Study On Wind Field Optimization Of Gas Engine Heat Pump System Driven By Photovoltaic

In recent years,clean energy has received more and more attention,and the number of large-scale photovoltaic power plants has been increasing.Photovoltaic panels are relatively fragile and vulnerable to strong wind damage.Photovoltaic power plants at home and abroad have been repeatedly damaged by hurricanes.The windshield is mainly used to reduce the wind load and protect the photovoltaic panel.The research on foreign windshields is relatively early,but there are few domestic researches,especially the windshields of photovoltaic/thermal(PV/T)systems.The installation of the windshield in the photovoltaic/thermal(PV/T)system not only can reduce the wind load of the photovoltaic support but also improve the photovoltaic/thermal(PV/T)utilization efficiency of the system,especially in the case of uneven energy supply in China.The solar solar photovoltaic/thermal(PV/T)integration integrated gas engine heat pump energy supply system(PV/T-GEHP)realizes the complementary advantages and jointly supplies energy for the building,which can change the energy structure of the traditional building.In this paper,the research on wind protection and application of solar photovoltaic/thermal and gas engine heat pump combined system(PV/T-GEHP)can improve the energy efficiency of the system,and has a good prospect and significance.The main contents are as follows:Firstly,Wind-proof research on PV/T-GEHP photovoltaic panels was carried out in this paper.Photovoltaic panels are mostly installed in the western regions where light intensity is abundant to seek maximum power generation efficiency.However,there are large wind speeds and windy weather in the western region.Strong winds can cause deformation or damage of the photovoltaic support,and wind sand will affect the solar radiation intensity and reduce power generation efficiency.The windshield and the windshield wall become the main way to prevent wind from the photovoltaic power station.The porosity of the wind deflector and the installation position of the windshield have a great influence on the windproof effect.In this chapter,numerical simulation is carried out to study the windproof effect of different porosity of the wind deflector.Secondly,the windshield of photovoltaic panels was studied by wind tunnel test and on-site measurement to study the windproof effect of windshields with different porosity.The results show that the experimental and simulation results are basically the same.Finally,the optimal porosity of the windshield is between 0.3 and 0.5.Experiments are carried out to study the windproof effect of windshields of different heights.The windshield height is better between H and 1.2H.Finally,this chapter studies the application of windshields in PVT-GEHP to study the effects of different ambient wind speeds on system performance.A brief introduction to the PVT-GEHP system.The windshield is installed in the PVT-GEHP system,and the effects of photoelectric efficiency,photothermal efficiency and photoelectric photothermal comprehensive efficiency on the system are measured at different wind speeds.