Research On The Law Of Energy Conversion Of A Novel Glass Curtain Wall

The increasing depletion of traditional energy sources has caused humans to turn their development goals to new energy sources.Solar energy has emerged in the research of new energy due to its wide distribution and environmental protection.The development of the times has led to increasing building energy consumption.BIPV systems provide a new way for mankind to achieve energy conservation and environmental protection.In the integrated building photovoltaic system,not only must make full use of solar energy,but also consider indoor lighting.The new glass curtain wall system proposed in this paper is one of the ideal devices to achieve these requirements.The new glass curtain wall system uses a hollow compound parabolic concentrator,and the hollow part is filled with liquid medium.First,the optical simulation method is used to complete the optical path simulation of a single CPC at different incident angles;the energy flow density of the receiver at the bottom of the CPC under different incident angles is also studied.Finally,the changes in the optical performance of the new glass curtain wall under different incident angles are obtained.According to the working principle of the system,it is found that there are many factors affecting the thermal performance of the system.In order to explore the influence law of different factors on the thermal performance of the system,the orthogonal method is used to design the computational fluid simulation conditions.Through the general analysis and variance analysis of the orthogonal method,the influence law of changes in the bottom energy flow density,inlet air velocity,inlet air temperature,inlet water velocity,inlet water temperature and other factors on the thermal performance of the system is summarized.In the actual weather light control,power generation,thermal performance test.The results show that at noon of direct sunlight,the transmittance of the new glass curtain wall system is very low,and its minimum value is 22%.At this time,the light is mostly concentrated on the solar cells at the bottom of the concentrator to generate electricity and heat,and the power generation efficiency of the system is 4.6%,and the thermal efficiency is 19%.In the morning and afternoon,the transmittance can be more than 60%,and most of the sunlight can enter the room through the new glass curtain wall system to meet the lighting needs.Therefore,this new type of glass curtain wall can effectively alleviate the indoor overheating and dazzling problems caused by direct sunlight at noon,and use excess solar energy to obtain additional electrical and thermal energy,which improves the energy utilization rate of the system and effectively reduces the building energy consumption.Therefore,it provides a certain reference value for the field of BIPV.