新型压缩/喷射冰箱混合制冷循环理论及实验研究

Experimental and Theoretical Study of a New Compression/Injection Hybrid Refrigeration Cycle

针对双门冰箱冷冻室及冷藏室温差较大的特点,提出了一种新型压缩/喷射混合制冷循环,并加工制造了新循环冰箱,降低了冷藏室与蒸发器之间由于温差过大造成的有效能损失。以R12以及它的可能替代物R152a、R134a、R22/R152a等作为制冷剂的模拟计算结果表明:新循环性能系数COP及容积制冷量较原蒸汽压缩循环有明显提高。实验结果表明:新循环冰箱,具有明显的节能效果。

In accordance with the large temperature difference between the fresh food section and the freezer section, a new compression/injection hybrid cycle for household refrigerators is proposed. With the new cycle the loss of available energy caused by the excess temperature difference between the evaporator and the fresh section can be decreased. According to the results of simulation of the new cycle using R12 and the alternatives R152a, R134a, R22/R152a as refrigerants, a significant profit in COP and volumetric refrigeration capacity relative to the simple vapor-compression cycle is obtained. An experimental refrigerator with the new cycle using CFC12 as refrigerant has operated more than four months, the experimental results show that the refrigerator with the new cycle consumes less energy.