Engineering Design Optimization Of Typical Roof Distributed Photovoltaic Power Station And Study On Its Indoor Thermal Environmental Impact

The generation efficiency of distributed photovoltaic power plants is an important indicator of its economic benefits.There are many factors affecting the generation efficiency of photovoltaic power plants,among which backplane temperature is one of the important factors.Through engineering design optimization,the power generation efficiency can be improved,and then the economic benefits of photovoltaic power stations can be increased,and higher economic benefits can be created for owners.At the same time,the layout of photovoltaic modules can improve the indoor thermal comfort of industrial buildings and reduce the air conditioning load.It is also one of the important means to create green industrial buildings.The engineering design of photovoltaic power plant is of great significance to the cooling of the backplane of the module,but in practical engineering,the related problems are seldom considered.In this paper,the distributed photovoltaic power station with color steel tile roof in Zhengzhou area is taken as the research object.Through theoretical analysis,numerical simulation and experimental verification,the layout scheme,layout form and quantitative analysis of indoor thermal environmental impact of photovoltaic modules in the design of solar photovoltaic power station are studied.In order to provide design basis for the engineering design of distributed photovoltaic power station.Through the study,the following conclusions are drawn:(1)By comparing the parallel photovoltaic module layout scheme with the herringbone photovoltaic module layout scheme,we can see that the herringbone layout scheme has the largest power generation among the three layout schemes.At the same time,this kind of component arrangement can increase the installed capacity of roof and improve the utilization ratio of roof.(2)For the parallel layout scheme of two rows with one channel,the spacing,installation height and layout inclination of photovoltaic modules are studied.The results show that the optimum distance between corridors is 500 mm,the optimum installation height is 900 mm,and the installation inclination of the maximum power generation is 37 degrees,which is higher than the installation inclination of the maximum solar incident radiation.(3)For the layout of herringbone photovoltaic modules,the optimum top spacing is 400 mm.(4)For this research object,when the roof is equipped with photovoltaic modules,the indoor temperature in summer can be reduced by 4.94 degrees C,the indoor temperature in winter can be increased by 1.2 degrees C,and the energy consumption of air conditioning in winter and summer can be reduced by 3W/m~2 and 13.08 W/m~2,respectively,which has better thermal insulation and sunshade effect,and is conducive to creating better indoor thermal comfort and reducing air conditioning load,realizing energy saving of industrial buildings and improving indoor thermal comfort.