Experimental Performance of a Two-Phase Closed Thermosyphon Charged with Hydrocarbons and Freon Refrigerants for Renewable Energy Applications

被引：3

作者：

Ma, Limin ^{[1
,2
]}

Shang, Linlin ^{[1
,2
]}

Zhong, Dan ^{[1
,2
]}

Ji, Zhongli ^{[1
,2
]}

机构：

[1] China Univ Petr, 18th Fuxue Rd Changping Dist, Beijing 102249, Peoples R China

[2] Beijing Key Lab Proc Fluid Filtrat & Separat, Beijing 102249, Peoples R China

来源：

8TH INTERNATIONAL CONFERENCE ON APPLIED ENERGY (ICAE2016) | 2017年 / 105卷

关键词：

Two-phase closed thermosyphon; performance evaluation; Working fluid; Heat transfer coefficient;

D O I：

10.1016/j.egypro.2017.03.1044

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Experimental performance investigation of a two-phase closed thermosyphon (TPCT) charged with eight working fluids: R134a, R601, R245fa, R600a, R1234ze, R152a, R245fa/R152a and R601/R245fa has been carried out. The TPCT was made of 3 m long smooth copper pipe with an d(i) of 40 mm. The evaporator section was immersed in the thermostatic water bath and the condenser section was cooled by recycled water. The experimental results show that R245fa/R152a offers the highest heat transfer rate Q, and R600a and R1234ze performance closely to R134a. Cooper and Rohsenow pool boiling HTC correlations were chosen to compare with the experimental results, which have good agreement with the measurements and the average errors are 23.1% and 16.6% respectively. Nusselt and Hashimoto and Kaminaga correlations were chosen to predict the condensation HTCs. Compared with the measurements, both tend to over predict the condensation HTCs in low tb (Q) and under predict the HTCs in high tb (Q). And Hashimoto and Kaminaga correlation offers better agreement. (C) 2017 The Authors. Published by Elsevier Ltd.

引用

页码：5147 / 5152

页数：6

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