Papers by Keyword: Solar

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Authors: Fei Shi, Bao Min Sun
Abstract: Two renewable and environmentally friendly energy sources, biomass and solar sources, are compounded. It is an integrated thermal power system that avoids their respective shortages based on the principle of cascade utilization of energy according to energy level. The PPSD, a computer aided design tool, models and simulates the whole system and provides important parameters for designers. The calculation results present that the biomass fuel consumption saving is about 35,904 tons if the hybrid solar thermal power system works 2200 hours in a year for the 48tph biomass boiler. The dropping of flue gas emission temperature to 123°Cincreases the boiler efficiency to 91.45%.
Authors: Xiao Lei Wang, Liang Yang, Pan Yan
Abstract: An engineering model of solar array can reflect the real-time output voltage and current, the maximum power point voltage, the maximum power point current and the maximum power point in any light intensity and any temperature of solar arrary. A simulation model is established in Matlab/Simulink and proved the engineering model correctly and reliability. Using the method of Perturbation and Observation (P&O) and Incremental Conductance (INC) track the maximum power point of a solar array under the reference standard of these output elements, and found out the pursuit gain around the reference standard oscillation and further to validate the model's reliability.
Authors: Michael Cameron, Noor A. Ahmed
Abstract: This paper presents a novel solar dish configuration which can attain a high concentration factor and also facilitate substantial on board energy storage while being low in projected manufacturing cost. This is due to minimizing the requirement for extreme rigidity and accuracy in the design, in turn through reducing the cantilever distance from dish to receiver. This is done by using a novel split / recombined focus arrangement, enabling rim angles up to 900, thus bringing the focal point much closer to the dish than standard dishes, which typically use approximately 450. This research is potentially significant for dish Concentrating Solar Power (CSP) in general and other emerging CSP systems that require high concentration factors.
Authors: M.Yaakob Yuhazri, A.M. Kamarul, A.H. Rahimah, Sihombing Haeryip, S.H. Yahaya
Abstract: This research is related to thermal efficient water heating system, specifically to improve the water heating system that exists nowadays. The goal of this research is to improve the current water heating system by using solar heat as the energy source to heat the water. The focus is to improve the thermal efficiency by adding different thermal boxes as the absorber bed. By implementing the black body and radiation concept, the air trapped in the box is heated. The trapped air then increases the collisions between the molecules and directly increases the temperature inside the box, higher than the outside environment. Based on a daytime experimental result revealed steel thermal box is better to be used for tropical weather like Malaysia.
Authors: Li Xi Zhang, Shi Yuan Gao, Qing Yuan He, He Fei Zhang
Abstract: It is studied the collected heat by collectors fixed on the outside wall of balconies when the shape and direction of balconies, and inclination angle of collectors are changed. Total heat collected by three walls of the rectangle balcony toward southeast or southwest is more than the one collected under other conditions. Total heat collected by rectangle balcony toward south would be increased when the inclination angles β of collectors are reduced. As β=70°, and the collectors were installed only on the south wall, to make water temperature above 60 °C in 150 L tank, extra energy needed is equivalent to 46.5 kg/a standard coal; if collectors were installed outside three walls of balcony, extra energy is not needed.
Authors: Hui Lan Huang, Gang Li, Xiang Chen, Zhong Yi Su
Abstract: Comparing with the common jet refrigeration system, a central air conditioner combined with solar ejector refrigeration system was proposed. The system characteristic was presented. It can improve the coefficient of the single solar system and solve operation problem for day-and-night, and can reduce the energy consumption of central air conditioner. A reasonable ejector to match with the central air conditioning is a main component in the system. The ejector in the solar refrigeration system is preliminary analyzed by the pneumatic function method. It will provide the important reference to improving the conditioner performance and system efficiency on air conditioning energy saving.
Authors: Ai Guo Jiang, Xiao Zhong Wang
Abstract: Solar water heater cannot supply hot water in cloudy and raining days alone. It in combination with air source heat pump water heater (ASHPWH) is a good choice. The performance of the two kinds of water heater is affected by the water temperature. It is important that the ASHPWH operate at a right temperature of the water. A solar water heater with 4m2 flat-plate collector assisted by a 1.5kW ASHPWH is studied in this paper. The results show that both the collector efficiency of the solar water heater and the COP of the ASHPWH system decreases as the water temperature increases. The highest and lowest collector efficiency of the solar water heater are 54.4% and 45.6% respectively. The COP of the ASHPWH system ranges from 6.48 to 2.61 as the water temperature increases. Operating sequences of these two kinds of water heater affect solar energy utilization ratio and the power input of the ASHPWH system.
Authors: Shi Jun He, Yu Zhang, Yuan Yu
Abstract: Computer implementation of the models in solar energy engineering is very important. This paper summarized the models and realized them by ArcGIS/MATLAB/ SQL Server/ VC++ mixed programming. The experimental results show that it is feasible to apply mixed programming in solar energy engineering. The storage and management of solar energy data are of good performance. The implementation brings convenience for the solar energy reasonably utilization. Further, it puts forward a new direction for solar energy data analysis and calculation.
Authors: Yi Bing Xue, Yi Rui Lan
Abstract: Shandong Jianzhu University student apartments by the use of ecological building envelope insulation, solar heating, building ventilation, photovoltaic, solar hot water systems, building technology made summarization of the future for the construction of ecological building cold and cold regions of the country to provide a good idea.
Authors: Ho Chih Cheng, Min Chie Chiu
Abstract: Pollution and climate change due to the use of fossil fuel can no longer be denied, and this coupled with a waning supply of oil leads one to inevitably conclude that a clean, sustainable energy source is needed. That source is solar energy, the cleanest, safest, and most environmentally friendly energy source we have. In this paper, a photovoltaic (PV) solar energy system is used to generate electricity that will recharge a battery (DC 12V). The portable recharged battery will serve as the energy source for an electric vehicle. Moreover, in order to reduce manpower, a PC-based remote electrical monitoring technique used in the battery’s recharged system will be established via a TCP/IP network. Consequently, a PV solar panel with a 30 Watt capacity used to generate electricity using a PC-based monitoring system is exemplified.
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