Performance analysis of multistage thermoelectric cooler based on heat pipe dissipation
In order to study the effect of geometric structure on performance,a finite time thermody-namic model of multistage thermoelectric cooler based on heat pipe dissipation was established.Two performance evaluation indexes of module utilization factor and coordination performance factor were proposed.The effect of proportional coefficient of thermocouple and the number of stages on the per-formance of thermoelectric cooler unit was analyzed using numerical simulation methods.The varia-tion law of device performance index with working current with different geometric structures was ob-tained.The results show that the cooling temperature difference and cooling capacity of the six-level thermoelectric cooler with a proportional coefficient of 2 can reach 135.3 ℃ and 0.34 W respectively.The smaller proportional coefficient and working current can achieve the unification of cooling capacity and economic performance effectively.A prototype of a four-stage thermoelectric cooler based on heat pipe heat dissipation was designed and manufactured.The measured cold end temperatures are-76 ℃ and-69 ℃ when the ambient temperatures are 16 ℃ and 26 ℃ respectively.
thermoelectric codingmultistage thermoelectric coolerheat pipefinite time thermody-namicsperformance optimization
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