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An investigation of heat exchange during condensation of ammonia inside a pipe at low heat flow densities.
Author(s) : CHEPURNENKO V. P., LAGUTIN A. E., GOGOL N. I.
Summary
Heat transfer during condensation of superheated ammonia vapours in air-cooled condensers was studied experimentally. Tests were done for heat-flow densities (relative to the outer surface of the tube) varying from 25 to 750 watts/m2, ammonia mass velocities from 0.68 to 17.8 kg/m2.s, condensing pressures of 0.8 to 1.6 megapascals and tube length-diameter ratios of 75, 103 and 254. It was shown that the coefficient of heat transfer during ammonia condensation was 12 to 14% higher than that obtained by tubes cooled in water.
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Details
- Original title: An investigation of heat exchange during condensation of ammonia inside a pipe at low heat flow densities.
- Record ID : 1994-0135
- Languages: English
- Source: Energy Efficiency in Refrigeration and Global Warming Impact.
- Publication date: 1993/05/12
- Document available for consultation in the library of the IIR headquarters only.
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Indexing
- Themes: Mass transfer
- Keywords: Water-cooled exchanger; Heat transfer coefficient; Heat transfer; Ammonia; Air-cooled exchanger; Refrigerant; Condensation
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