Prediction of two-phase condensation in horizontal tubes using probabilistic flow regime maps |
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| Authors: | EW Jassim TA Newell JC Chato |
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| Affiliation: | 1. Graduate School, Chonnam National University, San 96-1, Dunduk-Dong, Yeosu, Chonnam 550-749, Republic of Korea;2. Department of Refrigeration and Air Conditioning Engineering, Chonnam National University, San 96-1, Dunduk-Dong, Yeosu, Chonnam 550-749, Republic of Korea;3. Advanced R&D Team, Digital Appliances, Samsung Electronics, 416, Maetan 3-dong, Yeongtong-gu, Suwon, 443-742, Republic of Korea;1. Department of Energy Engineering, Zhejiang University, Hangzhou 310027, China;2. Department of Energy Sciences, Lund University, Box 118, Lund SE-22100, Sweden;3. State University of New York College at Buffalo, 1300 Elmwood Avenue, Buffalo, NY 14222, USA;4. State Key Laboratory of Multiphase Flow in Power Engineering of Xi’an Jiaotong University, 710049, China;5. Mechanical Engineering Department, University of Minnesota, 111 Church St. S.E., Minneapolis, MN 55455, USA;1. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;2. Beijing Key Laboratory of Space Thermal Control Technology, Beijing Institute of Spacecraft System Engineering, Beijing 100094, China |
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| Abstract: | A flow regime based condensation model is developed for refrigerants in single, smooth, horizontal tubes utilizing a generalized probabilistic two-phase flow map. Flow map time fraction information is used to provide a physically based weighting of heat transfer models developed for different flow regimes. The developed model is compared with other models in the literature, with experimentally obtained condensation data of R134a in 8.92 mm diameter tubes, and with data found in the literature for 3.14 mm, 7.04 mm, and 9.58 mm tubes with R11, R12, R134a, R22, R410A, and R32/R125 (60/40% by weight) refrigerants and a wide range of mass fluxes and qualities. |
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