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This document summarizes a solar-assisted air conditioning system for residential buildings in China. It finds that the system can save 33.66-348.21 kWh of electricity per year compared to a conventional air conditioning system. It also estimates that a family of 3 could save 1238.61 kWh per year using this system, nearing their goal of 2000 kWh in annual electricity savings. Diagrams and tables are presented on the system components and their specifications, as well as the system's coefficient of performance over different months.
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More likely, it includes the thermal potential within the ground, water bodies and infrastructure such as subways, water, sewer, building foundations and other buildings as well as artificial thermal storage such as phase change materials.
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Combined heat and power comes with a lot of jargon to navigate - make sense of it with our guide to the energy industry’s acronyms.
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Thermal Potential in the Built Environment
HVAC systems have traditionally used the local ambient air (heating and cooling) or fossil fuels (predominantly heating through combustion) as their heat source and heat sink. Thermal storage is still a relatively new application and typically requires large volumes of water or ice.
This paper explores the available thermal potential within the built environment and how the utilisation of this thermal potential can provide efficient heating, cooling and hot water as well as thermal storage. In some instances, this may be the local ambient air, less likely it will be fossil fuels.
More likely, it includes the thermal potential within the ground, water bodies and infrastructure such as subways, water, sewer, building foundations and other buildings as well as artificial thermal storage such as phase change materials.
The key is to identify the optimal thermal sources, sinks and storages for a given building at a given location and climate. Then, an integrated approach using optimised control strategies, including predictive capabilities, will enable a building to access these various thermal sources at the thermally optimal time to provide significant energy savings and enhanced operation.
Such an integrated approach also maximises the availability of on-site renewable power generation, further increasing energy savings, decreasing the typical cooling peak demand and increasing energy productivity.
Gas power station (GPS)
1. A gas-fired power plant burns natural gas to generate electricity. It converts the chemical energy in natural gas into thermal energy, then mechanical energy, and finally electrical energy.
2. There are three main types of gas-fired power plants: simple cycle gas turbines, combined cycle gas turbines (CCGT), and reciprocating engines. CCGT plants are the most efficient type.
3. Gas-fired power plants emit around 500g of CO2 per kWh generated, which is less than coal but more than nuclear and renewable energy sources. Carbon capture could reduce these emissions.
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The presentation discusses how utilizing thermal potential through geoexchange systems can enhance energy efficiency and productivity. Thermal potential involves using heat sources and sinks from the local environment for heating and cooling. Geoexchange transfers heat between the earth and buildings through ground heat exchangers. Case studies show geoexchange systems at St Peters College and Geoscience Australia reduced energy usage by over 50% and provided significant cost savings. Optimizing thermal energy storage and control strategies can better integrate renewable thermal and electrical energy sources to maximize efficiency.
Sizing of solar cooling systems
For download link head to http://solarreference.com/solar-cooling-training-presentation/
Also available from SOLAIR website.
A presentation from the SOLAIR project on sizing of solar air conditioners. their website has a lot of details information. For similar useful resources visit us on http://solarreference.com
Cogeneration
Cogeneration, or combined heat and power (CHP), involves generating electricity and useful thermal energy from a single fuel source. This is more efficient than separate generation of power and heat, with overall efficiencies potentially over 75%. Cogeneration can reduce fuel costs by 40-50% and lower carbon dioxide emissions. It provides reliable, lower cost power for industrial processes and other applications like district heating. Widespread adoption of cogeneration could cut India's fuel use and greenhouse gas emissions significantly.
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WTH is CHP? A Guide to the Energy Industry’s Acronyms
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The building conditioning by solar cooling, Roberto Jodice, CORTEA
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The document discusses different typography options for an album by Ghost Lit Kingdom. It analyzes whether each option is appropriate for the indie genre and whether it resembles typography used by existing indie artists. Options that are too stylistically different from the indie genre or do not resemble other artists are said to be less effective and could cause loss of audience and revenue. Options that blend elements of popular indie artists' typography styles, like Birdy and Lana Del Rey, are said to better help the artist gain recognition and popularity and increase revenue.
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This document contains information about upcoming events including an information session for a future career in medicine on June 13th, auditions for a fall production being held on June 14th, 15th, and 21st, and a girls soccer team playing in OFSAA quarterfinals with a chance to advance to semifinals with a win that morning.
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Este documento trata sobre la prevención del cáncer. Explica que el cáncer se origina dentro del cuerpo humano a través de un crecimiento descontrolado de las células. Identifica varios tipos de cáncer y sus causas, incluyendo factores genéticos, exposición a carcinógenos como el tabaco y la radiación, y ciertos virus. Finalmente, enfatiza que la mejor manera de prevenir el cáncer es evitar los factores de riesgo como fumar y exponerse excesivamente al sol.
Agenda Encuentro Internacional de Cine Comunitario
Este documento presenta la agenda de un Encuentro Internacional de Cine Comunitario que se llevará a cabo en Ecuador del 26 al 29 de noviembre. La agenda incluye mesas redondas, talleres, presentaciones de libros y exhibiciones de películas comunitarias con la participación de expertos de Argentina, Bolivia, Colombia, Ecuador y Perú. El objetivo del encuentro es promover el intercambio de experiencias y el fortalecimiento de la red de cine comunitario en América Latina.
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001 160718 energy systems for green buildings20160718-2
This document summarizes energy systems for green buildings, including solar energy, heat pumps, combined cooling heating and power (CCHP) systems, and their demonstrations at Shanghai Jiao Tong University's Green Energy Laboratory. Solar energy applications like solar water heating and solar cooling with absorption chillers are discussed. Ground source heat pumps and a river water source heat pump system are demonstrated. A movable micro-CCHP system and smart microgrid with photovoltaics, wind, and CCHP are also presented. Experimental results from the green laboratory showcase technologies like solar heating and cooling, ground source heat pumps, and a river water source heat pump.
Financial Evaluation of Solar Powered Absorption Cooling System for Computer ...
This document evaluates the financial feasibility of a solar powered absorption cooling system for a computer laboratory in Bharatpur, India. It finds that:
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This document provides an overview of solar water heating systems. It discusses the different types of solar thermal collectors categorized by operating temperature, including low-temperature unglazed mats, mid-temperature glazed and insulated collectors, and high-temperature evacuated tubes and focusing collectors. The document then presents examples of solar water heating systems installed at various facilities in the US, including residential, commercial, and institutional buildings. Calculation methods are also provided for sizing a solar water heating system and estimating energy savings and cost effectiveness.
Solar Photovoltaic/Thermal Hybrid System: Seminar Topic
Solar Photovoltaic and Thermal hybrid system helps in optimizing the efficiency of solar pv panel by extracting the heat from the surface of PV module. So, we get electrical and thermal efficiency as product. Normally, water or air is used as working fluid. The seminar topic i.e. this presentation have literature reviews on four main research papers and respective major findings from them. I would recommend the viewers to download the presentation because there is resolution problem while viewing on this website.
The detailed report of this presentation can be seen at :- https://dx.doi.org/10.13140/RG.2.1.1435.3443
Enhancing the Power and Efficiency of Photovoltaic Panel Using Heat Sinks wit...
The document describes a study that designed and tested a passive cooling system for photovoltaic solar panels using heat sinks with fans. The system aimed to improve the solar panel's power efficiency by lowering its operating temperature. Testing showed that using the cooling system decreased the solar cell's average temperature by 5°C, and increased the average output current by 9.34%, voltage by 7.03%, power by 13.34%, and efficiency by 11%. The cooling system consisted of a temperature sensor, microcontroller, two identical heat sinks with four fans each attached to the back of the solar cell panel.
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The AugERE Team consists of professors and engineers from the University of Genoa who research integrated solar assisted heat pumps (ISAHPs). They have developed a prototype ISAHP system using unglazed solar panels and a variable speed heat pump. This system achieves higher efficiencies and lower costs compared to traditional solar thermal systems due to lower panel temperatures. The team has also modeled a PCEA plant which separates the water and refrigerant loops, allowing more flexibility and the ability to use commercial components. Dynamic simulations show the PCEA plant can achieve a average COP of 5.6 and solar efficiency of 0.38% with optimal performance.
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This document describes a proposed hybrid renewable energy system that uses both solar and wind energy. It discusses designing a solar photovoltaic system to power 60 apartments, including calculating the power consumption demands, determining the required number and size of solar panels, and selecting batteries. It also discusses enhancing the performance of photovoltaic panels through water cooling. Additionally, it analyzes and optimizes the use of a vertical-axis wind turbine as part of the hybrid system. The goal of the hybrid system is to provide a stable power supply throughout the year using multiple renewable energy sources.
International Journal of Engineering Research and Development
Electrical, Electronics and Computer Engineering,
Information Engineering and Technology,
Mechanical, Industrial and Manufacturing Engineering,
Automation and Mechatronics Engineering,
Material and Chemical Engineering,
Civil and Architecture Engineering,
Biotechnology and Bio Engineering,
Environmental Engineering,
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This document summarizes the design and automation of a zero energy model house using a photovoltaic solar energy system. The model house was constructed to have energy needs that could be met by a scaled solar panel system. Sensors were installed to monitor temperature, voltage, and current. A LabVIEW program was developed to control fans and heating elements to maintain the desired temperature setpoint using a PID control loop. Empirical models were developed from experimental data and used to tune the PID controller. Test results showed the controller could successfully maintain the temperature setpoint, demonstrating the feasibility of a zero energy house using a renewable energy source.
Enhancement of the output power generated from a hybrid solar thermal system
Abstract This paper investigates the output power and increased the efficiency of a hybrid Photovoltaic/ Thermal (PV/T) modules through utilizing the heat generated from the surface of panels by one axial tracking of the hybrid PV/Tsystem by means of zenith angle and decreasing the heat generated from the PV modules by controlling the flow rate of the system. A comparison between theoretical and experimental work results for fixed and tracking PV/T hybrid system is presented. Comsol software package used to simulate the electromagnetic waves produced by the sun through solving Maxwell's equations in three dimensions and the sun irradiance is assumed to be Gaussian distribution across the twelve mourning hours. Beside that an experimental work is presented depending on the results conjured from the theoretical experience used in Comsol Multiphysics In the second part of the experimental work, one axial sun-tracking system is designed where the movement of a photo-voltaic module is controlled to follow the Sun’s radiation using a Data acquisition card (DAQ) unit. Finally an active cooling system is designed and conducted to cool the fixed and tracking modules at which an absorber system consists of copper pipe welded with aluminium plate is attached underneath the PV modules to allow water flowing below the modules. In addition to the above an electrical analysis for both systems are presented where I-V, P-V, power with 12 mourning hour’s and electrical efficiency. Beside that the thermal analysis for the fixed and tracking PV modules and the piping water are presented where the input, output temperatures, the total energy of heat losses and thermal efficiency are calculated. As a result, a significant enhancement in the total electrical efficiency is observed with acceptable increase in the output water temperature. Keywords: Cooling systems; DAQ; Hybrid; Comsol Multiphysics; Mat lab; Solid work; Lab view.…
heat pump presentation 25-8-15
The document discusses heat pump systems and compares their costs to traditional heating methods. It provides cost comparisons for heating domestic hot water and swimming pools using electric heaters, gas boilers, solar heaters, and air-to-water heat pump systems. The heat pump systems can cut heating and cooling costs by up to 70% and pay for themselves within 3 years through energy savings. They also provide free cooling and heating of domestic water in addition to primary heating/cooling functions. Installation examples of heat pump systems are shown for various projects in Dubai, the UK, and Spain.
Gas Networks Ireland Technical Presentations- Part L
In case you missed it !! NuTech gave a presentation at the recent Gas Networks Ireland (GNI) Conference for BER Assessors. The presentation deals mainly with how the NuTech Solar Enhanced Heating and Hot Water system can be used together with a simple and reliable gas boiler system can be used to comply with Part L & achieve an A Rated House. The presentation also gives information on the NuTech Solar Enhanced Ventilation and Hot Water system can be used to satisfy Part L.
Must-hybrid-power-generation-station {wind turbine (hawt)&solar (pv)}
hybrid-power-generation-station {wind turbine (hawt)&solar (pv)}
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poster_7_17_BC3
- 1. TEMPLATE DESIGN © 2008 www.PosterPresentations.com 2015/7/26 1 TEMPLATE DESIGN © 2008 www.PosterPresentations.com Background Zhoukanghang Residential Area Grid-Connected PV system A slightly larger air-cooled condenser is applied to increase the average COP Heat can be imparted into the refrigerant via the water storage tank, so the compressor can remain off longer to increase the average COP. Conclusion Energy Saving: •The Solar-assisted Air conditioner system: 348.21 KWh •The PV: 890.40KWh For a family of 3(3000KWh electricity consumption/year), 1238.61KWh electricity could be saved.(Aim:2000KWh electricity consumption/year) Load Calculation Shiny Panda Tiphaine Laurent, Li Bangjun, Yao Congcong, Wang Xiaoshen, Dai Liming, Xiong Peng, Hua Lingji, Dai Yanjun Building Specification PV Refrigeration System Solar-assisted air conditioner system A3 A2 A1 10cm 55cm Evaporating temperature System COP No effect on refrigerating output 2 2.5 3 3.5 4 4.5 5 5.5 6 November December January February March COP Month Conventional Plant Solar-assisted Plant Average COP 3.1 & 4.12 Fig. Energy consumption comparison Average Energy Saving 33.66%0 100 200 300 400 500 600 700 800 900 November December January February March 512 746 810 769 656 297 499 607 538 406 EnergyConsumption(kwh) Month Conventional Plant Solar-assisted Plant Fig. Coefficient of performance (COP) comparison Electricity consumption：3000kwh/year Hot water consumption：150L/day Expect reducing electricity consumption: 1000kwh/year The area of A-3 apartment: 78.95㎡ Type Coolin g Heating yearly load Kwh 4131.6 5 3513.57 1-compressor ; 2-water tank; 3-thermal expansion valve; 4-evaporator/collector Heat to water Heat from solar (and/or ambient) Fig. Performance of the DX-SAHP system in Shanghai annual average COP 4.8 Solar thermal Building integration Solar-assisted heat pump COP = 4 A. PV panels B. Combiner box C. Solar charge controller D. Power transformer E. thin film module F. Grid-connected inverter G. Grid-connected PV power station H. Household electrical appliances Component Parameter Value Solar Panel Output Voltage 48V Inverter Output Voltage 220V Rated Capacity 3kVA Power transformer Input Voltage 31V Output Voltage 48V Skin film module Output Voltage 31V Type Cooling Heating yearly load Kwh 10105.92 7788.97 yearly load index Kwh /m2·y 52.33 40.33 The area of unit A(1,2,3): 193.11㎡ Goals：Use solar energy Integrate solar energy technology into building strategies Model Refrigerating/Hea ting Capacity Operational Power COP Refrigerating Heating Refrigerating Heating kW kW kW kW GMY-Y252WM/A 25.2 27 5.93 5.95 4.25 GMY-Y280WM/A 28 31.5 7 7.3 4 GMY-Y335WM/A 33.5 37.5 8.41 9 3.98 GMY-Y504WM/A 50.4 54 11.86 11.9 4.25 GMY-Y560WM/A 56 63 14 14.6 4 GMY-Y615WM/A 61.5 69 15.41 16.3 3.99 GMY-Y670WM/A 67 75 16.82 18 3.98 PV Cell PV Energy Polycrystal silicon solar cellThin film solar cell for windows 789.4+101=890.4KW.h Total electricity in one apartment annually: DX-SAHP application If apply DX-SAHP, 30%-80% energy can be saved compared with other water heater systems. Conversion efficiency 17% Building integrated solar energy technologies