Influence of variable heat load on the refrigerant distribution of a dual cold-plate system

Kai Shing Yang*, Kun Huang Yu, Chung Che Liu, Chi-Chuan Wang

*Corresponding author for this work

研究成果: Conference contribution同行評審

摘要

This study examines the refrigerant distribution of a dual cold plate system subject to the influence of heating load using a R-134a based vapor compression system with a nominal capacity ranging from 50-250 W. The cold plate is of identical configuration. Initially, test is performed under an equal heating load for each cold plate (70 W) which then gives rise to a uniform distribution and equal outlet superheat condition. For an unequal heating load, it is found that the distribution of mass flowrate subject to the influence of heating load is strongly related to the outlet states of the two cold plates. For the condition where one of the cold plate is in superheated state while the other is in saturated state, the mass flowrate for the fixed heating load is lower than that of smaller heating load, and the difference increases when the heating load gets smaller due to the influence of accelerational pressure drop. A maximum of 17% difference is seen at a loading ratio of 0.571 (40W/70W). For the condition where both outlet states of cold plate are at superheated states, the mass flowrate for the fixed heating load is marginally higher than that of the smaller heating load, and the difference is insensitive to the rise of heating load. For this situation, the effect of accelerational pressure is negligible, and it is mainly attributed to two-phase/single-phase distribution pertaining to the effect of heating load.

原文English
主出版物標題Proceedings of the 6th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM2008
頁面1431-1435
頁數5
版本PART B
DOIs
出版狀態Published - 1 十二月 2008
事件6th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM2008 - Darmstadt, Germany
持續時間: 23 六月 200825 六月 2008

出版系列

名字Proceedings of the 6th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM2008
號碼PART B

Conference

Conference6th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM2008
國家Germany
城市Darmstadt
期間23/06/0825/06/08

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