Heat transfer performance of pulsating heat pipes with water-acetone mixtures

被引：0

作者：

Zhu, Yue ^{[1
]}

Cui, Xiaoyu ^{[1
]}

Han, Hua ^{[1
]}

Sun, Shende ^{[1
]}

Li, Zhihua ^{[1
]}

机构：

[1] School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai

来源：

Huagong Xuebao/CIESC Journal | 2014年 / 65卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Filling ratio; Heat transfer; Phase change; Pulsating heat pipe; Solution;

D O I：

10.3969/j.issn.0438-1157.2014.08.013

中图分类号：

学科分类号：

摘要：

Experiments of pulsating heat pipes (PHP) were conducted, with water, acetone and water/acetone binary mixtures at different ratios (13:1, 4:1, 1:1, 1:4, 1:13) under various filling ratios (35%-70%) and heat inputs (10-100 W). The experimental results were analyzed with the feature of physical property and phase change for mixture. The results show that because of lower boiling point, specific heat and latent heat for evaporation, the mixture solution requires lower heating power to initial PHP than water. At low filling ratios, compared to mixtures except that with relatively low acetone concentration (e. g. water/acetone 13:1), pure working fluids are relatively easier to dry out in PHP. With the heat input of 50 W, PHPs with pure working fluid are dried, while those with mixtures maintain relatively low thermal resistance. The mixture with a little water (e. g. water/acetone 1:13) can significantly improve the dry state in PHP, while that with a little acetone (e. g. water/acetone 13:1) does not significantly improve the dry situation. At high filling ratios, heat transfer performance of PHP with pure working fluids are better than mixtures. In the range from 35 W to 50 W, the PHPs with pure working fluids present lower thermal resistance. At higher heat input (50-100 W), the PHP with water has lower thermal resistance compared to that with mixture. The study on heat transfer performance of PHP provides references for further research on the heat transfer mechanism of PHP and establishment of theoretical models on heat transfer characteristics. © All Rights Reserved.

引用

页码：2940 / 2947

页数：7

共 20 条

[1] Akachi H., Structure of a heat pipe, (1990)
[2] Gi K., Sato F., Maezawa S., Flow visualization experiment on oscillating heat pipe, 11th International Heat Pipe Conference Japan, pp. 659-660, (1999)
[3] Cao Y., Gao M., Beam J.E., Donovan B., Experiments and analyses of flat miniature heat pipes , Journal of Thermophysics and Heat Transfer, 11, 3, pp. 158-164, (1997)
[4] Long Z., Zhang P., Heat transfer performance of cryogenic heat pipe with binary mixture working fluid , CIESC Journal, 63, S1, pp. 69-74, (2012)
[5] Long Z., Zhang P., Heat transfer characteristics of thermosyphon with N<sub>2</sub>-Ar binary mixture working fluid , International Journal of Heat and Mass Transfer, 63, pp. 204-215, (2013)
[6] Armijo K.M., Carey P., An analytical and experimental study of heat pipe performance with a working fluid exhibiting strong concentration Marangoni effects , International Journal of Heat and Mass Transfer, 64, pp. 70-78, (2013)
[7] Nuntaphan A., Tiansuwan J., Kiatsiriroat T., Enhancement of heat transfer in thermosyphon air preheater at high temperature with binary working fluid: a case study of TEG-water , Applied Thermal Engineering, 22, 3, pp. 251-266, (2002)
[8] Raffaele S., di Nicola F., Rainondo F., Yoshiyuki A., Heat pipes with binary mixtures and inverse Marangoni effects for microgravity application , Acta Astronautica, 61, 1-6, pp. 16-26, (2007)
[9] Chu H., Xie G., Liu L., Discussion on thermodynamic properties of binary mixture as working fluid for pulsating heat pipe , Refrigeration and Air-Conditioning, 10, 6, pp. 21-25, (2012)
[10] Chu H., Xie G., Liu L., Discussion on thermodynamic properties of binary mixture adaptation of pulsating heat pipe , Refrigeration and Air-Conditioning, 25, 3, pp. 216-219, (2011)

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