Effect of circuit arrangement on the performance of plate finned tube heat exchangers under dehumidifying conditions

Min Sheng Liu, Jin Sheng Leu, Chi-Chuan Wang, Vince C. Mei

研究成果: Conference contribution同行評審

2 引文 斯高帕斯(Scopus)

摘要

This study experimentally investigates the effect of circuitry on the performance of plate finned tube evaporators. Experiments were carried out with the heat exchangers having 1-circuit arrangements. A total of six circuitry were examined in this study, including two counter-cross, two parallel-cross, and two z-shape arrangements. The results showed that the counter-cross arrangement gives the best performance. However, heat conduction along the fins may offset the benefits of the counter-cross arrangement. In addition, the pressure drop of refrigerant-side increased with frontal velocities. Among the six 1-circuit arrangements, the parallel-cross flow circuit would produce a larger pressure drop than other arrangements. However, for G = 200 kg/m2·s and parallel flow, the pressure drops decrease with increase of the frontal velocity. The unusual characteristics are likely related to the flow pattern transition subjected to heat addition. The location of refrigerant inlet does not significantly affect the performance of heat exchangers.

原文English
主出版物標題American Society of Mechanical Engineers, Advanced Energy Systems Division (Publication) AES
發行者ASME
頁面627-633
頁數7
ISBN(列印)0791816508
出版狀態Published - 1 十二月 1999
事件Advanced Energy Systems Division - 1999 (The ASME International Mechanical Engineering Congress and Exposition) - Nashville, TN, USA
持續時間: 14 十一月 199919 十一月 1999

出版系列

名字American Society of Mechanical Engineers, Advanced Energy Systems Division (Publication) AES
39

Conference

ConferenceAdvanced Energy Systems Division - 1999 (The ASME International Mechanical Engineering Congress and Exposition)
城市Nashville, TN, USA
期間14/11/9919/11/99

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