| Solar photovoltaic light and heat and building integration can effectively reduce building materials and improve energy efficiency.At present,the solar water heating system and its development in China have been applied to practical research.Through the construction of existing solar energy projects,many projects have been found to have some problems to be improved.In the process of use,comprehensive efficiency is an important indicator of solar energy systems.There are many influencing factors.One of the most typical factors is the higher the component temperature and the lower the energy conversion efficiency.This article focuses on this influencing factor and proposes an optimization scheme to improve the efficiency of the system.The solar energy project needs to be implemented in the area with large solar radiation.The climate in the south(Guinan)area with high temperature in summer and long sunshine time is suitable for building solar energy system.The integration of photovoltaic light heating system and building is the component that integrates photovoltaic light and heat.Combined with architecture.It has two combinations:one is to directly place the solar system on the roof,and it is not necessary to take it into account when designing the structure.The system and the building can be said to be two relatively independent parts.The installation of the solar system will have a certain impact on the aesthetics of the house;there is also a part of the building material that integrates solar energy on the roof,which is equivalent to the roof,and also has the function of roof shading,which also affects the form of the building,solar system.The design form should also take into account the high degree of integration.Integrating solar systems in the South with building solar resources to fully integrate solar technology with architectural aesthetics.At the same time,the total conversion efficiency of using solar energy is relatively high.The first part of this paper mainly introduces the background and significance of the topic selection,and summarizes the development prospects of solar photovoltaic light and heat and building integration from the development status at home and abroad.The second part starts from the utilization of solar energy,and explains the principle of photovoltaic utilization,photothermal utilization and comprehensive utilization of photovoltaic light and heat according to the utilization mode of solar energy,paving the way for the design below.The third part designs the integrated building from the perspective of relevant normative standards and design principles,climate characteristics,azimuth and inclination angles of the south(Guinan)area,and roof installation methods,in order to maximize energy utilization.The fourth part selects the solar cell,and then designs the structure of the photovoltaic photothermal system to perfectly combine the system structure with the performance of the solar cell.The fifth part is the core part of this paper.PLC is used as the main controller.The temperature acquisition equipment uses the RC oscillator circuit with the single-chip microcomputer as the control core to input the temperature signal.Then,through the force control software design monitoring interface,the designed system is tested.verification.This study proposes the above two optimization schemes for temperature,which affects energy conversion efficiency.Combining the characteristics of the southern(Guinan)region to compare these two options,the use of water circulation system to reduce the surface temperature of photovoltaic components to improve the efficiency of the system,so that the solar energy system to achieve maximum energy conversion.In this study,the small-scale experiment based on PLC is used to simulate the opening of the water valve to achieve simple control of the temperature of the panel,and to maintain the temperature control within a reasonable set value to verify the feasibility of the water circulation cooling system. |
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