Theoretical Analysis And Experimental Study On Most Superior State And Radiation Intensity Of Semiconductor Refrigeration

The semiconductor refrigeration have had a history of more than 150 years, Until the 1950s, the semiconductor refrigeration obtained the further developing because of discovering good performance semiconductor material. The semiconductor refrigeration has much unique superiorities:simple system, easy control, refrigerate fast and no refrigerant, no mechanical drive, simple regulation and so on. Along with the development of science and technology, the semiconductor refrigeration even is taken more seriously.This article had carried on the base of the core part of semiconductor refrigeration system first, and established the semiconductor refrigeration experiment system and the corresponding measurement system. It had analyzed the primary factors which influence performance of semiconductor refrigeration, namely the optimum condition and hot-side radiation intensity. It had analyzed the influence of most superior state and the hot-side radiation intensity to the performance of semiconductor refrigeration, through the theory and the experimental study. The semiconductor refrigeration has two kinds of limit states:the biggest refrigeration quantity state and the biggest refrigeration coefficient state. Each traditional state has the advantage respectively. Between the two states, there is a superior state, which enables to have both a bigger refrigeration quantity and smaller power dissipation. We called it most superior state. It had analyzed most superior state of the semiconductor theoretically and deduced the optimum electric current formula under most superior state on this problem, then selected eight groups of states to carry on the experiment between two kinds of limit states, and through contrastive analysis selected most superior state. But the hot-side radiation intensity is another important factor of the semiconductor refrigeration performance. This article first selected three radiation ways:the air-cooled radiation, the heat pipe radiation as well as the water-cooled radiation, and then conducted the experimental study to the three radiation ways, obtaining conclusion that the effect of refrigeration was the best under the water-cooled radiation. Then under the best radiation, the water-cooled radiation, it conducted experimental study of the radiation intensity, changing the radiation intensity by changing the hot end water flow, and selected six groups of radiation intensities to carry on the experiment, and discovered the influence rule of hot-side radiation intensity to the performance of semiconductor refrigeration. Finally it preliminarily designed the small semiconductor refrigeration box, selecting the water-cooled radiation under most superior state.This article conducted the research under present protection environment's situation to the semiconductor refrigeration system, and looking for most superior state of the semiconductor refrigeration, and caused it to work under most superior state of the semiconductor refrigeration, in order to cut its power and cost, thus enabled the combined earnings to achieve most superior state, and enhanced the refrigeration performance of the semiconductor refrigerator. Simultaneously it has analyzed the influence rule of the hot-side radiation intensity to. the performance of. the semiconductor refrigeration, and optimized the hot-side radiation system. It provides a perfect guiding sense for the semiconductor refrigeration system.