- Volume 27 Issue 5
DOI QR Code
Study on Characteristics of Flow Boiling Heat Transfer in Multi channels
수평 다채널 관에서의 유동 비등 열전달 특성에 관한 연구
- CHOI, Yong-Seok (Korea Maritime and Ocean University) ;
- LIM, Tae-Woo (Korea Maritime and Ocean University)
- Received : 2015.07.27
- Accepted : 2015.09.14
- Published : 2015.10.31
Two-phase flow boiling heat transfer in micro-channels was experimently investigated. The test section consisted of 15 rectangular micro-channels with a depth of 0.45mm, width of 0.20mm. The experiments were performed for heat fluxes ranging from 5.6 to 46.1kW/m2 and mass fluxes from 150 to 450kg/m2s using FC-72 as the working fluid. According to the results, at the low heat flux region, heat transfer coefficient strongly depends on the heat flux, while heat transfer coefficient at the high heat flux region was independent on the heat flux. Four correlations were used to predict the heat transfer coefficient. The measured heat transfer coefficient was compared with four correlations. It was found that Kaew-On and Wongwises's correlation well predicted the measured data, within the MAE of 40.3%.
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