Experimental Study on Evaporating Heat Transfer Characteristics of HFC-245fa
HUANG Xiaoyan,WANG Hua ,WANG Huitao
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(Faculty of Metallurgical and Energy Sources Engineering, Kunming University of Science and Technology, Kunming 650093，China)
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Published
2011-03-31
Issue Date
2011-03-31
Abstract
Convective boiling heat transfer characteristics of R245fa inside horizontal tube are investigated at various mass flow rates of hot water, working fluids and at various evaporation temperatures. The investigation results show that convective boiling heat transfer coefficients goes up with the increase of hot water and working fluid mass flow rate, but it is contrary to evaporation temperature. By comparisons of the experimental local heat transfer coefficients with that predicted by Chen correlation，LiuWinterton correlation and Shah correlation，it is concluded that deviations of these three correlations are 31.6%、6.3%、37.4% respectively. LiuWinterton correlation is more precise to predict convective boiling heat transfer coefficients of R245fa than Chen correlation and Shah correlation.
HUANG Xiaoyan,WANG Hua ,WANG Huitao.
Experimental Study on Evaporating Heat Transfer Characteristics of HFC-245fa . Journal of Wuhan University of Technology. 2011, 33(3): 67-71
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