Boiling Heat Transfer and Pressure Drop of a Refrigerant Flowing Vertically Upward in Small Rectangular and Triangular Tubes
Boiling Heat Transfer and Pressure Drop of a Refrigerant Flowing Vertically Upward in Small Rectangular and Triangular Tubes
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DOI：
10.1080/01457632.2012.753576
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发表时间：
2013-03
影响因子：
2.3
通讯作者：
K. Enoki;K. Miyata;H. Mori;K. Kariya;Y. Hamamoto
中科院分区：
文献类型：
--
作者：
K. Enoki;K. Miyata;H. Mori;K. Kariya;Y. Hamamoto
为了开发用于空调系统的高性能细管或微通道换热器，对R410A在水力直径分别为1.04 mm和0.88 mm的矩形和三角形小铜管中垂直向上流动的流动沸腾传热和压降特性进行了实验研究。通过比较小圆管（内径1.00 mm）的实验数据，阐明了它们的特性。在矩形管和三角形管中，发现压降略低，传热比在圆管中好得多。
In the present study, experiments were performed to examine the characteristics of flow boiling heat transfer and pressure drop of a refrigerant R410A flowing vertically upward in small copper rectangular and triangular tubes with hydraulic diameters of 1.04 and 0.88 mm, respectively, for the development of a high-performance heat exchanger using small tubes or minichannels for air-conditioning systems. Their characteristics were clarified by comparing the previous experimental data of the small circular tube (1.00 mm internal diameter). In the rectangular and triangular tubes, the pressure drop was found to be slightly lower and the heat transfer was much better than in the circular tube.