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Compact Heat Exchangers and Enhancement Technology for the Process Industries - 2003

ISBN 打印: 978-1-56700-195-2

ENHANCED CONDENSATION OF CFC113 ON A HORIZONTAL WIRE-WRAPPED TUBE

Abstract

The paper reports new measurements for condensation of CFC113 (as a model refrigerant) on a horizontal, water-cooled, wire-wrapped tube. Care was taken to avoid error due to the presence of air in the vapour. The wire diameter and pitch of winding were systematically varied and heat-transfer measurements made for a range of coolant flow rates for each wire diameter and pitch. Data, in the form of heat flux and vapour-to-surface temperature difference have been obtained and used to calculate enhancement ratios (ratio of heat flux for wire-wrapped tube to that for a plain tube at the same vapour-to-surface temperature difference). The results are discussed in the light of earlier measurements and theory.
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