Performance optimization of a two-phase closed thermosyphon through CFD numerical simulations

被引：65

作者：

Fertahi, Saif Ed-Din ^{[1
,2
]}

Bouhal, T. ^{[1
,2
]}

Agrouaz, Y. ^{[1
,2
]}

Kousksou, T. ^{[2
]}

El Rhafiki, T. ^{[3
]}

Zeraouli, Y. ^{[2
]}

机构：

[1] Univ Sidi Mohamed Ben Abdellah, Ecole Super Technol Fes, Route Imouzzer,BP 2427, Fes, Morocco

[2] UPPA, IFR, Lab Sci Ingn Appl Mecan & Genie Elect SIAME, Ave Jules Ferry, F-64000 Pau, France

[3] Univ Moulay Ismail, ENSAM, Marjane II,BP-4024, Meknes Ismailia, Morocco

来源：

APPLIED THERMAL ENGINEERING | 2018年 / 128卷

关键词：

Two-phase closed thermosyphon; Computational fluid dynamics; Evaporation; Condensation; OPERATING-CONDITIONS; THERMAL PERFORMANCE; HEAT PIPES; INCLINATION; DIAMETER; RATIO; LOOP;

D O I：

10.1016/j.applthermaleng.2017.09.049

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this paper, a comprehensive computational fluid dynamics (CFD) modeling was built to reproduce the pool boiling in the evaporator section and the liquid film condensation in a closed thermosyphon. The two phase Volume Of Fluids (VOF) model was used to simulate the heat transfer during evaporation and condensation inside a closed thermosyphon. This CFD model was validated using experimental results, and a good agreement was observed. Moreover, the results were analyzed in terms of the vapor volume fraction variation, temperature and vertical velocity at different locations along the thermosyphon. A parametric study was also conducted to enhance the performance of the thermosyphon designed for solar thermal energy applications like domestic hot water systems. It is found that the performance of the two-phase closed thermosyphon can be improved by tilted fins integration on the lateral surface of the condenser section. (C) 2017 Elsevier Ltd. All rights reserved.

引用

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页码：551 / 563

页数：13

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