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Heat transfer to evaporating refrigerants in two‐phase flow
Author(s) -
Lavin J. Gerard,
Young Edwin H.
Publication year - 1965
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690110629
Subject(s) - freon , refrigerant , mist , flow (mathematics) , flow boiling , thermodynamics , condenser (optics) , evaporation , boiling , mechanics , heat transfer , isothermal flow , nucleate boiling , two phase flow , chemistry , evaporator , materials science , open channel flow , heat transfer coefficient , heat exchanger , meteorology , physics , optics , light source
Flow regimes occurring during evaporation of Freon‐12 (dichlorodifluoromethane) and Freon‐22 (monochlorodifluoromethane) inside five tubes were investigated. Two flow models are proposed, one each for vertical and horizontal tube orientation. The limits of each flow regime were determined and heat transfer correlations obtained. The most significant flow regimes were found to be nucleate boiling, annular flow, and mist flow. A correlation for the transition between annular flow and mist flow was obtained.