常见液体除湿剂池内核态沸腾换热特性

doi:10.3969/j.issn.0438-1157.2013.04.012

化工学报 ›› 2013, Vol. 64 ›› Issue (4): 1211-1216.DOI: 10.3969/j.issn.0438-1157.2013.04.012

常见液体除湿剂池内核态沸腾换热特性

徐惠斌, 宋新南, 葛凤华, 胡自成, 顾锋

江苏大学能源与动力工程学院,江苏镇江 212013

收稿日期:2012-07-17 修回日期:2012-09-11 出版日期:2013-04-05 发布日期:2013-04-05
通讯作者: 徐惠斌
作者简介:徐惠斌(1985—),男,硕士,讲师。
基金资助:
江苏高校优势学科建设工程项目;江苏省自然科学基金项目(BK2010325)。

Pool nucleate boiling heat transfer of conventional desiccant solutions

XU Huibin, SONG Xinnan, GE Fenghua, HU Zicheng, GU Feng

School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China

Received:2012-07-17 Revised:2012-09-11 Online:2013-04-05 Published:2013-04-05
Supported by:
supported by the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD) and the Natural Science Foundation of Jiangsu Province(BK2010325).

摘要/Abstract

摘要： 溶液除湿剂的沸腾式再生能够降低除湿空调对室外环境的依赖性,而溶液的沸腾特性的研究对沸腾再生器的设计有重要意义。针对3种常规除湿溶液及一种配方型除湿剂的池内核态沸腾特性展开实验研究。研究发现:3种溶液的沸腾温度均随着浓度的增加而升高;3种溶液的沸腾传热系数均低于水,并随浓度的增加而降低,但是当浓度增大到极限时,溶液中有小颗粒析出,其传热系数却提高。相近传质能力条件下,溴化锂溶液与氯化钙溶液的沸腾换热性能优于氯化锂溶液;在氯化锂溶液中添加一定量的氯化钙溶液能够优化氯化锂溶液的沸腾换热性能。

关键词: 除湿溶液, 池内核态沸腾, 沸腾温度, 传热系数, 表面张力

Abstract: Boiling regeneration of liquid desiccant solution can reduce the dependence of desiccant air-conditioning on the outdoor environment.The study on boiling characteristics of solution is significant for the design of boiling regenerators.In this study, the pool nucleate boiling characteristics of three conventional desiccant solutions and one formula desiccant agent were investigated experimentally.For the three desiccant solutions, the boiling temperature increases with the increase of concentration; their heat transfer coefficients are lower than that of water and decrease with as concentration increases, but when the concentration increases to a limit so that small particles precipitate, the heat transfer coefficient increases.For similar mass transfer capacity, the boiling heat transfer performance of lithium bromide solution and calcium chloride solution is superior to that of lithium chloride solution.With the addition of a certain amount of calcium chloride solution, the boiling heat transfer performance of lithium chloride solution can be optimized.

Key words: liquid desiccant solution, pool nucleate boiling, boiling temperature, heat transfer coefficient, surface tension

中图分类号:

TK124

徐惠斌, 宋新南, 葛凤华, 胡自成, 顾锋. 常见液体除湿剂池内核态沸腾换热特性[J]. 化工学报, 2013, 64(4): 1211-1216.

XU Huibin, SONG Xinnan, GE Fenghua, HU Zicheng, GU Feng. Pool nucleate boiling heat transfer of conventional desiccant solutions[J]. CIESC Journal, 2013, 64(4): 1211-1216.

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常见液体除湿剂池内核态沸腾换热特性

Pool nucleate boiling heat transfer of conventional desiccant solutions

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