Research On Solar Photovoltaic Semiconductor Air Conditioning System

As a brand new and renewable green cleaning system,solar photovoltaic semiconductor air-conditioning system,which effectively reduces the use of fossil fuels and the emission of greenhouse gases,is almost zero energy consumption and zero pollution.The system is also good to take into account two important problems of energy and environment,thus,it has great potential for development.The working principle of solar photovoltaic semiconductor air conditioning is to provide electric power for the system by solar photovoltaic panels.According to the Peltier effect,the electrified semiconductor switches the cooling and heating modes by changing the current direction in order to realize the refrigeration or heating in the room.Due to it is difficult to make breakthroughs in innovation research on semiconductor materials at this stage.Therefore,the purpose of improving the efficiency of semiconductor air conditioning is achieved through three ways of design and optimization.The first is to design and optimize the semiconductor module,then the design and optimization of the heat dissipation system,the third is to improve the working environment of the system.In this paper,ANSYS thermal analysis software was used to simulate and analyze the semiconductor radiator,so as to optimize its geometric parameters.Then,the influence of geometrical parameters of different radiators on their performance was compared and analyzed,and the conclusions drawn from the simulation were verified by experiments.Finally,three types of photovoltaic semiconductor air conditioning prototype were designed and built.The main research work of this paper was as follows:(1)Through the finite element numerical analysis of the semiconductor thermoelectric heat transfer process,the geometric parameters of the radiator were changed under the condition that the total volume of the radiator was invariable.The optimum geometric structure of radiator was obtained by analyzing the thickness of radiator,the length,the thickness and the quantity of the fin,and then the maximum heat dissipation efficiency was achieved.The aim was to provide the theoretical basis for improving the efficiency of semiconductor air conditioning.(2)A solar photovoltaic semiconductor air conditioning system was designed and built,which adopted a dual-fan forced convection heat dissipation system.By changing the working voltage of the semiconductor and the fan,respectively,under the two conditions of winter environment(temperature 5,humidity 20%)and summer environment(temperature 35,humidity 60%).The optimum cooling efficiency and heating efficiency of solar photovoltaic semiconductor air conditioning system under different factors were compared.(3)A water-cooled solar photovoltaic semiconductor air conditioning prototype was designed and built,and the circulating water pump cooling system was adopted.In the condition that the constant voltage of the solar photovoltaic semiconductor air conditioning and the fan remain unchanged respectively,the rules of the cooling and heating efficiency of the system under different flow rates were compared by changing the pump voltage to adjust flow rate of the pump.The results showed that the cooling efficiency of the air-conditioner prototype without water drain and fan device was reduced by 17.7%.Water drain and fan device obviously improved the heat transfer characteristics of the system,and the cop of the system was increased by 28.5%.(4)the characteristics of solar photovoltaic monolithic semiconductor air conditioning system were studied,which laid a foundation for the assembly of multi-chip semiconductor air conditioning system.