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Indexed by:Journal Papers

Date of Publication:2015-11-06

Journal:DESALINATION AND WATER TREATMENT

Included Journals:SCIE、Scopus

Volume:56

Issue:6

Page Number:1440-1446

ISSN No.:1944-3994

Key Words:Desalination; Horizontal-tube falling-film evaporator; Tube arrangement; Salinity

Abstract:An experimental platform for horizontal-tube falling-film evaporation was set up to measure heat transfer characteristics. Experiments were carried out to show how the heat transfer coefficient (HTC) was affected by different parameters including spray Reynolds number (Re), saturation temperature, salinity, and tube arrangement. The results revealed that the HTC increased first and then decreased with growth of Re, and the HTC of seawater decreased with increasing saturation temperature. The results also showed that the HTC of rotated square pitch was higher than triangular pitch, rotated triangular pitch, and square pitch, but the heat transfer capacity per unit volume of triangular pitch was the highest. Meanwhile, the HTC decreased during the increase of salinity.