The Performance Analysis And Experimental Study Of The Solar Energy Semiconductor Refrigerator System

The research in this paper is carried out with the target of studying one special semiconductor-related refrigerator, which meets cold storage requirement.First, this paper introduced the structure of solar energy semiconductor refrigerator system and its working principle, then analyzed semiconductor cooling system heat transfer using heat transfer mathematical knowledge and some mathematics tools, established thermoelectric freezer heat transfer equation, and discussed the effects form hot and cold side heat intensity to the performance of thermoelectric cooling. The results show that with the strengthen of specifit heat load, the performance of thermoelectric refrigeration gradually increased, while this cooling performance kept unchanged when the hot-side heat intensity increase to a certain value. Conclude from the result of simulation analysis,the best specifit heat load which exists in the semiconductor refrigeration can not indefinitely change the cooling performance of thermoelectric cooling devices by increasing the specifit heat load of heat end.Second, on the basis of thermoelectric cooling formula and photovoltaic system design formula, one sample Solar Semiconductor prototype refrigerator is designed, this paper also designed a prototype solar electricity complementary controller and temperature controller circuit board according to functional requirements, drew temperature control schematic diagram, and composed the control procedures.Finally, a test system of solar semiconductor refrigerator system is set up to test the actual running performance of solar energy semiconductor refrigerator system at different ambient temperature, From the results can get the following conclusions:The effect of solar semiconductor frige under different environmental temperatures; The lowest temperature can reach 10℃when the ambient temperature is 30℃, the box can reach the lowest temperature of 6℃, when the ambient temperature get 25℃, the inside large temperature difference is about 19℃. Prototype refrigeration coefficient can reach up to 0.28-0.31,when compared it with heat transfer numerical simulation results, the test shows that the theoretical analysis meets the experimental results, which offered relevant theoretical and experimental data to further study of this field.