FLOW BOILING CRITICAL HEAT FLUX IN A SMALL TUBE FOR FC-72
-
Published:2024
Issue:9
Volume:55
Page:1-16
-
ISSN:1064-2285
-
Container-title:Heat Transfer Research
-
language:en
-
Short-container-title:Heat Trans Res
Author:
Otsuki Yuki,Shibahara Makoto,Liu Qiusheng,Fitri Sutopo Purwono
Abstract
Flow boiling of FC-72 in a small tube was investigated experimentally. The tube with an inner diameter of 1.8 mm
and a length of 129 mm was made from SUS304 stainless steel. The effect of flow velocity and subcooling on critical
heat flux (CHF) was measured in this experiment. The flow velocity u was varied from 0.33 to 4.26 m/s, and the inlet
subcooling degree was varied from 25 to 36 K. The heat transfer coefficients with the imposed heat flux varying from the non-boiling to the boiling region were then measured. Experimental results showed that CHF increased as flow velocity was raised, but it sharply declined above <i>u</i> = 3.0 m/s because of premature CHF. On the basis of the experimental data, the empirical correlation between the boiling number and the Weber number was obtained. The predicted value of this correlation was in agreement with the measured data within 17%.
Reference16 articles.
1. ANSI/ASME, Measurement Uncertainty, Supplement on Instruments and Apparatus, Part 1, PTC 19.1-1985, 1987. 2. Bar-Cohen, A., Thermal Management of Electronic Components with Dielectric Liquid, JSME Ser. B, vol. 36, no. 1, pp. 1-25, 1993. 3. Choi, Y.S., Lim, T.W., You, S.S., and Kim, H.S., Two-Phase Flow Boiling Heat Transfer of FC-72 in Parallel Micro-Channels, Exp. Heat Transf., vol. 30, no. 4, pp. 284-301, 2017. 4. Dittus, F.W. and Boelter, L.M.K., Heat Transfer in Automobile Radiators of the Tubular Type, Univ. California Publ. Eng., vol. 2, no. 13, pp. 443-461, 1930. 5. Lee, J. and Mudawar, I., Fluid Flow and Heat Transfer Characteristics of Low Temperature Two-Phase Micro-Channel Heat Sinks - Part 1: Experimental Methods and Flow Visualization Results, Int. J. Heat Mass Transf., vol. 51, pp. 4315-4326, 2008.
|
|