膜科学与技术

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Comparison of heat-transfer coefficient for seawater with softening pretreatment and seawater

Authors： YANG Yanming, MA Jinghuan*,LIU Ying

Units： School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300160

KeyWords： seawater desalination; softening pretreatment; heat-transfer coefficient; horizontal tube falling film

ClassificationCode：TQ021.3

year,volume(issue):pagination： 2013,33(4):78-81

Abstract：

In this paper, seawater with simple pretreatment and seawater with softening pretreatment were used to horizontal tube falling film evaporation experiments respectively. Experimental results showed that these two heat-transfer coefficients gradually increased with boiling point ,and the heat-transfer coefficient of seawater with softening pretreatment was slightly higher than seawater’s when the boiling point was below 70℃; The heat-transfer coefficient of seawater with softening pretreatment was much higher than the seawater’s when the boiling point was above 70 ℃. In a word, seawater with softening pretreatment could achieve high heat-transfer coefficient at high temperatures. The experiment provided the experimental and designed base for the combination of softening pretreatment and multiple effect evaporation system.

Funds：

全国中小企业创新基金项目(NO.2011-BK120026)资助

AuthorIntro：

杨雁鸣（1988~），女，山西长治人，硕士研究生，从事热膜耦合海水淡化综合利用技术与高含盐废水处理。 E-mail: yanming8871@163.com

Reference：

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