| At present, the green building has become the mainstream standard of the new buildings in the developed countries in the world. In order to build a conservation-minded society, we develop the green building as we can, and our Country introduced many policies to encourage energy conservation and emission reduction projects, to promote green building development process. The ministry of finance and the ministry had jointly issued documents to advocate make grading subsidies to star buildings; By 2015, green building is not less than 20% of a new building; In addition, Guarantees for the development of green building, on January 1, 2015 the green building evaluation standard was executed.In order to reduce building energy consumption, the key point of green building development must be the air-conditioning energy conservation in the future. Compared with most of the electric air conditioning system in our country. The solar energy air conditioning can significantly reduce building energy consumption and reduce the greenhouse effect, the device and the building integration of solar energy utilization, It has advantages of energy conservation, environmental protection and season match. So the BIPVT (Building Integrated Photovoltaic Thermal)system should step up research and promotion.In this paper, response to the call of the green building.Based on BIPVT technology and hot-pressing ventilation type stack effect of ventilation theory, this paper designed a set of solar multi-function displacement air conditioning system of natural ventilation is referred to as "energy-saving air conditioning system". The system mainly include composed of solar wall, U-shaped ventilation passage of the wind system, composed of solar hot water loop, evaporative cooling, cold water loop of water systems, waste heat recovery system, PVT systems, the end of the air conditioning control systemIn this paper,we through the experimental research method to experiment parameters who affect photovoltaic solar-thermal Part in energy-saving air conditioning system.Through the changes in outdoor dry bulb temperature ta, the air layer between the supply air velocity v, the distance between glass cover and photovoltaic panels 1, supply air travel distance in the air layer between the S Etc.. Monitoring data, we can get that the photoelectric conversion efficiency is the highest when v is 16.5 m/s,l is 0.03 m and S has a baffle plate distance, at this circumstances, the photoelectric conversion efficiency increased by 7.09% on average in summer,and the photoelectric conversion efficiency increased by 2.72% on average in winter..Through theoretical analysis the effect of chimney effect in U type ventilation channel, study the state point analysis of air handling process, and give example to verify the feasibility of the application of energy-saving air conditioning system, finally, it can concluded that the air layer between the supply air velocity under the condition of 16.5 m/s,1 m2 air conditioning area need to provide cold heat photovoltaic cell area is 2.6 m2.Through experiment and theoretical analysis of driving force,thermal and moisture adjustment on the energy-saving air conditioning system, the photoelectric conversion efficiency characteristic research, optimizing matching and application design. It can solve the system energy consumption problem of exclusive use and combined the energy consumption of the air source heat pump system or water source heat pump system, and analyze the application performance, and get the overall performance and economic benefit of building air conditioning system, to improve the building hot wet environment. |
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