Date of Publication:2013-01-01

Journal:化工学报

Affiliation of Author(s):能源与动力学院

Issue:3

Page Number:886-890

ISSN No.:0438-1157

Abstract:An experiment investigation of steam flow resistance across horizontal falling film tube bundle was carried out. Experiments were performed to simulate the flow process in a large horizontal falling film evaporator of MED desalination plant under the pressure from 12 kPa to 31 kPa and at the corresponding saturated steam temperature from 50°C to 70°C respectively. The results indicated that pressure drop of steam flowing across tube bundle with falling film was far greater than that through a plain tube bundle. Pressure drop coefficient not only was affected by vapor Reynolds number but also changed significantly with spray Reynolds number. From the experimental results a flow resistance correlation for steam flowing across horizontal tube bundle with falling film was proposed. © All Rights Reserved.

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