Abstract
The purpose of this paper is to investigate the characteristics of direcct-contact condensation heat transfer. The jet of Freon vapor (R11 and R113) was injected against a uniform water stream in the vertical tube of inside diameter D=30mm. The temperature distribution in the vertical direction was measured for water flow rate Qw=5∼20×-6m3/s, Freon liquid flow rate Qf=0∼2.17×10-6m3/s and temperature difference ΔT=Ts-Tw=5∼35K. The results of experiment on the heat-transfer characteristics clarified the relation between the height of effective heat-exchange region, H and the ratio of heat-exchange quantity to its critical value, φ/φc.
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