Experimental investigation on FDB starting point in three-side heated narrow rectangular channel

ZHOU Yunlong1 GUO Xintian1 ZHANG Wenchao1 CHEN Xu

(1.College of Energy and Power Engineering, Northeast Electric Power University, Jilin, Jilin, China 132012)

【Abstract】The deionized water was used as the experimental medium, and the fully developed boiling (FDB) starting point of the three-side heated narrow rectangular channel with a section of 3 mm × 43 mm was studied. The influence of some thermal parameters on FDB starting point was analyzed. The empirical correlation of FDB’s heat flux suitable for the three-side heated narrow rectangular channel was obtained by nonlinear regression analysis for experimental data of FDB starting location. The results show that the new empirical correlation can accurately predict heat flux of FDB in the three-side heated narrow rectangular channel. The relative error of predicting value is 15.17%. Besides, the simulation results of new empirical correlation are compared with some existing experimental data. The experimental data obtained from one-side heated narrow rectangular channel are in fairly agreement with new empirical correlation. This shows that new empirical correlation is well suited for one-side heated narrow rectangular channel.

【Keywords】 three-side heating; narrow rectangular channel; FDB starting point; two-phase flow; heat transfer; phase change;

【DOI】

【Funds】 National Natural Science Foundation of China (51541608, 51776033)

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This Article

ISSN:0438-1157

CN: 11-1946/TQ

Vol 69, No. 12, Pages 4972-4978+5406

December 2018

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Article Outline

Abstract

  • Introduction
  • 1 Experimental device
  • 2 Experimental method and data processing
  • 3 Experimental results analysis
  • 4 Conclusions
  • Notation
  • References