制冷剂
空气源热泵
热力学
板式换热器
动态刮削表面换热器
传热
热交换器
微型热交换器
传热系数
材料科学
翼型
板翅式换热器
努塞尔数
机械
临界热流密度
物理
雷诺数
湍流
作者
Yutaka Ito,Naoya Inokura,Takao Nagasaki
出处
期刊:Journal of heat transfer
[ASME International]
日期:2014-05-21
卷期号:136 (8)
被引量:9
摘要
A light and compact heat exchange system was realized using two air-to-refrigerant airfoil heat exchangers and a recirculated heat transport refrigerant. Its heat transfer performance was experimentally investigated. Carbon dioxide or water was used as a refrigerant up to a pressure of 30 MPa. Heat transfer coefficients on the outer air-contact and inner refrigerant-contact surfaces were calculated using an inverse heat transfer method. Correlations were developed for the Nusselt numbers of carbon dioxide and water on the inner refrigerant-contact surface. Furthermore, we proposed a method to evaluate a correction factor corresponding to the thermal resistance of the airfoil heat exchanger.
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