Heat transfer of refrigerants boiling in small channels

UDC 621.56; 536.2

Heat transfer of refrigerants boiling in small channels

Khovalyg D.M., Baranenko A.V.


Abstract
The article describes the dynamics of a two-phase flow, shows mechanisms of heat transfer in boiling substances, presents analytical and semi-empiric correlations to calculate the heat transfer coefficient, and analyzes the results of experimental research on heat transfer when R134a is boiling in channels with the hydraulic diameter of 0,54 mm.

Keywords: micro-channel evaporator, two-phase flow, heat transfer coefficient, refrigerant.


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