This document describes the concept and realization of an EIB (European Installation Bus)-based automated room climate control system. Sensors measure 36 parameters like temperature, humidity, and CO2 levels in two test rooms. Heating, ventilation, and electricity usage are also monitored. The data is transmitted via EIB to a processing unit and stored in a database. The system aims to provide optimal thermal comfort while reducing energy consumption through decentralized, automated control of each room based on physical models of thermal processes and disturbances like solar gains and user behavior. Extensive testing showed the system is reliable and applicable for residential building climate control.
Sustainable design for building envelope in hot climates; a case study for t...IJAEMSJORNAL
Architectural design is influenced by the actual thermal behaviour of building components, and this in turn depends not only on their steady and periodic thermal characteristics, but also on exposure effects, orientation, surface colour, and climatic fluctuations at the given location. Design data and environmental parameters should be produced in an accurate way for specified locations, so that architects and engineers can confidently apply them in their design calculations that enable precise evaluation of the influence of various parameters relating to each component of the envelope, which indicates overall thermal performance of building. The present paper will be carried out with an objective of thermal behaviour assessment and characteristics of the opaque and transparent parts of one of the very unique components used as a symbolic distinguished element of building envelope, its thermal behaviour under the impact of solar temperatures, and its role in heat exchange related to a specific U-value of specified construction materials alternatives. The research method will consider the specified Hot-Dry weather and new mosque in Baghdad, Iraq as a case study. Also, data will be presented in light of the criteria of indoor thermal comfort in terms of design parameters and thermal assessment for a“model dome”. Design alternatives and considerations of energy conservation, will be discussed as well using comparative computer simulations. Findings will be incorporated to outline the conclusions clarifying the important role of the dome in heat exchange of the whole building envelope for approaching an indoor thermal comfort level and further research in the future.
To design any air-conditioning unit, estimation of heating or cooling load is very important. It helps us in design different devices most importantly the humidifier (in case of winter) or de-humidifier (in case of summer).
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.
Sustainable design for building envelope in hot climates; a case study for t...IJAEMSJORNAL
Architectural design is influenced by the actual thermal behaviour of building components, and this in turn depends not only on their steady and periodic thermal characteristics, but also on exposure effects, orientation, surface colour, and climatic fluctuations at the given location. Design data and environmental parameters should be produced in an accurate way for specified locations, so that architects and engineers can confidently apply them in their design calculations that enable precise evaluation of the influence of various parameters relating to each component of the envelope, which indicates overall thermal performance of building. The present paper will be carried out with an objective of thermal behaviour assessment and characteristics of the opaque and transparent parts of one of the very unique components used as a symbolic distinguished element of building envelope, its thermal behaviour under the impact of solar temperatures, and its role in heat exchange related to a specific U-value of specified construction materials alternatives. The research method will consider the specified Hot-Dry weather and new mosque in Baghdad, Iraq as a case study. Also, data will be presented in light of the criteria of indoor thermal comfort in terms of design parameters and thermal assessment for a“model dome”. Design alternatives and considerations of energy conservation, will be discussed as well using comparative computer simulations. Findings will be incorporated to outline the conclusions clarifying the important role of the dome in heat exchange of the whole building envelope for approaching an indoor thermal comfort level and further research in the future.
To design any air-conditioning unit, estimation of heating or cooling load is very important. It helps us in design different devices most importantly the humidifier (in case of winter) or de-humidifier (in case of summer).
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.
Design of Heat Exchanger Network for VCM Distillation Unit Using Pinch Techno...IJERA Editor
In process industries, heat exchanger networks represent an important part of the plant structure. The purpose of the networks is to maximize heat recovery, thereby lowering the overall plant costs. In process industries, during operation of any heat exchanger network (HEN), the major aim is to focus on the best performance of the network As in present condition of fuel crises is one of the major problem faced by many country & industrial utility is majorly depend on this. There is technique called process integration which is used for integrate heat within loop so optimize the given process and minimize the heating load and cooling load .In the present study of heat integration on VCM (vinyl chloride monomer) distillation unit, Heat exchanger network (HEN) is designed by using Aspen energy analyzer V8.0 software. This software implements a methodology for HEN synthesis with the use of pinch technology. Several heat integration networks are designed with different ΔT min and total annualized cost compared to obtain the optimal design. The network with a ΔT min of 90C is the most optimal where the largest energy savings are obtained with the appropriate use of utilities (Save 15.3764% for hot utilities and 47.52% for cold utilities compared with the current plant configuration). Percentage reduction in total operating cost is 18.333%. From calculation Payback Period for new design is 3.15 year. This save could be done through a plant revamp, with the addition of two heat exchangers. This improvement are done in the process associated with this technique are not due to the use of advance unit operation, but to the generation of heat integration scheme. The Pinch Design Method can be employed to give good designs in rapid time and with minimum data.
Air Water System Design using Revit Mep for a Residential Buildingijtsrd
In this project we discussed the study and performance of air conditioner, air refrigeration and water conditioner system in a single unit. The main objective of this project is to develop the multifunctional system which can provide refrigeration effect, cold water and air conditioning effect with in regular air or space conditioning system. Air and water systems conditioning spaces by distributing the both conditioned air and water to the terminal units installed in the spaces for which the basic plan is given by civil department and the basic design is done by using REVIT MEP software. The air and water are heated or cooled in a central mechanical equipment room. The air supplied is termed as primary air to distinguish it from the recirculated or secondary room air. By using the peak cooling load values obtained in the heating and cooling load calculations the ton of refrigeration values for individual and total area is calculated which will be helpful for selection of accurate design for the residential building. B. Shushma | M. Uday Bhaskar | N. Balaji | G. Srujan Yadav ""Air-Water System Design using Revit Mep for a Residential Building"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-3 , April 2019, URL: https://www.ijtsrd.com/papers/ijtsrd23314.pdf
Paper URL: https://www.ijtsrd.com/engineering/mechanical-engineering/23314/air-water-system-design-using-revit-mep-for-a-residential-building/b-shushma
it is basic introduction about Calculation of cooling load TETD due to sunlight & shaded roofs &walls using table,Load due to air filtration and Load due to ventilation.
Design of an Air Distribution System for a Multi Storey Office Buildingijtsrd
Earlier the use of air conditioning for comfort purpose was considered to be expensive, but now a day, it has been a necessity for all human beings. Window air conditioners, split air conditioners are used in small buildings, offices etc. But, when the cooling load required is very high such as big buildings, multiplex, multi story buildings, hospitals etc. centralized unit central air conditioners used. The central ACs systems are installed away from building called central plant where water or air is to be cooled. This cooled air not directly supplied to the building rooms. When the cooled air cannot be supplied directly from the air conditioning equipment to the space to be cooled, then the ducts are provided. The duct systems carry the cooled air from the air conditioning equipment for the proper distribution to rooms and also carry the return air from the room back to the air conditioning equipment for recirculation. When ducts are not properly designed, then it will lead to problem such as frictional loss, higher installation cost, increased noise and power consumption, uneven cooling in the cooling space. For minimizing this problem, a proper design of duct is needed. Equal friction method is used to design the duct, which is simple method as compared with the other design methods. These work gives the combination of theoretical and software tool to provide a comparative analysis of the duct size. It also gives the comparison between rectangular duct and circular duct. M. Pruthvi Raj | K. Prashanth Reddy | Mussan Shankar Reddy | B. Kranthi Kumar ""Design of an Air Distribution System for a Multi Storey Office Building"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-3 , April 2019, URL: https://www.ijtsrd.com/papers/ijtsrd23319.pdf
Paper URL: https://www.ijtsrd.com/engineering/mechanical-engineering/23319/design-of-an-air-distribution-system-for-a-multi-storey-office-building/m-pruthvi-raj
Taking a basic office design and making recommendations to reduce energy consumption, lower the carbon footprint and provide passive means of ventilating and cooling the building together with improving natural light while reducing solar gains
Design of HVAC system for commercial buildingjayeshmahajan24
PowerPoint Presentation Of project:-
https://www.youtube.com/watch?v=QFU-OVw4YNc
Detailed info of this paper is available on:-
https://www.slideshare.net/jayeshmahajan24/technical-details-of-energy-efficient-hvac-system/edit?src=slideview
In this paper, you will get information about new innovative ideas which should be added to our building. Also, we have invented a new outside wall section that has a low U value which will reduce the heat load of our building and its chip to build.
The development of solar energy gas coupling system (scada) in buildingseSAT Journals
Abstract The system mainly use wall-mounted gas boiler and give priority in use of solar energy in order to maximize the utilization of solar resources. The excess heat will be added to domestic water when the heat for floor radiant heating is enough. The PLC of Siemens is set as slave computer in the monitoring system and it is used to collect thermal parameters such as temperature, flow rate, etc. by temperature sensors, pressure sensors and flow rate sensors. WinCC is set as the host computer to monitor the operating conditions of the entire system. Real-time tracing, monitoring and alarming function can be achieved based on the SQL database, which has realized archive management of the date. The system has been debugged after the whole experiment platform is completed, and the running state of the system shows that this system has high reliability and good stability. Keywords: Solar Energy, Gas, PLC, WinCC, Database
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
Buildings contribute over 40 % of the total global primary energy use corresponding to 24 % of
the CO2 emissions of the world (IEA 2008). Building heating, ventilation, and air-conditioning
(HVAC) systems are responsible for about half of the energy use in buildings.
Functions of fuzzy logic based controllers used in smart buildingIJECEIAES
The main aim of this study is to support design and development processes of advanced fuzzy-logic-based controller for smart buildings e.g., heating, ventilation and air conditioning, heating, ventilation and air conditioning (HVAC) and indoor lighting control systems. Moreover, the proposed methodology can be used to assess systems energy and environmental performances, also compare energy usages of fuzzy control systems with the performances of conventional on/off and proportional integral derivative controller (PID). The main objective and purpose of using fuzzy-logic-based model and control is to precisely control indoor thermal comfort e.g., temperature, humidity, air quality, air velocity, thermal comfort, and energy balance. Moreover, this article present and highlight mathematical models of indoor temperature and humidity transfer matrix, uncertainties of users’ comfort preference set-points and a fuzzy algorithm.
Design of Heat Exchanger Network for VCM Distillation Unit Using Pinch Techno...IJERA Editor
In process industries, heat exchanger networks represent an important part of the plant structure. The purpose of the networks is to maximize heat recovery, thereby lowering the overall plant costs. In process industries, during operation of any heat exchanger network (HEN), the major aim is to focus on the best performance of the network As in present condition of fuel crises is one of the major problem faced by many country & industrial utility is majorly depend on this. There is technique called process integration which is used for integrate heat within loop so optimize the given process and minimize the heating load and cooling load .In the present study of heat integration on VCM (vinyl chloride monomer) distillation unit, Heat exchanger network (HEN) is designed by using Aspen energy analyzer V8.0 software. This software implements a methodology for HEN synthesis with the use of pinch technology. Several heat integration networks are designed with different ΔT min and total annualized cost compared to obtain the optimal design. The network with a ΔT min of 90C is the most optimal where the largest energy savings are obtained with the appropriate use of utilities (Save 15.3764% for hot utilities and 47.52% for cold utilities compared with the current plant configuration). Percentage reduction in total operating cost is 18.333%. From calculation Payback Period for new design is 3.15 year. This save could be done through a plant revamp, with the addition of two heat exchangers. This improvement are done in the process associated with this technique are not due to the use of advance unit operation, but to the generation of heat integration scheme. The Pinch Design Method can be employed to give good designs in rapid time and with minimum data.
Air Water System Design using Revit Mep for a Residential Buildingijtsrd
In this project we discussed the study and performance of air conditioner, air refrigeration and water conditioner system in a single unit. The main objective of this project is to develop the multifunctional system which can provide refrigeration effect, cold water and air conditioning effect with in regular air or space conditioning system. Air and water systems conditioning spaces by distributing the both conditioned air and water to the terminal units installed in the spaces for which the basic plan is given by civil department and the basic design is done by using REVIT MEP software. The air and water are heated or cooled in a central mechanical equipment room. The air supplied is termed as primary air to distinguish it from the recirculated or secondary room air. By using the peak cooling load values obtained in the heating and cooling load calculations the ton of refrigeration values for individual and total area is calculated which will be helpful for selection of accurate design for the residential building. B. Shushma | M. Uday Bhaskar | N. Balaji | G. Srujan Yadav ""Air-Water System Design using Revit Mep for a Residential Building"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-3 , April 2019, URL: https://www.ijtsrd.com/papers/ijtsrd23314.pdf
Paper URL: https://www.ijtsrd.com/engineering/mechanical-engineering/23314/air-water-system-design-using-revit-mep-for-a-residential-building/b-shushma
it is basic introduction about Calculation of cooling load TETD due to sunlight & shaded roofs &walls using table,Load due to air filtration and Load due to ventilation.
Design of an Air Distribution System for a Multi Storey Office Buildingijtsrd
Earlier the use of air conditioning for comfort purpose was considered to be expensive, but now a day, it has been a necessity for all human beings. Window air conditioners, split air conditioners are used in small buildings, offices etc. But, when the cooling load required is very high such as big buildings, multiplex, multi story buildings, hospitals etc. centralized unit central air conditioners used. The central ACs systems are installed away from building called central plant where water or air is to be cooled. This cooled air not directly supplied to the building rooms. When the cooled air cannot be supplied directly from the air conditioning equipment to the space to be cooled, then the ducts are provided. The duct systems carry the cooled air from the air conditioning equipment for the proper distribution to rooms and also carry the return air from the room back to the air conditioning equipment for recirculation. When ducts are not properly designed, then it will lead to problem such as frictional loss, higher installation cost, increased noise and power consumption, uneven cooling in the cooling space. For minimizing this problem, a proper design of duct is needed. Equal friction method is used to design the duct, which is simple method as compared with the other design methods. These work gives the combination of theoretical and software tool to provide a comparative analysis of the duct size. It also gives the comparison between rectangular duct and circular duct. M. Pruthvi Raj | K. Prashanth Reddy | Mussan Shankar Reddy | B. Kranthi Kumar ""Design of an Air Distribution System for a Multi Storey Office Building"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-3 , April 2019, URL: https://www.ijtsrd.com/papers/ijtsrd23319.pdf
Paper URL: https://www.ijtsrd.com/engineering/mechanical-engineering/23319/design-of-an-air-distribution-system-for-a-multi-storey-office-building/m-pruthvi-raj
Taking a basic office design and making recommendations to reduce energy consumption, lower the carbon footprint and provide passive means of ventilating and cooling the building together with improving natural light while reducing solar gains
Design of HVAC system for commercial buildingjayeshmahajan24
PowerPoint Presentation Of project:-
https://www.youtube.com/watch?v=QFU-OVw4YNc
Detailed info of this paper is available on:-
https://www.slideshare.net/jayeshmahajan24/technical-details-of-energy-efficient-hvac-system/edit?src=slideview
In this paper, you will get information about new innovative ideas which should be added to our building. Also, we have invented a new outside wall section that has a low U value which will reduce the heat load of our building and its chip to build.
The development of solar energy gas coupling system (scada) in buildingseSAT Journals
Abstract The system mainly use wall-mounted gas boiler and give priority in use of solar energy in order to maximize the utilization of solar resources. The excess heat will be added to domestic water when the heat for floor radiant heating is enough. The PLC of Siemens is set as slave computer in the monitoring system and it is used to collect thermal parameters such as temperature, flow rate, etc. by temperature sensors, pressure sensors and flow rate sensors. WinCC is set as the host computer to monitor the operating conditions of the entire system. Real-time tracing, monitoring and alarming function can be achieved based on the SQL database, which has realized archive management of the date. The system has been debugged after the whole experiment platform is completed, and the running state of the system shows that this system has high reliability and good stability. Keywords: Solar Energy, Gas, PLC, WinCC, Database
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
Buildings contribute over 40 % of the total global primary energy use corresponding to 24 % of
the CO2 emissions of the world (IEA 2008). Building heating, ventilation, and air-conditioning
(HVAC) systems are responsible for about half of the energy use in buildings.
Functions of fuzzy logic based controllers used in smart buildingIJECEIAES
The main aim of this study is to support design and development processes of advanced fuzzy-logic-based controller for smart buildings e.g., heating, ventilation and air conditioning, heating, ventilation and air conditioning (HVAC) and indoor lighting control systems. Moreover, the proposed methodology can be used to assess systems energy and environmental performances, also compare energy usages of fuzzy control systems with the performances of conventional on/off and proportional integral derivative controller (PID). The main objective and purpose of using fuzzy-logic-based model and control is to precisely control indoor thermal comfort e.g., temperature, humidity, air quality, air velocity, thermal comfort, and energy balance. Moreover, this article present and highlight mathematical models of indoor temperature and humidity transfer matrix, uncertainties of users’ comfort preference set-points and a fuzzy algorithm.
Recent advances in semiconductor technology show the improvement of fabrication on
electronics appliances in terms of performance, power density and even the size. This great achievement
however led to some major problems on thermal and heat distribution of the electronic devices. This
thermal problem could reduce the efficiency and reliability of the electronic devices. In order to minimize
this thermal problem, an optimal cooling techniques need to be applied during the operation. There are
various cooling techniques have been used and one of them is passive pin fin heat sink approach. This
paper focuses on inline pin fin heat sink, which use copper material with different shapes of pin fin and a
constant 5.5W heat sources. The simulation model has been formulated using COMSOL Multiphysics
software to stimulate the pin fin design, study the thermal distribution and the maximum heat profile.
Personal air-conditioning system using evapolar as heat waste managementjournalBEEI
Air-conditioning system that uses compressor-based initiate more energy and affects bill rate. As a result, an application of the Peltier impact module, a portable air-conditioning system is introduced to compensate user convenience by lowering sensible and latent heat inside the office area. Thermoelectric Peltier module is a thermoelectric semiconductor that offers cooling and hot plate once the plate is supplied by electric. The result reduces the cost, power consumption, and give thermal comfort in a dedicated space. The advantage of the study is the ability to cost deduction due to low power consumption and green technology devices factor because without refrigerant that harms the environment. Redesign the product with Evapolar as heat waste management affect the performance and need to be validated. The development stage of this product is better compared to a previous product which offers small scale, light, and portable. This product focuses on the office room, which gives a good feeling to users. This product uses air to remove the heat waste and the result indicates Evapolar is fit enough in dissipating heat. Finally, the performance of this system developed demonstrated that it can attain thermal comfort level.
Human Habits and Energy Consumption in Residential BuildingsLeonardo ENERGY
Highlights:
* Looks into users’ heating habits in residential buildings.
* Discusses the term ‘rebound’ - the fact that improved efficiency can result in more spending.
* Gives factual proof that direct rebound plays leading role in energy consumption in residential buildings.
Abstract To develop a home heating system with high efficiency, the outdoor temperature is not the only parameter to be considered but also disturbances such as ventilation, door/window openings and personal lifestyle. The aim of the project is to develop the home heating system which adapts itself to changing customer demands using fuzzy logic. The energy consumption and the outdoor temperature of the house were monitored over a period of one year to produce the data required to program the fuzzy controller and thereby the appropriate set temperature will be determined. When load disturbances such as door/window openings are given, there is an increase in the energy required by the heater. This additional energy is obtained as an output from the fuzzy controller and given to the heating system. The design, optimization and implementation of the fuzzy controller are supported by LabVIEW software
Building Energy Simulation project by using eQuestAsadullah Malik
The energy shortage crisis and the rapid change of global climate have become important issues in the world now a days since modern trends are shifting to more sustainable solutions to save energy and to reduce the emission of carbon dioxide. Generally speaking, when improving energy efficiency and adopting the energy –saving design, the advantage is not only providing low operating cost for stakeholders, but also reducing the negative impact on the global and ambient environment. This study analyzes the surveyed building integral energy consumption, evaluates its energy performance, and gives further recommendations for saving energy costs by using dynamic energy simulation tool eQuest.
An occupancy-based strategy employing computer vision for reducing cooling en...journalBEEI
The energy expended to cool the occupied areas by air conditioners represents a substantial share of the total energy exhausted in buildings. Therefore, developing strategies to reduce this energy is crucial. One of the preponderance strategies adopted to depreciate energy consumption in buildings is the occupancy-based strategy. In this research, an innovative model was established to achieve the goal of reducing cooling energy consumed in buildings based on occupancy-based combined with a constant temperature setpoint strategy in two phases, and each phase engrosses in 20 days. Phase one is to identify the extent of cooling energy employed according to the use of room occupants and its costs in consumption was 276.01 kWh after completion of this phase. Sequentially, constructing phase two intended to reduce cooling energy consumption by employing an automatic air-conditioner (AC) control strategy relying on an improved human detection algorithm with a 25℃ as temperature setpoint, resulting in 112.45 kWh of consumption. To complement the motives for elaboration, the human detection measurement using you only look once (YOLO) improved by applying pre-processing algorithms to reach an average human detection enhancement of 21.2%. The proposed model results showed that potential savings associated with the embraced strategy decreases by more than anticipated as the amount of reduced energy reached 59% savings.
Proper ventilation in one of the primary requirements of any domestic or commercial buildings. The conventional method employs usage of air conditioning or air cooling systems which requires high power consumption. The solar driven ventilation systems can be used in buildings which doesn’t require any external power. The current research reviews various researches conducted in improving system of passive ventilation along use of phase change material as energy storage system. Passive design of buildings does not use the electrical and mechanical systems in providing comfortable indoor environment. Prem Shankar Sahu | Praveen Kumar | Ajay Singh Paikra "Review on Solar Chimney Ventilation" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-5 | Issue-4 , June 2021, URL: https://www.ijtsrd.compapers/ijtsrd42427.pdf Paper URL: https://www.ijtsrd.comengineering/mechanical-engineering/42427/review-on-solar-chimney-ventilation/prem-shankar-sahu
Impact of user behaviour and intelligent control on the energy performance of...Leonardo ENERGY
Highlights:
* Resident's behaviour has a significant impact on the energy consumption in a dwelling
* Certain commercially available technologies and their control result in significant primary energy savings and reduced costs for households
* Current official energy performance evaluation tools do not valorize the saving potential of those technologies
Similar to Concept and realisation_of_an_eib_based_automated_ (20)
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Empowering the Data Analytics Ecosystem: A Laser Focus on Value
The data analytics ecosystem thrives when every component functions at its peak, unlocking the true potential of data. Here's a laser focus on key areas for an empowered ecosystem:
1. Democratize Access, Not Data:
Granular Access Controls: Provide users with self-service tools tailored to their specific needs, preventing data overload and misuse.
Data Catalogs: Implement robust data catalogs for easy discovery and understanding of available data sources.
2. Foster Collaboration with Clear Roles:
Data Mesh Architecture: Break down data silos by creating a distributed data ownership model with clear ownership and responsibilities.
Collaborative Workspaces: Utilize interactive platforms where data scientists, analysts, and domain experts can work seamlessly together.
3. Leverage Advanced Analytics Strategically:
AI-powered Automation: Automate repetitive tasks like data cleaning and feature engineering, freeing up data talent for higher-level analysis.
Right-Tool Selection: Strategically choose the most effective advanced analytics techniques (e.g., AI, ML) based on specific business problems.
4. Prioritize Data Quality with Automation:
Automated Data Validation: Implement automated data quality checks to identify and rectify errors at the source, minimizing downstream issues.
Data Lineage Tracking: Track the flow of data throughout the ecosystem, ensuring transparency and facilitating root cause analysis for errors.
5. Cultivate a Data-Driven Mindset:
Metrics-Driven Performance Management: Align KPIs and performance metrics with data-driven insights to ensure actionable decision making.
Data Storytelling Workshops: Equip stakeholders with the skills to translate complex data findings into compelling narratives that drive action.
Benefits of a Precise Ecosystem:
Sharpened Focus: Precise access and clear roles ensure everyone works with the most relevant data, maximizing efficiency.
Actionable Insights: Strategic analytics and automated quality checks lead to more reliable and actionable data insights.
Continuous Improvement: Data-driven performance management fosters a culture of learning and continuous improvement.
Sustainable Growth: Empowered by data, organizations can make informed decisions to drive sustainable growth and innovation.
By focusing on these precise actions, organizations can create an empowered data analytics ecosystem that delivers real value by driving data-driven decisions and maximizing the return on their data investment.
Chatty Kathy - UNC Bootcamp Final Project Presentation - Final Version - 5.23...John Andrews
SlideShare Description for "Chatty Kathy - UNC Bootcamp Final Project Presentation"
Title: Chatty Kathy: Enhancing Physical Activity Among Older Adults
Description:
Discover how Chatty Kathy, an innovative project developed at the UNC Bootcamp, aims to tackle the challenge of low physical activity among older adults. Our AI-driven solution uses peer interaction to boost and sustain exercise levels, significantly improving health outcomes. This presentation covers our problem statement, the rationale behind Chatty Kathy, synthetic data and persona creation, model performance metrics, a visual demonstration of the project, and potential future developments. Join us for an insightful Q&A session to explore the potential of this groundbreaking project.
Project Team: Jay Requarth, Jana Avery, John Andrews, Dr. Dick Davis II, Nee Buntoum, Nam Yeongjin & Mat Nicholas
Explore our comprehensive data analysis project presentation on predicting product ad campaign performance. Learn how data-driven insights can optimize your marketing strategies and enhance campaign effectiveness. Perfect for professionals and students looking to understand the power of data analysis in advertising. for more details visit: https://bostoninstituteofanalytics.org/data-science-and-artificial-intelligence/
Adjusting primitives for graph : SHORT REPORT / NOTESSubhajit Sahu
Graph algorithms, like PageRank Compressed Sparse Row (CSR) is an adjacency-list based graph representation that is
Multiply with different modes (map)
1. Performance of sequential execution based vs OpenMP based vector multiply.
2. Comparing various launch configs for CUDA based vector multiply.
Sum with different storage types (reduce)
1. Performance of vector element sum using float vs bfloat16 as the storage type.
Sum with different modes (reduce)
1. Performance of sequential execution based vs OpenMP based vector element sum.
2. Performance of memcpy vs in-place based CUDA based vector element sum.
3. Comparing various launch configs for CUDA based vector element sum (memcpy).
4. Comparing various launch configs for CUDA based vector element sum (in-place).
Sum with in-place strategies of CUDA mode (reduce)
1. Comparing various launch configs for CUDA based vector element sum (in-place).
Concept and realisation_of_an_eib_based_automated_
1. See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/228582117
Concept and realisation of an EIB based automated room climate control
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www.spasokukotskiy.info
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Heinrich Ruser
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2. EIB Conference, Technical University Munich, 2001
1
Concept and realisation
of an EIB based automated room climate control
D. Jelondz, K. Spasokukotskiy and H. Ruser
Universität der Bundeswehr München
Institut für Meß- und Automatisierungstechnik
Werner-Heisenberg-Weg 39, D-85577 Neubiberg b. München
URL: www.unibw-muenchen.de/ima/ and http://smarthome.et.unibw-muenchen.de
Email: {dmitri.zhelondz, konstantyn.spasokukotskiy, heinrich.ruser}@unibw-muenchen.de
ABSTRACT
The paper deals with technical problems of automated decentralised indoor climate
control in residential buildings. The lead value for the realisation of the control system
is the objective thermal comfort. The measurement system to be designed works as
a network between a large variety of different sensors and actuators. A
comprehensive and flexible EIB networked instrumentation using cheap commercial
and prototype sensors and actuators has been created and tested in a realistic test
environment. In the paper, the conditions for a modern room climate control are
discussed and the technical base for data acquisition system containing several
different data collection channels is presented. Extensive measurements with the
reliable, fully redundant data acquisition system showed its applicability in residential
buildings. Based on the presented concept, different systems configurations can be
realised. Following the results, a low-cost decentralised automated room climate
control system is able to become a new standard in low-energy buildings, opening a
huge market potential.
Keywords: smart home, indoor climate control, energy consumption optimisation,
residential building automation.
1. INTRODUCTION
Strategies to reduce and optimise energy consumption are a global challenge, both
economically and environmentally. The energy consumption in residential buildings
consists mainly of two parts: energy required for heating and energy required for
driving electrical devices. In recent decades, new construction techniques and
insulating materials have been developed which remarkably reduce the heat loss of
buildings, enabling high energy savings at the cost of a diminished natural air
exchange. In this situation, sufficient indoor air quality must be guaranteed by
appropriate heating and ventilation of rooms. Improvements of HVAC systems in
residential buildings are aimed at a reduction of energy consumption and an
adjustment of comfortable climate in rooms. Decentralised automated thermal
3. EIB Conference, Technical University Munich, 2001
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climate control in sense of heating and ventilation control separately for each room
offer good possibilities to achieve these demands [1,2].
The input parameters for the control system will be obtained from thermal models
considering thermodynamical processes based on the energy balance in the room.
The climate response state of rooms is very complex and nonlinear. This implies that
the designed climate control system should work as a network between a large
variety of different sensors and actuators.
A decentralised measurement and control system has been developed and installed
in two test rooms in our SmartHOME Lab which is a single-family-type living house
recently built on the University Campus site, see Fig. 11
. The survey has three
important goals: the determination of appropriate parameters for the physical room
model, the concept for an optimal thermal control separately for each room, and the
estimation of the achievable energy savings depending on the user’s behaviour.
Fig. 1.SmartHOME Lab at Bundeswehr University Munich – general view and
location of test rooms.
2. THERMAL CONDITIONS FOR ROOM CLIMATE CONTROL
The physical models of thermodynamical processes are based on the energy
balance. The simplified energetic balance in a room can be presented as (s. Fig. 2):
LTlossgainGH QQQQQQ +≡=≡+ (1)
where:
HQ - heat flow to the room from the heating devices,
GQ - heat flow due to heat sources inside the room,
TQ - heat flow due to differences between surface wall temperature and air
temperature,
1
Readers are invited to go on a Virtual Tour through our Lab: http://smarthome.et.unibw.muenchen.de
4. EIB Conference, Technical University Munich, 2001
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LQ - heat flow due to air exchange from ventilation.
The heat flow GQ is the summed heat flow of several sources in the room:
BQCQMQPQSQGQ ++++= (2)
where SQ , PQ , MQ , CQ , BQ describe the heat flows due to the solar heating, persons,
electrical devices, chemical reactions, and lighting, resp.
The amount of HQ necessary to establish a desired room temperature depends
essentially on lossQ and on the variable disturbance GQ . The variations lossQ∆ and
GQ∆ should be compensated through HQ∆ .
QT
QL
QT
QT
QT
QS
QI
QH
Fig. 2: Thermal balance of rooms [2]
For conventionally constructed buildings the heat loss due to thermal exchanges via
the building’s envelope is considerably large and lossG QQ << holds. This leads to the
following conditions:
HGHGH QQQQQ ∆≈∆+∆⇒>> (3)
meaning that a relatively stable physical state can be maintained just by temperature
control of any room in the building in accordance to the outdoor air temperature
( lossQ∆ dependence).
In recent times, due to new passive techniques of heat leakage reduction, a large
progress in energy saving can be observed (Fig. 2). As a consequence, the following
is achieved:
HGHGloss QQQQQ ∆≠∆+∆⇒≈ (4)
According to Eq. (4), the heat flow due to internal heat gains plays a significant role in
the thermal balance and can not be ignored. The value GQ depends largely on solar
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heating gains, i.e. on specific room parameters like location and size of the room and
its apertures (windows and doors) as well as on the presence of persons and working
electrical devices in the room. If all rooms would be controlled by one central device -
as it is conventionally -, at most one room could be controlled optimally, at cost of all
other rooms which would be controlled suboptimal meaning a discomfort for the user
and a significant waste of energy. As a consequence, an intelligent climate control
system should work separately in each room.
4321
Transmission heat
KWh/m²a
0
10
20
30
40
50
60
Heat losses
Ventilation heat
c
b
a
c
b
a
progress
Fig. 3. Energy loss for single family house with ca. 130m2
usable area.
1. After German Warmeschutzverordnung, 1995 [3]
2. After German Warmeschutzverordnung, 2000 [4]
3. For low-energy building (research lab) with standard ventilation
(bad room climate conditions)
4. For low-energy building with separated smart heating and
ventilation as well as use of heat exchangers
Efforts of heat leakage reduction beyond the instructions of the latest
Wärmeschutzverordnung [4] may cause new problems to the thermal comfort in
rooms. Because the thermal system is strongly changeable due to disturbances
which have much lower setting times than the response time of the room (e.g. the
users will open windows and doors frequently), additional heat leakage could even
be greater than the savings achieved [2]. This fact can be seen on Fig. 3, where the
trends b and c of energy reduction are going to be flat. Estimations of possible
energy reductions with sophisticated HVAC systems are shown in the bars 3 and 4.
3. CONCEPT FOR A ROOM CLIMATE CONTROL SYSTEM
Climate control encompasses the research on both the physical processes involved
in accomplishing the desired climate in rooms, and on the installations needed to
realise the desired climate. A combination is made of theoretical research with
simulation support and experiments in which the climate parameters and processes
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are measured under (semi)practical conditions. Relevant is the dynamic behaviour as
well as the spatial distribution of the climate parameters. Here, the control of energy
flows (heating, ventilation) is considered in relation to the meteorological values
outside and to the specifications of the rooms.
For an analysis of the physical room model, two rooms in the test house with different
geometry and location have been selected: a large room (38 m2
) on the south side
(‘living room’) and a small room (10 m2
) on the north side (‘home office’), see Fig. 1.
Also the heating and ventilation systems in these rooms differ: The ‘home office’ is
heated (and cooled) by a radiator or a under-floor convector and cooled by a
decentralised ventilation system. The ‘living room’ is additionally connected to the
central ventilation system and equipped with wall-panel heaters additional to
radiators and under-floor convectors.
Out of the large number of different physical parameters influencing the subjective
perception of thermal comfort [5,6], the following parameters are considered for
continuous registration:
- Mean air room temperature,
- Relative air humidity,
- Mean air velocity,
- Concentration of the carbon dioxide (CO2),
- Radiation temperature.
The central ventilation and all detached ventilators and heating devices are centrally
controlled. Furthermore, the opening of windows and doors is monitored by reed
contacts. Internal heat sources like the presence and the activity of persons in rooms,
the warm water usage and the energy consumption of electrical devices (with
‘intelligent’ wall sockets [7]) will be registered. On behalf of the output of occupancy
sensors the temperature set point of the heating system might be reduced or
switched off while the room is unoccupied.
The weather data are of great importance for the calculation of the heat flow balance.
From a weather station installed on the roof of the test house and connected to the
control system via EIB, the following weather parameters are obtained:
- Air temperature,
- Air relative humidity,
- Wind speed,
- Wind direction,
- Sun radiation (global and diffuse),
- Rainfall.
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On a total, as much as 36 different parameters are being measured continuously in
the room. The specifications of the applied sensors as well as the data flow to the
central processing unit are summarised in Table 1.
Parameter Number Location Sensor type Range Resolution Accuracy Output
Data
acquisition
Sensors in the test rooms :
Air
temperature
2
Inflow,
outflow
Dallas
DS1820B
-55..120 o
C 0.0625K 0.3K Voltage
MCMà
EIBàPC
Air humidity
2
Inflow,
outflow
Panametrics
MiniCap
5..95% 1% 1.5% rF. Voltage
MCMà
EIBàPC
Air velocity 2
Inflow,
outflow
UniBwM
developed
sensor
0.1..20m/s 0.01m/s
1.5% of
MV
Voltage
MCMà
EIBàPC
Wall surface
temperature
var.,
~200
0.5m grid
Dallas
DS1820B
-55..120 o
C 0.0625K 0.5K
1-Wire
busTM
1-Wireà
PC
2xHK
Heater
Inflow and
outflow
Dallas
DS1820B
-55..120 o
C 0.062K 0.5K
1-Wire
busTM
1-Wireà
PC
Heater surface
temperature
1xHK
Centre of
heater
surface
Dallas
DS1820B
-55..120 o
C 0.0625K 0.5K
1-Wire
busTM
1-Wireà
PC
CO2
concentration
1 Outflow
Sensor devices
ATQ32
0..5000ppm 2ppm
1.5% v.
MV
Voltage
MCMà
EIBàPC
Weather station :
Temperature 1 Roof
Thies
1.1005.54.161
-30..70 o
C 0.1K 0.3K Voltage EIBàPC
Humidity
1 Roof
Thies
1.1005.54.161
0..100% 0.1% 2% rF. Voltage EIBàPC
Brightness 1 Roof
Thies
7.1414.50.000
0..100000
Lux
100 Lux
5000
Lux
Voltage EIBàPC
Wind direction 1 Roof
Thies
4.3125.32.060
0..360o
0.4o
2.5o
Voltage EIBàPC
Wind velocity 1 Roof
Thies
4.3519.00.073
0.5..50m/s 0.1m/s
3%
of MV
Voltage EIBàPC
Table 1: Instrumentation in the test rooms and for the weather station.
(MV–measured value, HK–heater, MCM– Multi-Chip-Modul, PC–Personal Computer)
4. REALIZATION OF THE TECHNICAL INFRASTRUCTURE
The consumption of heating energy will be measured both for every heater in the test
rooms and for all heating circles in the building. The room temperatures and the
valve position will be adjusted and protocolled via EIB. The instrumentation and data
flow structure for registering the heat flow from all heaters and heat circles used in
the test rooms are shown in Fig. 4. For this purpose, EIB based heat flow meters
have been designed. The sensor data are transferred via European Installation Bus
(EIB) to the processing unit.
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Screed heating
Panel heating
Floor convector heating
Radiators
Heat meter
Heat meter
Heat meter
IInflow
Outflow
EIB
Living room
Central ventilation
Electrical
power
Floor convector heating
Radiator
Decentralized ventilation
Office
Heat meter
IInflow
Outflow
Electricity meter
Electricity meter
Fig. 4: Heat flow measurement from heaters. Instrumentation and data flow structure
For later marketing requirements, all instrumentation should be installed such that
they can be hidden either in the building envelope or in standard technical room
equipment. The sensors measuring the indoor air quality [8] have been mounted in
the inlet and outlet pipes of the ventilation system (see Fig. 5). The following
parameters are measured: air temperature, air humidity, air flow rate, CO2
concentration.
To measure the temperature distribution of the room walls, about 200 temperature
sensors (Dallas Semiconductors DS18B20) have been installed in the office on an
area of 50 m2
. The sensors are integrated into a network with unique 1-WireTM
interface.
9. EIB Conference, Technical University Munich, 2001
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Ventilation system
CO2
CO2
ca. 200 temperature sensors
on 50 m
2
surface
Fig. 5. Test bed for research purposes: Sensor placement in the ‘home office’
The sensor data acquisition and processing system consists of two data loggers for
reading the data from sensors, a control computer, where the data is processed, and
a backup computer for storing the measured data in a database. Both loggers are
based on Linux operational system. For reliability reasons, at the same time only one
of the loggers acquires the sensor data while the second observes the first. If the first
logger fails, the second undertakes its functions (parallel redundancy principle). All
the computers are connected to the local network with Internet access (Fig. 6).
Sensors
Aktors
Sensors Control Backup
Loggers
EIB
1-WIRE
M-BUS
Test house
Local network / Internet
Database
Fig. 6. Data acquisition system
The sensors, which are connected to the 3 field buses, are scanned by the data
logger with defined time intervals (at present, every 5 min). The measurement data is
saved in ASCII format on hard disk and transferred via FTP protocol to the database
computer which decodes the data and writes it into the main database (MySQL).
Later, the data from the database will be used by the Control PCs for visualisation
(see screenshot Fig. 7) and future processing, e.g. to refine the physical room model.
10. EIB Conference, Technical University Munich, 2001
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The results from the physical room model are used by the control block to produce
commands for the actors (e.g. heater valve). The command file is transferred first to
the main database and at the appropriate time point via FTP protocol to the data
logger, which sends decoded commands via EIB to the actuators. In the described
system more than one control computer can be used. The main database is saved
daily by the backup computer.
Fig. 7. Visualisation of measurement data (screenshot from Control PC).
Weather data over a full day:
from top to bottom: (left) wind direction, wind speed, rainfall;
(right) brightness, sun radiation, humidity, temperature, air pressure
5. DISCUSSION
Energy loss estimations in residential buildings show that automated room climate
control systems working separately for each room is likely to become a new standard
in low-energy buildings. The lead task for the realisation of the control system is the
establishment of an objective thermal comfort. Besides that, automated room climate
control is meant to reduce the over-all energy consumption in ‘Smart Homes’. In
11. EIB Conference, Technical University Munich, 2001
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order to obtain parameters for the control system, appropriate thermal room models
have to be used. In the paper, a new concept of the technical base of a
comprehensive measurement environment has been presented. Based on the well-
established EIB technology, a flexible information network for distributed sensors and
actuators has been created. On its base, different system configurations for
separated room climate automatic control can be realised. Extensive experiments
with the reliable full redundant data acquisition system show the applicability of the
system in private homes.
Acknowledgement
This work is part of project BA547 (Intelligent Instrumentation of Homes, IWO-BAY)
sponsored by Bayerische Forschungsstiftung.
REFERENCES
[1] C.N.Herrick, K.Connolly: Electrical Control Systems for Heating and Air
Conditioning, Englewood Cliffs, Prentice Hall, 1998
[2] Eickenhorst, H.; Joos, L; et al.: Energieeinsparung in Gebäuden - Stand der
Technik, Entwicklungstendenzen. Vulkan Verlag, Essen, 1998
[3] Verordnung über einen energiesparenden Wärmeschutz bei Gebäuden
(Wärmeschutzverordnung), August 1994
[4] Verordnung über einen energiesparenden Wärmeschutz bei Gebäuden
(Wärmeschutzverordnung), Draft February 2000
[5] Moderate thermal environments -- Determination of the PMV and PPD indices
and specification of the conditions for thermal comfort, ISO Standard 7730-1994
[6] Thermal comfort. ASHRAE Handbook - Fundamentals, 1997
[7] W.Müller, F.Schneider: Surveillance of household appliances using the EIB, EIB
Conference, Munich 1998
[8] H.-R.Tränkler, L.Schratt: Key sensor module for home automation, EIB
Conference, Munich 1998
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