Flow Boiling Heat Transfer Coefficients of R-134a in a Microfin Tube

This paper presents results of an experimental study for forced convection evaporative heat transfer coefficients of R-134a (a replacement for R-12), inside a horizontal microfin tube. Data are reported as a function of parametric values of mass flux, quality, and heat flux in the test section. Results include heat transfer coefficients for the low mass flux levels typically encountered in household refrigerators and certain small-scale commercial evaporators