With the economic growth and increasing requirement of indoor thermal comfort, the load of building sector presents a greater variability. This paper aims at analyzing the energy consumption characteristics and influencing factors of the residential heat pump system. Firstly, we selected residential households as investigated objective in Kitakyushu, Japan, and compared the energy saving performances of heat supply systems between heat pump and natural gas boiler. The results were based on real measured residential load during winter period, and calculated the cost saving performance of residential heat pump system compared with traditional natural gas boiler. We also did a survey of residential occupation behavior for the 12 selected residential customers. The result indicated that there was low relationship between power consumption and occupation hours, and the number of family members had a significant impact on the power consumption. The results indicate that residential heat pump system presented promising energy saving and cost reduction potential
Thermoelectric power generator integrated cookstove a sustainable approach of...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Cascaded Thermodynamic and Environmental Analyses of Energy Generation Modali...Ozyegin University
This study presents cascaded thermodynamic and environmental analyses of a high-performance academic building. Five different energy efficiency measures and operation scenarios are evaluated based on the actual measurements starting from the initial design concept. The study is to emphasize that by performing dynamical energy, exergy, exergoeconomic, and environmental analyses with increasing complexity, a better picture of building performance indicators can be obtained for both the building owners and users, helping them to decide on different investment strategies. As the first improvement, the original design is modified by the addition of a ground-air heat exchanger for pre-conditioning the incoming air to heat the ground floors. The installation of roof-top PV panels to use solar energy is considered as the third case, and the use of a trigeneration system as an energy source instead of traditional boiler systems is considered as the fourth case. The last case is the integration of all these three alternative energy modalities for the building. It is determined that the use of a trigeneration system provides a better outcome than the other scenarios for decreased energy demand, for cost reduction, and for the improved exergy efficiency and sustainability index values relative to the original baseline design scenario. Yet, an integrated approach combining all these energy generation modalities provide the best return of investment.
Thermoelectric power generator integrated cookstove a sustainable approach of...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Cascaded Thermodynamic and Environmental Analyses of Energy Generation Modali...Ozyegin University
This study presents cascaded thermodynamic and environmental analyses of a high-performance academic building. Five different energy efficiency measures and operation scenarios are evaluated based on the actual measurements starting from the initial design concept. The study is to emphasize that by performing dynamical energy, exergy, exergoeconomic, and environmental analyses with increasing complexity, a better picture of building performance indicators can be obtained for both the building owners and users, helping them to decide on different investment strategies. As the first improvement, the original design is modified by the addition of a ground-air heat exchanger for pre-conditioning the incoming air to heat the ground floors. The installation of roof-top PV panels to use solar energy is considered as the third case, and the use of a trigeneration system as an energy source instead of traditional boiler systems is considered as the fourth case. The last case is the integration of all these three alternative energy modalities for the building. It is determined that the use of a trigeneration system provides a better outcome than the other scenarios for decreased energy demand, for cost reduction, and for the improved exergy efficiency and sustainability index values relative to the original baseline design scenario. Yet, an integrated approach combining all these energy generation modalities provide the best return of investment.
Use of distributed electricity generation systems is currently increasing due to their economic and environmental benefits. Agricultural greenhouses require heat and electricity for covering their energy needs while their annual energy requirements vary significantly. Aim of the current work is the investigation of applying various distributed electricity generation systems in greenhouses. A review of different distributed generation systems currently used in various sectors as well as in greenhouses has been implemented. Various technologies are examined utilizing either renewable energies or fossil fuels in very efficient energy systems. Most of them are mature and cost-effective having lower environmental impacts compared with traditional centralized electricity generation technologies. Their use in greenhouses results in many benefits including the creation of an additional income for the farmer, reduction of carbon emissions into the atmosphere and increasing stability of the electric grid. It is suggested that distributed electricity generation systems should be used more in greenhouses when the necessary conditions are favorable.
Regression model for calculating the base load energy using the utility bills.Divyesh Kumar
The research aims to determine if the electricity consumption for the ST. Dana building at University of Michigan, Ann Arbor, can be calculated by using the utility bills and heating degree days for three different academic term. ANCOVA analysis, using R statistics, from the available utility bills and the monthly Heating degree day for past 3 years, showed that there are significant interaction between the heating degree days and the Winter and Fall academic-terms. However, the analysis failed to identify any interaction between the heating degree days and the summer term. Dana building’s base-load electricity consumption was calculated using the regression model for the winter term.
A theoretical analysis on the performance of (Bi2Te3-PbTe) hybrid thermoelectric generator (TEG) is presented in this paper. The effect of different performance parameters such as output voltage, output current, output power, maximum power output, open circuit voltage, Seebeck co-efficient, electrical resistance, thermal conductance, figure of merit, efficiency, heat absorbed and heat removed based on maximum conversion and power efficiency have been analyzed by varying the hot side temperature up to 350oC and by varying the cold side temperature from 30oC to 150oC. The results showed that a maximum power output of 21.7 W has been obtained with the use of one hybrid thermoelectric module for a temperature difference of 320oC between the hot and cold side of the thermoelectric generator at matched load resistance. The figure of merit was found to be around 1.28 which makes its usage possible in the intermediate temperature (250oC to 350oC) applications such as heating of Biomass waste, heat from Biomass cook stoves or waste heat recovery etc. It is also observed that the hybrid thermoelectric generator offers superior performance over 250oC of the hot side temperature, compared to standard Bi2Te3 modules.
This paper presents the comparison temperature of thermoelectric (Tec1-12708) between the series circuit and parallel circuit by adjusting of water flow rate pump and electrical supplying to thermoelectric, The electrical voltage at 8,10 and 12 V, water flow rate in reservoir was 0.015 kg/s and 0.025 kg/s. Experiments perform were 6 hours. The result from the researches, thermoelectric with parallel circuit high temperature more than thermoelectric with series circuit. The parallel circuit of thermoelectric can work better than the series circuit in hot side. The different temperature hot side of parallel circuit with the electrical voltage at 8, 10 and 12 V water flow rate in reservoir was 0.015 kg/s temperature average is 22.44 oC, 22.90 oC, 29.86 oC, and water flow rate in reservoir was 0.025 kg/s temperature average is 20.67 oC, 26.66 oC, 27.69 oC. Thermoelectric with parallel circuit makes the higher temperature more than thermoelectric with series circuit about 33%, 37%, 44% water flow rate in reservoir was 0.015 kg/s and 30%, 40%, 41% water flow rate in reservoir was 0.025 kg/s.
Overview on recent photovoltaic module cooling methods: advances PVT systems IJECEIAES
Renewable energy had been monopolized the research area in these past decade up till nowadays, due to its reliability and future in global production of electrical and thermal energy. Narrowing down the scope to the photovoltaic thermal (PVT) system, lots of improvements had been implied both theoretically and experimentally. One of the most attractive applications of PVT water or air-based collectors is building integrated photovoltaic thermal (BIPVT) system, which has undergone rapid developments in recent years. This review paper comprises the research findings on the improvements that had been integrated by PVT systems as well as well as personal and cited remarks on advancements on cooling techniques on PVT system.
Energy Audit and Analysis of an Institutional Building under Subtropical Clim...IJECEIAES
Evaluation and estimation of energy consumption are essential in order to classify the amount of energy used and the way it is utilized in building. Hence, the possibility of any energy savings potential and energy savings opportunities can be identified. The intention of this article is to study and evaluate energy usage pattern of the Central Queensland University campus’ buildings, Queensland, Australia. This article presents the field survey results from the audit of an office building and performance-related measurements of the indoor environmental parameters, for instance, indoor air temperature, humidity and energy consumption concerned to the indoor heating and cooling load. Monthly observed energy usage information was employed to investigate influence of the climate conditions on energy usage.
International Journal of Engineering Research and Development (IJERD)IJERD Editor
journal publishing, how to publish research paper, Call For research paper, international journal, publishing a paper, IJERD, journal of science and technology, how to get a research paper published, publishing a paper, publishing of journal, publishing of research paper, reserach and review articles, IJERD Journal, How to publish your research paper, publish research paper, open access engineering journal, Engineering journal, Mathemetics journal, Physics journal, Chemistry journal, Computer Engineering, Computer Science journal, how to submit your paper, peer reviw journal, indexed journal, reserach and review articles, engineering journal, www.ijerd.com, research journals,
yahoo journals, bing journals, International Journal of Engineering Research and Development, google journals, hard copy of journal
An Optimization Model for A Proposed Trigeneration System IJERA Editor
The combined cooling, heating, and power (CCHP) systems play an important role in the reduction of carbon emissions and the increase of energy efficiency for businesses and social organizations. Because of its potentials, tri-generation system has become a preference during the last decade. In this paper a hybrid trigeneration system is proposed for a university campus. The system is also important because it uses renewable energy sources as well as non-renewable energy sources. The objective of this paper is to propose an optimization model for this new Tri-generation system
This paper describes an experimental study of using the waste heat from a Panasonic Under-
Ceiling split room air - conditioner had a rated capacity of 3.51 kW (12,000 Btu/h). An under – ceiling
split type air conditioning for heating domestic water in private homes. Energy recovery improved the
performance, and the recovered energy could replace electricity completely for heating domestic water
use. An extra charge of refrigerant in the air-conditioner could prevent its compressor from over heating
during energy recovery. The experimental conducted on varies capacity of the range from 22.5 litres to
120 litres storage tank. Results show the water temperature increased lies in the range of 50 OC to 65
OC. It was found that, when the initial water temperature in the 22.5 litres storage tank 27 OC, the water
temperature reached 65 OC in 105 minutes. For 120 litres water, temperature increased from 27 OC to 62
OC,5 in 240 minutes.
Brownfield Sites as Catalysts for Sustainable Urban Regenerationand the Deman...IEREK Press
Almost two decades today, the topic of brownfields has extensively been researched in urban sociology, urban planning, and human geography, and numerous Western-Centric studies have linked the redevelopment of the abandoned, contaminated, vacant or derelict sites to sustainable urban regeneration and achieving smart cities and sustainability goals in general. Yet, until this day, the concept has received little academic and practical attention in Middle Eastern contexts. Western contexts on the other hand including Europe, UK and USA continue to offer unique perspectives on approaching brownfields in ways that reduce the alarming spatial cluttering and address socio-spatial disparities and spatial segregation in addition to achieving economic and environmental goals, and similar to the global scene, brownfield sites make a large portion of the post-industrial city of Amman, the capital of Jordan. However, with the lack of a systematic definition for the urban phenomenon objectives, methods to identifying potential brownfield sites and evaluating the prioritisation of their redevelopment that takes into consideration context particularities, and with the absence of participative approaches that include the local community in the decision-making regarding these spaces, city planners fail to include the increasingly growing number of brownfield site that proliferate their cities in the urban planning practice. Through the examination of literature discussions on objectives, approaches, classification systems, methodologies, assessment and evaluation tools for the support of design and prioritising decisions for brownfield regeneration indifferent contexts, and through looking at the numerous potential alternatives for brownfield sites regeneration these contexts highlight, this paper bids to emphasise the importance of developing context specific, localised tools tailored for the Middle Eastern case. Building on the above, this paper identifies five potential brownfield typologies in the context of Amman; (1)residual planning outcomes; (2) discontinued mines and quarries; (3) unfinished mega-projects; (4) contaminated and hazardous sites, and; (5) miscellaneous abandoned sites and buildings, and ends on the note that looking at the increasing demand to meeting smart growth and sustainability needs, these urban landscapes may function as catalysts for achieving comprehensive sustainable urban regeneration.
Natural Urban Heritage and Preservation Policies: the Case of Kyoto’s Waterways.IEREK Press
The value of natural heritage within urban areas is nowadays gaining recognition, but there are still no clear reference frameworks to confront the complexities of their management. In this discussion, the challenges of the association of historical preservation and urban nature are explored through the analysis of the management of Kyoto’s waterways. The conflicts caused by the rapid modernization of Japan at the end of 19thcentury find in Kyoto a remarkable expression in the tensions between renovation and conservation, providing a fertile frame for discussion. Relevant achievements and shortcomings of Kyoto ́s experience are here analyzed, considering how the preservation of historic landscapes affected the protection of urban rivers, the relationship between sustainability and heritage, and the new environmentally aware approaches to river improvement.
More Related Content
Similar to Load Shifting Assessment of Residential Heat Pump System in Japan
Use of distributed electricity generation systems is currently increasing due to their economic and environmental benefits. Agricultural greenhouses require heat and electricity for covering their energy needs while their annual energy requirements vary significantly. Aim of the current work is the investigation of applying various distributed electricity generation systems in greenhouses. A review of different distributed generation systems currently used in various sectors as well as in greenhouses has been implemented. Various technologies are examined utilizing either renewable energies or fossil fuels in very efficient energy systems. Most of them are mature and cost-effective having lower environmental impacts compared with traditional centralized electricity generation technologies. Their use in greenhouses results in many benefits including the creation of an additional income for the farmer, reduction of carbon emissions into the atmosphere and increasing stability of the electric grid. It is suggested that distributed electricity generation systems should be used more in greenhouses when the necessary conditions are favorable.
Regression model for calculating the base load energy using the utility bills.Divyesh Kumar
The research aims to determine if the electricity consumption for the ST. Dana building at University of Michigan, Ann Arbor, can be calculated by using the utility bills and heating degree days for three different academic term. ANCOVA analysis, using R statistics, from the available utility bills and the monthly Heating degree day for past 3 years, showed that there are significant interaction between the heating degree days and the Winter and Fall academic-terms. However, the analysis failed to identify any interaction between the heating degree days and the summer term. Dana building’s base-load electricity consumption was calculated using the regression model for the winter term.
A theoretical analysis on the performance of (Bi2Te3-PbTe) hybrid thermoelectric generator (TEG) is presented in this paper. The effect of different performance parameters such as output voltage, output current, output power, maximum power output, open circuit voltage, Seebeck co-efficient, electrical resistance, thermal conductance, figure of merit, efficiency, heat absorbed and heat removed based on maximum conversion and power efficiency have been analyzed by varying the hot side temperature up to 350oC and by varying the cold side temperature from 30oC to 150oC. The results showed that a maximum power output of 21.7 W has been obtained with the use of one hybrid thermoelectric module for a temperature difference of 320oC between the hot and cold side of the thermoelectric generator at matched load resistance. The figure of merit was found to be around 1.28 which makes its usage possible in the intermediate temperature (250oC to 350oC) applications such as heating of Biomass waste, heat from Biomass cook stoves or waste heat recovery etc. It is also observed that the hybrid thermoelectric generator offers superior performance over 250oC of the hot side temperature, compared to standard Bi2Te3 modules.
This paper presents the comparison temperature of thermoelectric (Tec1-12708) between the series circuit and parallel circuit by adjusting of water flow rate pump and electrical supplying to thermoelectric, The electrical voltage at 8,10 and 12 V, water flow rate in reservoir was 0.015 kg/s and 0.025 kg/s. Experiments perform were 6 hours. The result from the researches, thermoelectric with parallel circuit high temperature more than thermoelectric with series circuit. The parallel circuit of thermoelectric can work better than the series circuit in hot side. The different temperature hot side of parallel circuit with the electrical voltage at 8, 10 and 12 V water flow rate in reservoir was 0.015 kg/s temperature average is 22.44 oC, 22.90 oC, 29.86 oC, and water flow rate in reservoir was 0.025 kg/s temperature average is 20.67 oC, 26.66 oC, 27.69 oC. Thermoelectric with parallel circuit makes the higher temperature more than thermoelectric with series circuit about 33%, 37%, 44% water flow rate in reservoir was 0.015 kg/s and 30%, 40%, 41% water flow rate in reservoir was 0.025 kg/s.
Overview on recent photovoltaic module cooling methods: advances PVT systems IJECEIAES
Renewable energy had been monopolized the research area in these past decade up till nowadays, due to its reliability and future in global production of electrical and thermal energy. Narrowing down the scope to the photovoltaic thermal (PVT) system, lots of improvements had been implied both theoretically and experimentally. One of the most attractive applications of PVT water or air-based collectors is building integrated photovoltaic thermal (BIPVT) system, which has undergone rapid developments in recent years. This review paper comprises the research findings on the improvements that had been integrated by PVT systems as well as well as personal and cited remarks on advancements on cooling techniques on PVT system.
Energy Audit and Analysis of an Institutional Building under Subtropical Clim...IJECEIAES
Evaluation and estimation of energy consumption are essential in order to classify the amount of energy used and the way it is utilized in building. Hence, the possibility of any energy savings potential and energy savings opportunities can be identified. The intention of this article is to study and evaluate energy usage pattern of the Central Queensland University campus’ buildings, Queensland, Australia. This article presents the field survey results from the audit of an office building and performance-related measurements of the indoor environmental parameters, for instance, indoor air temperature, humidity and energy consumption concerned to the indoor heating and cooling load. Monthly observed energy usage information was employed to investigate influence of the climate conditions on energy usage.
International Journal of Engineering Research and Development (IJERD)IJERD Editor
journal publishing, how to publish research paper, Call For research paper, international journal, publishing a paper, IJERD, journal of science and technology, how to get a research paper published, publishing a paper, publishing of journal, publishing of research paper, reserach and review articles, IJERD Journal, How to publish your research paper, publish research paper, open access engineering journal, Engineering journal, Mathemetics journal, Physics journal, Chemistry journal, Computer Engineering, Computer Science journal, how to submit your paper, peer reviw journal, indexed journal, reserach and review articles, engineering journal, www.ijerd.com, research journals,
yahoo journals, bing journals, International Journal of Engineering Research and Development, google journals, hard copy of journal
An Optimization Model for A Proposed Trigeneration System IJERA Editor
The combined cooling, heating, and power (CCHP) systems play an important role in the reduction of carbon emissions and the increase of energy efficiency for businesses and social organizations. Because of its potentials, tri-generation system has become a preference during the last decade. In this paper a hybrid trigeneration system is proposed for a university campus. The system is also important because it uses renewable energy sources as well as non-renewable energy sources. The objective of this paper is to propose an optimization model for this new Tri-generation system
This paper describes an experimental study of using the waste heat from a Panasonic Under-
Ceiling split room air - conditioner had a rated capacity of 3.51 kW (12,000 Btu/h). An under – ceiling
split type air conditioning for heating domestic water in private homes. Energy recovery improved the
performance, and the recovered energy could replace electricity completely for heating domestic water
use. An extra charge of refrigerant in the air-conditioner could prevent its compressor from over heating
during energy recovery. The experimental conducted on varies capacity of the range from 22.5 litres to
120 litres storage tank. Results show the water temperature increased lies in the range of 50 OC to 65
OC. It was found that, when the initial water temperature in the 22.5 litres storage tank 27 OC, the water
temperature reached 65 OC in 105 minutes. For 120 litres water, temperature increased from 27 OC to 62
OC,5 in 240 minutes.
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Brownfield Sites as Catalysts for Sustainable Urban Regenerationand the Deman...IEREK Press
Almost two decades today, the topic of brownfields has extensively been researched in urban sociology, urban planning, and human geography, and numerous Western-Centric studies have linked the redevelopment of the abandoned, contaminated, vacant or derelict sites to sustainable urban regeneration and achieving smart cities and sustainability goals in general. Yet, until this day, the concept has received little academic and practical attention in Middle Eastern contexts. Western contexts on the other hand including Europe, UK and USA continue to offer unique perspectives on approaching brownfields in ways that reduce the alarming spatial cluttering and address socio-spatial disparities and spatial segregation in addition to achieving economic and environmental goals, and similar to the global scene, brownfield sites make a large portion of the post-industrial city of Amman, the capital of Jordan. However, with the lack of a systematic definition for the urban phenomenon objectives, methods to identifying potential brownfield sites and evaluating the prioritisation of their redevelopment that takes into consideration context particularities, and with the absence of participative approaches that include the local community in the decision-making regarding these spaces, city planners fail to include the increasingly growing number of brownfield site that proliferate their cities in the urban planning practice. Through the examination of literature discussions on objectives, approaches, classification systems, methodologies, assessment and evaluation tools for the support of design and prioritising decisions for brownfield regeneration indifferent contexts, and through looking at the numerous potential alternatives for brownfield sites regeneration these contexts highlight, this paper bids to emphasise the importance of developing context specific, localised tools tailored for the Middle Eastern case. Building on the above, this paper identifies five potential brownfield typologies in the context of Amman; (1)residual planning outcomes; (2) discontinued mines and quarries; (3) unfinished mega-projects; (4) contaminated and hazardous sites, and; (5) miscellaneous abandoned sites and buildings, and ends on the note that looking at the increasing demand to meeting smart growth and sustainability needs, these urban landscapes may function as catalysts for achieving comprehensive sustainable urban regeneration.
Natural Urban Heritage and Preservation Policies: the Case of Kyoto’s Waterways.IEREK Press
The value of natural heritage within urban areas is nowadays gaining recognition, but there are still no clear reference frameworks to confront the complexities of their management. In this discussion, the challenges of the association of historical preservation and urban nature are explored through the analysis of the management of Kyoto’s waterways. The conflicts caused by the rapid modernization of Japan at the end of 19thcentury find in Kyoto a remarkable expression in the tensions between renovation and conservation, providing a fertile frame for discussion. Relevant achievements and shortcomings of Kyoto ́s experience are here analyzed, considering how the preservation of historic landscapes affected the protection of urban rivers, the relationship between sustainability and heritage, and the new environmentally aware approaches to river improvement.
Urban Public Space Axis Rector of Green Infrastructure in the Current City of...IEREK Press
The current city calls for the reconsideration of a close relationship between gray infrastructure and public spaces, understanding the infrastructure as a set of items, equipment, or services required for the functioning of a country, a City. Ambato, Ecuador, is a current intermediate city, has less than 1% of the urban surface with use of public green spaces, which represents a figure below the 9m2/ hab., recommended by OMS. The aim of this paper was to identify urban public spaces that switches of green infrastructure in the city today, applying a methodology of qualitative studies. With an exploratory descriptive level analysis, in three stages, stage of theoretical foundation product of a review of the existing literature, which is the theoretical support of the relationship gray infrastructure public spaces equal to green infrastructure. Subsequent to this case study, discussed with criteria aimed at green infrastructure and in the public spaces of the study area. Finally, after processing and analysis of the results, we provide conclusions for urban public space as a definition of the green infrastructure of the current city of Latin America; in the latter, the focus is to support this article.
Revitalization Strategy for Historic Core of AhmedabadIEREK Press
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Unlocking the Potentials of Urban Architecture in Enhancing theQuality of Urb...IEREK Press
Currently more than half of world population are living in cities, while world is witnessing a rapid urbanization process particularly in cities of the developing and emerging countries, where urban poverty areas (UPA) with low quality of urban life (QUL) and lack of the usual urban spaces are the most significant urban phenomena that characterized those cities. In such an urban context there is a need for an efficient tool that contributes positively to the enhancement of the QUL, meanwhile to provide the best use of the rare vacant lands. This study argues that urban architecture as a design field offers a distinctive approach to a special type of buildings made for an urban setting, thus it can enhance the QUL in UPA through community projects. The study is based on an analytical study of selected cases of community projects in UPA that represents examples of how urban architecture through its potentials has a positive impact on its urban context, notably through community projects that strongly linked to real community needs. The results showed that urban architecture as a design approach for community projects have multiple roles that boost the socio-economic daily life, as well it supports various environmental issues towards better QUL.
The Sinkhole Occurrence Risk Mitigation in Urban Areas for the Historic Salt ...IEREK Press
The present research focuses on the definition of a novel methodology for sinkhole risk assessment above shallow salt mines. The research were carried out on the area above the Wieliczka salt mine, a World Heritage site. The study of vertical stresses on the basis of a theoretical state of rock mass deformation in the area of test chambers was performed. Furthermore, the risk of chamber collapse due to ventricular stress exceeding the limit specified in the zone were calculated based on the arch pressure theory. The final stage of the research consists of spatial analysis that leading to the identification of chambers potentially influenced by other risk factors. The research shown in the article strongly suggests that combined spatial analysis with geotechnical analysis may lead to reliable sinkhole risk assessment methodology.
In Search of a Tool to Support Planning Inside Large Cities: the SustaIn-LED ...IEREK Press
The aim of the present study is to investigate the linkages between local economic development, innovation, and environmental sustainability inside urban areas. Can innovation affect the improvement of the quality of life inside urban areas? This research question comes from the consideration that usually innovation and growth in general are considered sources of conflict in affecting the livability of large cities. The objective of the paper is to design a model — the “SustaIn-Led” - to connect levels of environmental sustainability, quality of life, and economic development inside metropolitan areas, taking into account also innovation processes, activated by the innovation policies and by the knowledge economy. The study takes in consideration the 53 largest United States metropolitan areas with a population over 1 million, with a time series from the years 2000 through 2015.This has been done because of a two-fold reason: (1) the US among high-income countries is the one with the highest number of universities, patents, and citations; (2) several studies have shown that innovation occurs in large cities. The first part of the present study has carried out the identification of the variables to represent and significantly explain the phenomena – local economic development, innovation, and environmental sustainability – linked to the design of the SustaIn-LED model. Environmental sustainability in urban areas in this paper is represented by means of the Air Quality Index (AQI),while the number of workers synthetically quantifies local economic development. Correlation and multiple regression analyses are conducted in order to examine the relationship between the three main indicators. The multiple regressions for the year 2015 produced a low p-value, indicating that the predictors are significant in the regression analysis. Similar results of p-value are shown in all the years from 2000 to 2013. For 2015, the results showed that part of the variance in the measure of total workers of the metropolitan areas could be predicted by measures of innovation and air quality. Higher R2values have been registered for the years from 2000 through2013.The development of the SustaIn-LED model could be utilized in urban regeneration processes to help in the design of new urban planning policies inside large cities by means of a better comprehension of environmental and economic implications caused by the implementation of innovation policies.
Estimation of Coating Materials Contribution to the TVOCsEmissions of Wood Fl...IEREK Press
Based on the increasing concern about the exposure to volatile organic compounds (VOCs) from indoor finishing materials, industrial companies are called to meet the growing demand for more sustainable products. Recently, most designers and consumers have more environmental considerations while selecting the finishing materials. These considerations are related to the VOCs content of the finishing material itself regardless of its coating layers. Nowadays, interior wood coatings are commonly applied to large surfaces (ceilings, walls, floors) and many types of furnishing, leading to a high loading factor (surface-to-volume ratio). These coatings might contribute significantly to the VOCs emissions due to repeatedly and periodically use during maintenance, remodeling, and renovation of interior spaces. The aim of this study is to estimate the wood coating materials contribution to the TVOCs emissions of wood product in the indoor environment to shed light on the importance of comprehensive analysis of wood material with all treatment coatings. So, a small interior space with controlled temperature, relative humidity, and air exchange rate was simulated using IA-Quest program to investigate the influence of three wood coating materials; stain, wax, and varnish which were applied to an area of natural hardwood Oak floor. The TVOCs emission data resulted from the different coated wood floor was compared with VOCs emissions caused by the natural wood floor to find out the coating material contribution in TVOCs emissions of a wood flooring material
Sustainable Park Landscaping as an Approach for theDevelopment of the Built E...IEREK Press
Implementing sustainable principles when landscaping parks is vital for the development of the built environment, and should take into account environmental, social, economic, and cultural aspects, in order to eliminate conflict between developmental requirements, and the need to preserve cultural and natural resources. This paper reviews the guidelines that should be considered for current and future sustainable parks in regions with a moderate climate, in order to ensure that they incorporate ecotourism, cost effective operation and maintenance, a clean environment, the promotion of renewable energy, and resource preservation. A number of parks, located in moderate climate zones, are studied in terms of aspects such as their location, topography, operation, and landscaping characteristics, to demonstrate the prevailing normative values that can be applied to sustainable park design. Prince Meshari Park, in Al-Baha city, Saudi Arabia, is employed as a case study for applying all of the guidelines proposed in this investigation, and to highlight some of their merits and limitations in terms of the current situation of the park.
A Model Proposed for the Prediction of Future Sustainable Residence Specifica...IEREK Press
In Egypt, people are unable to determine the qualities of appropriate residence that achieves quality and occupant satisfaction, and contributes to sustainability of residential conglomerations. In general, developing countries lack housing information which can be used to enhance quality of residence. Also, the methods of assessing and identifying the appropriate criteria for future residence quality remain traditional ones that cannot address the multiple, conflicting, overlapping aspects to reach a good decision. This calls for using the Analytical Network Process (ANP), an effective tool for specifying the relative importance of all factors impacting a specific issue for making an appropriate residential decision. In addition, this method provides results for the decision element impacts network within the decision structure; thus contributing to more understanding of the mechanisms and requirements of residence selection. The proposed decision structure comprises a two-level network: main clusters, main elements, and sub-elements included in the demographic characteristics group, the residence criteria group, the demand parameters group, the supply parameters group, the residence specifications group, and the alternatives group which representing, in total, the decision and specifying the percentage needed for each housing level. Results of the model showed complete capacity in smoothly addressing complexities and overlapping in the decision structure. The decision structure showed that 52% chose luxury residence, 28% chose middle-class residence, and 19.5% chose the economic residence. Mechanisms of decision making were analyzed; particularly in terms of relationship to demographic characteristics and residence specifications. Also, the importance and impact of demand / supply parameters in reaching decision were analyzed
Development of an Open-Source Water Consumption Meter for HousingIEREK Press
This article reports on the project "Design and development of water and gas P.L. measurement devices in the housing: an approach to sustainable consumption in Mexico", prepared at the Metropolitan Autonomous University in the Department of the Environment, whose objective was to develop a device to measure water consumption in the housing, which allows users to know their spending and can make decisions in favor of efficiency through the reduction of water use in household activities. The meter is made up of open source, programmable or reconfigurable software, which receives the signal from a water flow sensor and a casing designed to contain the hardware and facilitate the user's installation. Both the hardware and the casing can be purchased, downloaded, manufactured and assembled at home (Do It Yourself). As specific results were obtained: hardware programming and housing design and as a final result: the assembly of the functional prototype with which measurements of water consumption were made in a housing in Mexico. With this work we conclude that through the development of new accessible and common measurement technologies for the users of a house, it will be possible to promote efficiency in the use of natural resources in cities, increasing availability and promoting a more sustainable urban development.
Multi-Scale Assessment of Urban Gardens as Constructed Habitats for Biodivers...IEREK Press
Biodiversity in arid urban environments depends upon habitat formation that balances both bioclimatic and biophysical environment needs. There is the potential for urban gardens to establish symbiotic ecosystem services from microhabitat formation that collectively form an assemblage of ecological patches to connect a diverse range of flora and fauna, and establish community driven nursery and seed collection initiatives. This study of urban garden habitats situated within a new urban district of Jeddah Saudi. The analysis concentrates on the ability of garden spatial formations to construct a heterogeneous spatial morphology of sub-patch within the larger urban landscape patch. Patch and subpatch formations are examined based on the criteria of (I) assemblage of the spatial habitat (characterized by shape and spatial organization); (II) integration of spatial, functional and vegetation plantation patterns; (III) connectivity. Findings reveal that garden layout is structured by the integration and layering of plant types to generate cool understory habitat with seedling establishment, and water conservation. Designed layout of the garden as a spatial pattern is augmented with a range of microclimate mediators to dim solar exposure within the plantation habitat. A strong heterogeneity in plant formations and combinations is seen to dominant the garden formations.
Architectural Education for Sustainable Urban RegenerationIEREK Press
Urban regeneration is one of the important agendas of Turkey as a developing country. Rapid urbanization problems have been causing vital social and economic problems together with physical and spatial ones especially in big cities of Turkey. Thus, national and local governments handled urban regeneration as a practical method for solution of these problems. However, they unfortunately don’t implement urban regeneration according to its real requirements. Instead, this multi-dimensional and complex process is seen as a pull down and built up operation. Considering this situation and being in awareness of the responsibilities of architects throughout urban regeneration process, the authors think that urban regeneration should be discussed in the scope of architectural education. This paper presents the purpose, the process and the products of an undergraduate architectural design studio that was undertaken at Bursa Uludağ University, Faculty of Architecture. The architectural and urban design projects of the students of which aim was to offer a livable and sustainable mixed used living environments are discussed together with their conceptual backgrounds. Putting stress on the differences between theory and practice, the conclusion introduces a critical evaluation of urban regeneration and sustainable housing concepts in Turkey.
Typology and Solar Gain Analysis: Vernacular Courtyard Houses of Tabriz, IranIEREK Press
The study presents the results of typological analysis and simulation modeling analysis of traditional courtyard residential houses in the cold semi-arid climate of Iran. The purpose of the research has been to analyze and evaluate traditional passive environmental strategies and their elements to provide implications for the design of sustainable residential buildings in contemporary time. Five existing traditional courtyard houses in the city of Tabriz, Iran, are used as case-studies to analyze the typology and the solar zoning conditions and to develop simulation models. The Ecotect simulation program is used to calculate the solar gains of the buildings and to analyze the effectiveness of the natural passive systems along with native design strategies in terms of potential solar gains of main and secondary living spaces. However, in the vernacular, not only the awareness of the climatic and topological considerations is important, but also the values, rituals, and beliefs that shape the design of the dwellings need to be considered. The research is based on the hypothesis that vernacular buildings (courtyard houses) of Iran have been environmentally sustainable structures. However, an important challenge of the study has been to avoid the technological bias and to consider the cultural and social aspects and embodiment of the studied houses, as well. The study also addresses the potential short comings that limit the reliability of Iranian vernacular architecture at present in order to arrive at a more holistic understanding of the sustainability of the vernacular architecture in the country.
Lessons Learned from the First Passivhaus Building in QatarIEREK Press
Energy efficient models have become the path to reduce energy consumption and Greenhouse gas emissions in the built environment in many developed countries. According to the Energy Performance of Buildings Directive (EPBD), new buildings constructed within the European Union (EU) countries are expected to be nearly zero energy buildings (nZEBs) by 2020, while new public buildings are expected to adhere to this target by 2018. The Passivhaus approach has been identified by several researchers as a possible roadmap to achieve nZEBs. The meticulous engineering and high standards of the Passivhaus building fabric, in addition to the high comfort levels, are the main reasons behind the success and widespread of the standard. Recently, in 2013 the Passivhaus principles have been applied to an experimental residential project in the hot and arid climate of Qatar. The project is composed of two identical buildings, one built according to the Passivhaus standard and the other according to normal practices in the country. The thermal performance and comfort levels of both buildings were assessed through dynamic simulation and on-site measurements. Results indicated that at least 50% reduction in annual operational energy, water consumption, and CO2 emissions were achieved in the Passivhaus model in comparison to the standard model. This paper aims to highlight the lessons learned through the Passivhaus project; first by exhibiting the Passivhaus criteria that have been met, second by showcasing the outcomes of the project, and third by displaying the barriers and difficulties that have been associated with building according to the standard in Qatar. Finally, recommendations and general guidelines are suggested towards a possible adoption of the Passivhaus standard in Qatar and the Gulf Cooperation Council (GCC) countries
Optimal Sizing and Design of Isolated Micro-Grid systemsIEREK Press
Micro-grid and standalone schemes are emerging as a viable mixed source of electricity due to interconnected costly central power plants and associated faults as well as brownouts and blackouts in additions to costly fuels. Micro-Grid (MG) is gaining very importance to avoid or decrease these problems. The objective of this paper is to design an optimal sizing and energy management scheme of an isolated MG. The MG is suggested to supply load located in El-shorouk Academy, Egypt between 30.119 latitudes and 31.605 longitudes. The components of the MG are selected and designed for achieving minimum Total Investment Cost (TIC) with CO2 emissions limitations. This is accomplished by a search and optimization MATLAB code used with Particle Swarm Optimization (PSO) and Genetic Algorithm (GA) techniques. The use of Diesel Generators (DGs) is minimized by limiting the gaseous CO2 emissions as per targeted allowable amount. A comparison is accomplished for investigating the CO2 emissions constraints effects on the TIC in $/year and annual cost of energy in $/kWh. The obtained results verified and demonstrated that the designed MG configuration scheme is able to feed the energy entailed by the suggested load cost effectively and environmental friendly.
Regenerative Mobility: Disruption and Urban EvolutionIEREK Press
Mobility plays an important role in the cities by enabling people to carry out the most varied activities across the territory, as well as to ensure the city fully function. In addition, analogies to the human organism can be made by this urban dynamic, looking for solutions to specific issues. Moreover, this paper has been based by the premise that phenomena and urban elements could be conceptualized, explained and transformed from contemporary and innovative approaches applied in the medical field. For this reason, this paper aims to develop and present a new concept associated with urban mobility, based on the principles of regenerative medicine: the Regenerative Mobility, a concept with disruptive and evolutionary purposes. Furthermore, the structure of this paper is summarized by the introduction which contextualizes the theme, presents and characterizes the techniques used in the research. Additionally, the following chapters explore essential aspects of the city, explaining why it needs a mobility change and new concepts. Therefore, the concept of Regenerative Mobility is presented as a potential of mobility and cities improvement, followed by pragmatic cases, capable of illustrating some of its principles.
Unlocking the Potentials of Urban Architecture in Enhancing the Quality of Ur...IEREK Press
Currently more than half of world population are living in cities, while world is witnessing a rapid urbanization process particularly in cities of the developing and emerging countries, where urban poverty areas (UPA) with low quality of urban life (QUL) and lack of the usual urban spaces are the most significant urban phenomena that characterized those cities. In such an urban context there is a need for an efficient tool that contributes positively to the enhancement of the QUL, meanwhile to provide the best use of the rare vacant lands. This study argues that urban architecture as a design field offers a distinctive approach to a special type of buildings made for an urban setting, thus it can enhance the QUL in UPA through community projects. The study is based on an analytical study of selected cases of community projects in UPA that represents examples of how urban architecture through its potentials has a positive impact on its urban context, notably through community projects that strongly linked to real community needs. The results showed that urban architecture as a design approach for community projects have multiple roles that boost the socio-economic daily life, as well it supports various environmental issues towards better QUL.
Urban Public Space Axis Rector of Green Infrastructure in the Current City of...IEREK Press
The current city calls for the reconsideration of a close relationship between gray infrastructure and public spaces, understanding the infrastructure as a set of items, equipment, or services required for the functioning of a country, a City. Ambato, Ecuador, is a current intermediate city, has less than 1% of the urban surface with use of public green spaces, which represents a figure below the 9m2/ hab., recommended by OMS. The aim of this paper was to identify urban public spaces that switches of green infrastructure in the city today, applying a methodology of qualitative studies. With an exploratory descriptive level analysis, in three stages, stage of theoretical foundation product of a review of the existing literature, which is the theoretical support of the relationship gray infrastructure public spaces equal to green infrastructure. Subsequent to this case study, discussed with criteria aimed at green infrastructure and in the public spaces of the study area. Finally, after processing and analysis of the results, we provide conclusions for urban public space as a definition of the green infrastructure of the current city of Latin America; in the latter, the focus is to support this article.
The Sinkhole Occurrence Risk Mitigation in Urban Areas for the Historic Salt ...IEREK Press
The present research focuses on the definition of a novel methodology for sinkhole risk assessment above shallow salt mines. The research were carried out on the area above the Wieliczka salt mine, a World Heritage site. The study of vertical stresses on the basis of a theoretical state of rock mass deformation in the area of test chambers was performed. Furthermore, the risk of chamber collapse due to ventricular stress exceeding the limit specified in the zone were calculated based on the arch pressure theory. The final stage of the research consists of spatial analysis that leading to the identification of chambers potentially influenced by other risk factors. The research shown in the article strongly suggests that combined spatial analysis with geotechnical analysis may lead to reliable sinkhole risk assessment methodology.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
2. Zhao / Environmental Science and Suctainable Development
pg. 102
heat pump represents the most thermo-economically efficient system in terms of the aver final costs for heat production
(Poredoš, Kitanovski & Poredoš, 2017). Viorel Popa implemented an air to water heat pump in Galati city to calculated
medium value of the coefficient of performance of the heat pump system. Comparing with other heating system, heat
pump system has low operating and maintenance costs and shows promosing environmental performance (Popa, Ion
& Popa, 2016).
Research on residential heat pump systems is analyzed based on the energy market in Japan. This research is composed
as follow. Section 1 based on the measured data, we analyze the economic benefits of residential heat pump systems,
according to the factors such as temperature, coefficient of performance and the distribution of residential electricity
consumption. Section 2 introduces the objective and data resource. Section 3 presents the method. Section 4 does a
detail analysis that consider the energy saving and economic performance, and the occupation impact. In the last
section, the conclusion is provided.
2. Objective and data resource
According to the data book from Kyuden Electrical Company (Kyuden Electrical Company, n.d.), it can be seen that
the Kyushu area is presenting a full electrification trend. All electrified housing number in Kyushu area has increased
twice from 2008 to 2017. According to (Zhang, Qin, & Wang, 2015), numerous heat pump water heaters have been
developed for the residential sector, alongside the promotion of all-electrification households over recent years.
Energy for hot water accounts for about 30% of total residential energy consumption in Japan. As evidenced in many
empirical studies, the energy consumption of each household was statistically investigated for different outdoor
temperatures, family composition, house time and economic conditions. In addition, load flexibility is closely related
to the load consumption patterns of different customers. As shown in Figure. 1, this research selected 12 households
located in Higashida District, northern part of Kyushu Island, Japan. Analyzing their residential electricity usage
during weekly period in winter in 2017. This section analyzed the time series power consumption by each appliance
at 1-hour interval, compares the residential energy consumption after the application of heat pump system,
Figure. 2 presents the detail structure of residential heat pump system. Customers can use electricity from power grid,
evaporator absorbs the heat form air, and transfer it to the thermal storage system. And the stored energy in the tank
will be used later in the residential house. We also did a survey of family members' basic information for the 12
selected customers, the survey can be seen in Table 1.
Figure 1. Location of Higashida region in Japan.
3. Zhao / Environmental Science and Suctainable Development
pg. 103
Power Grid
Demand Side
Thermal Storage
Evaporator
Compressor
Expansion valve
Condenser
Heat from Air Heating Supply
Tank
Boiler
City Gas
Figure 2. Structure of residential household with heat pump water heater system.
Table 1. Basic information of customers
Room number Family member
Occupation
hours(weekday)(h)
Occupation
hours(Saturday)(h)
Occupation
hours(Sunday)(h)
I101 3 42 60 72
I111 4 65 82 88
I205 5 70 93 70
I210 4 68 79 67
I409 4 56 60 68
I410 3 48 48 42
I411 5 81 94 97
I1001 4 60 79 79
I1101 4 62 75 89
II308 2 36 43 44
II411 3 33 38 48
II804 4 63 92 80
3. Methodology
The performance of COP is strongly dependent on changes of outdoor temperature. The daily heat consumption of
the house also changes. There is an uncertainty in the cost savings, and the application of heat pump system provides
a cost saving chance. We compare the performance between heat pump systems and traditional methods of extracting
heat from natural gas.
The power consumption of heat pump Ehp (kWh) can be calculated as follow:
re
hp
hp
Q
E
COP
= (1)
4. Zhao / Environmental Science and Suctainable Development
pg. 104
The equivalent consumption of natural gas VGas (m³) can be calculated as follow:
re
Gas
LHV
Q
V = (2)
The fuel cost of natural gas CGas (Yen) can be calculated as follow:
Gas Gas Gas
C V Price
= (3)
The power cost of heat pump Cre (Yen) can be calculated as follow:
re Electric
re
Q
C Price
= (4)
The cost saving Puser (Yen) can be calculated as follow:
user Gas re
C C
P = − (5)
Where, Qre refers to the heating consumption of residential house (kJ), COPhp refers the COP of heat pump, LHV is
the heating value of city gas (kJ/m³), PriceGas is the price of natural gas, and PriceElectric refers to the electricity price.
4. Result and discussion
4.1. Energy saving performance
Selecting one household to analyze the power consumption of Eco-cute. As we all know the power consumption of
Eco-cute has a close relationship with outdoor temperature.As we can see in Figure. 3, when the outdoor temperature
increase the power consumption of Eco-cute is shown a decreasing trend. Taking one household as an example, when
the outdoor temperature dropped from 6 degrees Celsius to minus 2 degrees Celsius, the hourly power consumption
increased by 14%. In the following, we will calculate thermal load in different value of COP.
Figure 3. Power consumption of Eco-cute under different out temperature.
Base on he measured data, we analyze the power consumption of Eco-cute between the different customers. As we
can see in figure. 4, the power consumption of Eco-cute of each building shows a peak of usage is presented before 0
to 8 o'clock, and the peak is reached during 3 and 4 o'clock.
5. Zhao / Environmental Science and Suctainable Development
pg. 105
Figure 4. Comparison of power consumption of Eco-cute between the different customers.
4.2. Economic performance
We do an economic performance by comparing performance between Eco-cute and natural gas boiler. The cost of the
Eco-cute and natural gas boiler for the same amount thermal load is calculated. As shown in the figure. 5, ranging the
value of COP from 2.5 to 3.5, it shows that the cost saving is obvious at higher COP value.
6. Zhao / Environmental Science and Suctainable Development
pg. 106
Figure 5. Cost saving by using Eco-cute under the different value of COP.
We also calculate the cost savings performance among customers. As shown in the figure. 6, we fix the performance
of COP at 3.5, the cost savings can reach up to 5000Yenand the lowest is around 2500Yen. It indicates that Eco-cute
is shown an economic advantage.
Figure 6. Cost savings performance among customers.
4.3. Occupation impact
As we all know, occupation has an impact on the load consumption. The survey result shows that the number of family
members of the selected households ranges from 2, 3, 4, and 5 people, we calculated the power consumption of Eco-
cute for these customers, respectively. The relationship between the number of family members and power
consumption of Eco-cute is shown in figure. 7. The result present that the power consumption is in linear relationship
with the number of family members. The impact of occupation hours on the total power and Eco-cute consumption
are shown in figure. 8.
Based on figure. 8, it indicates that the number of family members has significant impact on the power consumption
of Eco-cute.
7. Zhao / Environmental Science and Suctainable Development
pg. 107
Figure 7. Relationship between power consumption of Eco-cute and number of family members.
Figure 8. The impact of indoor hour on the Eco-cute consumption.
5. Conclusion
This study utilized the monitored history data to analyze the energy consumption characteristics and influencing
factors of the residential customers, which equiped with heat pump heat supply system in Kitakyushu, Japan.
Considering that load flexibility is closely related to the load consumption patterns of different customers. We selected
12 households located in Higashida district to analyzed their residential electricity usage, the daily demand curves and
load consumption pattern of heat pump system were investigated in detail.
The characteristics of energy saving performance indicate that power consumption of Eco-cute shown a decreasing
trend with increasing outdoor temperature. According to the economic performance comparison between Eco-cute
and natural gas boiler, the result shown that Eco-cute exhibited an economic advantage, and the cost saving by using
Eco-cute was obvious at higher COP value. As for the impact of occupation on the load consumption, we did a survey
of family members' indoor hour for the 12 selected customers, the result show that there was a low correlation between
power consumption and indoor hour, and the number of family members had a significant impact on the power
consumption.
8. Zhao / Environmental Science and Suctainable Development
pg. 108
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air-to-water heat pump. International Journal of Refrigeration, 76, 19-28.
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