Enhanced Subcooled Flow Boiling Heat Transfer in Microchannel With Piranha Pin Fin

被引：25

作者：

Yu, X. ^{[1
]}

Woodcock, C. ^{[1
]}

Wang, Y. ^{[2
]}

Plawsky, J. ^{[3
]}

Peles, Y. ^{[2
]}

机构：

[1] Rensselaer Polytech Inst, Mech Aerosp & Nucl Engn Dept, 110 8th St, Troy, NY 12180 USA

[2] Univ Cent Florida, Dept Mech & Aerosp Engn, 4000 Cent Florida Blvd, Orlando, FL 32816 USA

[3] Rensselaer Polytech Inst, Chem Engn Dept, 110 8th St, Troy, NY 12180 USA

来源：

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME | 2017年 / 139卷 / 11期

关键词：

PRESSURE-DROP; SINGLE-PHASE; CONVECTIVE FLOW; HORIZONTAL TUBE; FLUX; WATER; JET; PPF;

D O I：

10.1115/1.4036683

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

An experimental study on subcooled flow boiling with engineering fluid HFE-7000 in a microchannel fitted with piranha pin fins (PPFs) is presented. Heat fluxes of up to 735 W/cm(2) were achieved and mass fluxes ranged from 618 kg/m(2) s to 2569 kg/m(2) s. It was found that the flow boiling heat transfer was significantly enhanced with PPFs. The heat transfer coefficient with flow boiling was double the corresponding single-phase flow. Correlations for two-phase heat transfer coefficient and pressure drop in the nucleate flow boiling regime were developed based on the boiling, Weber, and Jakob numbers. The onset of nucleate boiling (ONB) and the critical heat flux (CHF) conditions were determined through visualization and was typically initiated from the last row of fins where temperatures were highest and flow rates lowest.

引用

页数：13

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