A heat pump evaporator using the falling film technique
Other conference contribution, 1984

This paper presents a new heat pump evaporator. The evaporator is a vertical shell-and-tube heat exchanger utilizing the falling film principle on both the shell and the tube side. The advantages with this arrangement are: - Dirty water can be used since the evaporator can be cleaned without shutting down the unit. - Low pressure drops. - High heat transfer coefficients. - Relatively low investment cost. Measurements of the heat transfer for the evaporation of pure R12 (no oil contamination) gave length average heat transfer coefficients in the range of 2000-5000 W/m2K depending on the heat flux.


Anders Åsblad

Department of Heat and Power Technology

Thore Berntsson

Department of Heat and Power Technology

2nd International Symposium on "The large scale applications of heat pumps", York, England: 25-27 September

Vol. 1984 B2 51-62

Subject Categories

Chemical Engineering

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