热电过冷器工作电压优化的试验研究

Experimental research on voltage optimization of thermoelectric subcooler

本文设计了一款基于热电原理的过冷装置,并将其运用到家用空调系统当中,试验研究了最小制冷、额定制冷和最大制冷三种工况下,热电过冷装置在电压为6、8、10、12和14V工作时,其制冷量和能效比的变化;并对运行过冷装置前后空调器系统的性能进行试验对比。结果表明:三种工况下,热电过冷装置在工作电压为12V时,其制冷量达到最大,为95、85、94W,能效比分别为0.86、0.77、0.85,此时空调器的过冷度分别为2.6、2.4、2℃,COP则分别提高了3.4%、3.7%、4.7%。

The air conditioner with a thermoelectric subcooler was designed and fabricated, based on the principle of thermoelectric refrigeration to increase the subcooling degree. Under the the operating voltage value of 6, 8, 10, 12, 14V, the thermoelectric subcooler＇ s refrigeration capacities and energy efficiency ratio were researched in the three conditions of the minimum cooling operation condition, the rated cooling operation condition and the maximum cooling operation condition. The performance of air conditioner was tested and compared before and after equipped with the subcooler in the three operation conditions. The results showed that： TE subcooler achieves the biggest refrigeration capacity state when the operating voltage value is 12V. The TE subcooler＇ s refrigeration capacities are 94, 85, 95W, respectively, meanwhile, energy efficiency ratios are 0.86, 0.77, 0.85, respectively, in the three operation conditions. The subcooling degrees of the air - conditioner with thermoelectric subeooler are improved by 2.3, 1.9, 1.5℃ , respectively. And the COPs of the air conditioner are increased 3.4% , 3.7% and 4.7% in the three cooling operation conditions.