Steam condensation in parallel channels with nonuniform heat removal in different zones of heat-exchange surface
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- 作者：Oleg O. Milman ; D.B. Spalding ; Vladimir A. Fedorov
- 关键词：Condensation ; Pressure drop ; Air flow ; Temperature difference
- 刊名：International Journal of Heat and Mass Transfer
- 出版年：2012
- 出版时间：October, 2012
- 年：2012
- 卷：55
- 期：21-22
- 页码：6054-6059
- 全文大小：1279 K
文摘
Insufficiently effective operation of inlet tubes in the coolant flow direction during steam condensation in parallel channels with nonuniform heat removal (e.g., in air-cooled steam condensers) has been recognized. It has been revealed by the calculations and the experiments that up to 30 % of the inlet tube rows heat-exchange surface area do not participate in heat transfer. The tests conducted at the full-scale condensing units have corroborated this fact. This effect must be accounted for when designing and arranging corresponding cross-flow heat exchangers with cooling condensation.