Experimental investigation on characteristics of R290 boiling heat transfer in horizontal micro-fin tubes with small diameter

被引：0

作者：

Wang L. ^{[1
]}

Dai Y. ^{[1
]}

Tian S. ^{[1
]}

Lin Q. ^{[1
]}

机构：

[1] School of Mechanical and Electrical Engineering, Nanchang University, Nanchang, 330031, Jiangxi

来源：

Huagong Xuebao/CIESC Journal | 2020年 / 71卷 / 03期

关键词：

Boiling; Flow; Heat transfer; Micro-fin tube; Phase change; Prediction; R290;

D O I：

10.11949/0438-1157.20190646

中图分类号：

学科分类号：

摘要：

The boiling heat transfer characteristics of R290 in horizontal micro-fin copper tubes with inner diameter of 4mm and 6mm were investigated experimentally. And the effects of mass flux(100-250 kg•m-2•s-1),saturation temperature(7-11℃),heat flux(13-24 kW•m-2),tube type and vapor quality(0.1-0.9) on the boiling heat transfer coefficient and critical quality were analyzed.The results showed that the boiling heat transfer coefficient increased with the increase of mass flux or saturation temperature. The boiling heat transfer coefficient increased at first but then decreased as the increase of heat flux. And the results also showed that critical quality decreased with the increase of heat flux. Comparing to the smooth tube, micro-fin had a larger critical quality. With the increase of vapor quality accompanied by the heat absorbing boiling process of R290, the boiling heat transfer coefficient increased at first but then decreased. Six commonly used correlations of boiling heat transfer were used to predict the boiling heat transfer coefficient of R290. Comparing with the experimental results, the prediction accuracy of Fang et al. and Choi et al. was higher. © All Right Reserved.

引用

页码：1026 / 1034

页数：8

共 32 条

[1]

Choudhari C.S., Sapali S.N., Performance investigation of natural refrigerant R290 as a substitute to R22 in refrigeration systems, Energy Procedia, 109, pp. 346-352, (2017)

[2]

Parikshit A.L., Choudhari C.S., Perspective of environmental friendly refrigeration propane(R290), International Journal of Innovative Research in Science and Engineering, 2, 3, pp. 748-753, (2016)

[3]

Liang J.R., Li T.X., Detailed dynamic refrigerant migration characteristics in room air-conditioner with R290, International Journal of Refrigeration, 88, pp. 108-116, (2017)

[4]

Teddy I.O., Oluseyi O.A., Thermal performance and energy consumption analyses of R290 and R22 refrigerants in air-conditioning system, Materials Science and Engineering, 43, pp. 1-9, (2018)

[5]

Vishakha S.J., Ashok J.K., Experimental performance study of R290 as an alternative to R22 refrigerant in a window air conditioner, Materials Science and Engineering, 13, pp. 1-8, (2018)

[6]

Hui L., Hong X., Study on Performances of refrigeration-type compressed-air dryers using environmentally-friendly refrigerants R717, R290 and R600a, Applied Mechanics and Materials, 672, pp. 1708-1711, (2014)

[7]

Kashif N., Bo S., Ahmed E., Et al., R290(Propane) and R600a(isobutane) as natural refrigerants for residential heat pump water heaters, Applied Thermal Engineering, 127, pp. 870-883, (2017)

[8]

Zou S.K., Dai Y.D., He G.G., Studies on phase change heat transfer of R290 and its refrigerant mixtures in horizontal tube, Chemical Industry and Engineering Progress, 35, 11, pp. 3413-3420, (2016)

[9]

Zhou W.J., Gan Z.H., A potential approach for reducing the R290 charge in air conditioners and heat pumps, International Journal of Refrigeration, 20, pp. 1-14, (2019)

[10]

Nguyen B.C., Pham Q.V., Kwang-Il C., Et al., Boiling heat transfer of R32, CO2 and R290 inside horizontal minichannel, Energy Procedia, 105, pp. 4822-4827, (2017)

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