Investigation on the Ammonia Boiling Heat Transfer Coefficient in Plate Heat Exchangers

被引:2
作者
Ilie, Anica [1 ]
Girip, Alina [1 ]
Calota, Razvan [1 ]
Calin, Andreea [1 ]
机构
[1] Tech Univ Civil Engn Bucharest, Dept Thermodynam Sci, Fac Bldg Serv, 66 Pache Protopopescu Blvd, Bucharest 020396, Romania
关键词
ammonia; boiling; narrow spaces; plate heat exchanger; heat transfer coefficient; PRESSURE-DROP; FLOW; CONDENSATION; EVAPORATION; PERFORMANCE; MODEL;
D O I
10.3390/en15041503
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
This investigation aims to compare the experimental and theoretical ammonia boiling heat transfer coefficient in a plate heat exchanger (PHE). Measured data were gathered during functioning of a single stage vapor mechanical compression refrigeration system placed in the Thermal Systems Research Center of the Technical University of Civil Buildings Bucharest (TUCEB). Experimental values fall within the range of 1377-3050 W/m(2)K. Theoretical values were obtained from 12 correlations confirmed by the literature to date, developed for similar working conditions. The experimental values are close to the theoretical ones for Shah and Jokar correlations applied for a vapor quality of 0.5. The theoretical values are in the range of 1440-2076 W/m(2)K and 1558-2318 W/m(2)K, respectively. Shah correlation predicted 82.35% of all data within the +/- 30% error band at an MAE value of 14.23%, and Jokar et al. predicted 76.47% of all data within the +/- 30% error band with an MAE value of 17.7%.
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页数:16
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