化工学报 ›› 2019, Vol. 70 ›› Issue (3): 874-882.DOI: 10.11949/j.issn.0438-1157.20180661
收稿日期:
2018-06-15
修回日期:
2018-11-16
出版日期:
2019-03-05
发布日期:
2019-03-05
通讯作者:
翁建华
作者简介:
<named-content content-type="corresp-name">张航</named-content>(1994—),男,硕士研究生,<email>467948121@qq.com</email>|翁建华(1968—),男,博士,副教授,<email>jhweng@126.com</email>
基金资助:
Hang ZHANG1(),Jianhua WENG1(),Xiaoyu CUI2
Received:
2018-06-15
Revised:
2018-11-16
Online:
2019-03-05
Published:
2019-03-05
Contact:
Jianhua WENG
摘要:
研究了10%(质量分数)LiCl吸湿性盐溶液作为工质的振荡热管传热特性。测试了在45%~90%充液率、10~100 W加热功率下振荡热管蒸发端温度及热阻的变化,并与去离子水工质的实验数据进行了对比。结果表明:在45%、55%的低充液率下,加热功率达到50 W以上时,LiCl溶液振荡热管的热阻明显比去离子水振荡热管低,能有效延迟烧干现象的发生。在62%的中等充液率,35W加热功率以上,LiCl溶液振荡热管的蒸发端温度较离子水振荡热管振荡频率快,幅度小且热阻低。在80%、90%的高充液率下,两种工质振荡热管的蒸发端温度曲线在平均温度、振荡频率、振荡幅度上都较为相似,热阻也比较接近。
中图分类号:
张航, 翁建华, 崔晓钰. 吸湿性盐溶液振荡热管的传热特性研究[J]. 化工学报, 2019, 70(3): 874-882.
Hang ZHANG, Jianhua WENG, Xiaoyu CUI. Heat transfer performance of pulsating heat pipe with hygroscopic salt solution[J]. CIESC Journal, 2019, 70(3): 874-882.
工质 | 沸点/℃ | 密度/(kg·m-3) | 热导率/(W·(m·℃) -1) | 动力黏度η×106/(Pa·s) | 表面张力σ×103/(N·m-1) |
---|---|---|---|---|---|
水 | 100.0 | 998 | 0.599 | 1.01 | 72.8 |
10%LiCl溶液 | 103.3 | 1053 | 0.573 | 2.63 | 75.2 |
表1 20℃标准大气压下工质的物性
Table 1 Physical properties of working fluids at standard atmospheric pressure and 20℃
工质 | 沸点/℃ | 密度/(kg·m-3) | 热导率/(W·(m·℃) -1) | 动力黏度η×106/(Pa·s) | 表面张力σ×103/(N·m-1) |
---|---|---|---|---|---|
水 | 100.0 | 998 | 0.599 | 1.01 | 72.8 |
10%LiCl溶液 | 103.3 | 1053 | 0.573 | 2.63 | 75.2 |
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