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发表时间：2013-01-01

发表刊物：动力工程学报

期号：8

页面范围：633-636

ISSN号：1674-7607

摘要：To study the effects of flow resistance in large-scale seawater desalination facility on the performance itself, an experimental setup was built to simulate the steam flow process in a horizontal-tube falling film evaporator, so as to analyze the influence of saturated steam temperature and spray density on the flow resistance in the tube bundle. The new parameter(Reynolds number of spray water) was used to fit the experimental results, and subsequently a pressure drop coefficient formula was obtained for the steam flow across the tube bundle in rotated square arrangement. Results show that for a constant steam flow and spray density, the pressure drop reduces with rising saturated steam temperature, and the error of differential pressure is within ��15% between predicted value and actual measurement.

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