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Thermal characteristics of combined thermoelectric generator and refrigeration cycle

机译：组合式热电发电机的热特性和制冷循环

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摘要

A combined thermal system consisting of a thermoelectric generator and a refrigerator is considered and the effect of location of the thermoelectric generator, in the refrigeration cycle, on the performance characteristics of the combined system is investigated. The operating conditions and their influence on coefficient of performance of the combined system are examined through introducing the dimensionless parameters, such as λ(λ = Q_(HTE)/Q_H, where Q_(HTE) is heat transfer to the thermoelectric generator from the condenser, Q_H is the total heat transfer from the condenser to its ambient), temperature ratio (θ_L=T_L/ T_H, where T_L is the evaporator temperature and T_H is the condenser temperature), r_C (r_C = C_L/C_H, where C_L is the thermal capacitance due to heat transfer to evaporator and C_H, is the thermal capacitance due to heat rejected from the condenser), θ_W (θ_W=T_W/T_H, where T_W is the ambient temperature), θ_C (θ_C= T_C/ T_H, where T_C is the cold space temperature). It is found that the location of the thermoelectric generator in between the condenser and the evaporator decreases coefficient of performance of the combined system. Alternatively, the location of thermoelectric device in between the condenser and its ambient enhances coefficient of performance of the combined system. The operating parameters has significant effect on the performance characteristics of the combined system; in which case temperature ratio (θ_L) within the range of 0.68-0.70, r_C = 2.5, θ_W =0.85, and θ_C = 0.8 improve coefficient of performance of the combined system.
机译：考虑了由热电发电机和冰箱组成的组合式热力系统，并研究了制冷循环中热电式发电机的位置对组合式系统性能特性的影响。通过引入无量纲参数，例如λ（λ= Q_（HTE）/ Q_H，其中Q_（HTE）是从冷凝器传给热电发电机的热量，来检查操作条件及其对组合系统性能系数的影响。 ，Q_H是从冷凝器到周围环境的总热量传递），温度比（θ_L= T_L / T_H，其中T_L是蒸发器温度，T_H是冷凝器温度），r_C（r_C = C_L / C_H，其中C_L是传给蒸发器和C_H的热量引起的热容是冷凝器排出的热量引起的热容），θ_W（θ_W= T_W / T_H，其中T_W是环境温度），θ_C（θ_C= T_C / T_H，其中T_C是冷室温度）。发现热电发电机在冷凝器和蒸发器之间的位置降低了组合系统的性能系数。或者，将热电装置放置在冷凝器及其周围环境之间可提高组合系统的性能系数。操作参数对组合系统的性能特征有重要影响；在这种情况下，温度比（θ_L）在0.68-0.70，r_C = 2.5，θ_W= 0.85和θ_C= 0.8的范围内，可以改善组合系统的性能系数。

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