Enhanced critical heat flux in pool boiling applying the method of different-mode-interacting boiling for water

被引:3
作者
Chen, Zhihao [1 ,2 ]
Xie, Tianxi [1 ,2 ]
Utaka, Yoshio [1 ,2 ]
机构
[1] Tianjin Univ, Sch Mech Engn, 135 Yaguan Rd,Tianjin Haihe Educ Pk, Tianjin 300350, Peoples R China
[2] Tianjin Univ, Key Lab Efficient Utilizat Low & Medium Grade Ener, Minist Educ, Tianjin, Peoples R China
基金
中国国家自然科学基金;
关键词
Pool boiling heat transfer; Different-mode-interacting boiling; Nonuniform conductance; Material pitch; Material arrangement pattern different; material ratio; Critical heat flux enhancement; SURFACES; PERFORMANCE;
D O I
10.1016/j.ijheatmasstransfer.2022.123578
中图分类号
O414.1 [热力学];
学科分类号
摘要
Boiling heat transfer was explored with different-mode-interacting boiling (DMIB) to improve critical heat flux (CHF) in a water pool. Previous research show that nonuniform heating in a geometric copper plate arrangement with different thermal conductance materials achieves remarkably high heat transfer in nar-row gaps. As DMIB does not have any structure on the heating surface, it is also characterized by its re-sistance to surface deterioration. In this study, DMIB is adopted to improve CHF in pool boiling for water. The effects of the pitch P and ratio RL between different materials, and pattern of material arrangements, cross and parallel, inside the heating plate are examined. An enhancement in heat transfer performance is shown for nonuniform heating plates compared with a conventional uniform plate. The CHFs present increases with decreasing P and RL for both material arrangements. Furthermore, the heat transfer per-formances for the nonuniform plates with a cross material arrangement are higher than for a parallel material arrangement. The maximum CHF and ratio of CHF enhancements reach 1.64 MW/m2 and 56%, respectively. (c) 2022 Elsevier Ltd. All rights reserved.
引用
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页数:10
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