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ISSN Online: 2377-424X

ISBN Print: 0-89116-559-2

International Heat Transfer Conference 8
August, 17-22, 1986, San Francisco, USA

THE EFFECT OF NONCONDENSIBLE GASES AND VENT FLOW RATE ON THE THERMAL PERFORMANCE OF SINGLE-PASS, "X"-SHELL CONDENSERS

Get access (open in a dialog) DOI: 10.1615/IHTC8.1130
pages 2703-2708

Sinopsis

The adverse impact of carbon dioxide and air on the thermal performance of condensers used in multistage flash (MSF) distillation plants is addressed in this paper. For normal operating conditions, the inlet gas flow rates are not sufficient to significantly affect the thermal performance. The heat duty for a typical condenser design is then determined for a broad range of entering noncondensible gas flow rates and vent flow rates. When the inlet steam/CO2 mass ratio falls below about 250, the thermal performance becomes strongly impacted by the noncondensible gases. When the vent flow rate approaches the minimum vapor/gas ratio based on the coolant temperature, a sharp drop of the thermal performance also occurs. However, the thermal performance is not sensitive to the vent flow rate when it is about two times greater than this minimum value.