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Advanced Performance of Refrigeration Cycle with an Ejector for Re-circulation Enhanced Heat Transfer of Plate-type Evaporator and Target of Re-circulation Flow Rate for Advanced Performance
Author(s): 
Pages: 67-70
Year: Issue:  11
Journal: CHINA APPLIANCE TECHNOLOGY

Keyword:  传热系数干度再循环流量喷射器;
Abstract: 为了提高制冷循环的性能,我们提出了一个方法采用喷射器使冷媒蒸气再循环.这种方法通过增加蒸发器入口处冷媒的干度(x)和质量流量来增加沸腾传热系数(a).在本文中,我们用实验的方法研究了平板式蒸发器中a与x的关系,这种关系能够正常用于实际的盐水制冷装置.另外,我们研究了压降和x及质量流量△Pevp和a的比例关系.结果,得到了a和以及x的实验式.此外,通过这些实验式,我们计算出提高实际盐水制冷装置性能的再循环流量.因此,我们发现当再循环流量与制冷循环流量的比值在0.6-0.7时,与传统循环相比,盐水制冷装置的COP值可以提高5.2-7.2%.
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