Refrigerant forced-convection condensation inside horizontal tubes
Author(s)Bae, Soonhoon; Maulbetsch, John S.; Rohsenow, Warren M.
Massachusetts Institute of Technology. Division of Sponsored Research.
Massachusetts Institute of Technology. Dept. of Mechanical Engineering.
Massachusetts Institute of Technology. Heat Transfer Laboratory.
MetadataShow full item record
High vapor velocity condensation inside a tube was studied theoretically. The heat transfer coefficients were calculated by the momentum and heat transfer analogy. The Von Karman universal velocity distribution was applied to the condensate flow. Pressure drop was calculated by the Lockhart-Martinelli method and the Zivi void fraction equation. Experimental data was obtained for the flow rate from 240,000 to 485,000 lbm/ft2 hr. R-22 was condensed in a 0.493" I.D. 18 ft. long test section. The measured heat transfer coefficients agreed with the prediction within 10% except a few points in the very low quality region.
Cambridge, Mass. : M.I.T. Heat Transfer Laboratory, 
Technical report (Massachusetts Institute of Technology, Heat Transfer Laboratory) ; no. 64.
Tubes -- Fluid dynamics., Heat -- Transmission., Condensation., Refrigerants.