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research-article

Critical Heat Flux of Flowing Water in Tube for Pressures up to Near-Critical Point

[+] Author and Article Information
Yuzhou Chen

China Institute of Atomic Energy, P.O. Box 275(59), Beijing 102413, China
chenyz2015@icloud.com

Minfu Zhao

China Institute of Atomic Energy, P.O. Box 275(59), Beijing 102413, China
zhaominfu@163.com

Keming BI

China Institute of Atomic Energy, P.O. Box 275(59), Beijing 102413, China
bikeming@126.com

Bin Yang

China Institute of Atomic Energy, P.O. Box 275(59), Beijing 102413, China
270513461@qq.com

Dongxu Zhang

China Institute of Atomic Energy, P.O. Box 275(59), Beijing 102413, China
Dongxu2007@yeah.net

Kaiwen Du

China Institute of Atomic Energy, P.O. Box 275(59), Beijing 102413, China
ciae_dukaiwen@163.com

1Corresponding author.

ASME doi:10.1115/1.4038215 History: Received May 01, 2017; Revised October 16, 2017

Abstract

Critical heat flux experiment was performed in a tube of 8.2 mm in inner diameter with 2.4 m in heated length. The pressure covered the ranges from 8.6 to 21.0 MPa, mass flux 1157 to 3776 kg/m2s, inlet quality -2.79 to -0.08 (subcooling 19 to 337 oC) and local quality -0.97 to 0.53. For the pressure close to the near-critical point the critical heat flux decreased with the pressure increasing. For the subcooling larger than a certain value the critical heat flux was related to the local conditions, and the experimental results were in agreement with the previous correlation. But for low subcooling and saturated flow the critical condition was related to the total power. Based on the present experimental results an empirical correlation of the critical heat flux was presented.

Copyright (c) 2017 by ASME
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