Two-phase flow pattern based theoretical study of loop heat pipes

被引：19

作者：

Weng, Chih-Yuan ^{[1
]}

Leu, Tzong-Shyng ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Aeronaut & Astronaut, Tainan 70101, Taiwan

来源：

APPLIED THERMAL ENGINEERING | 2016年 / 98卷

关键词：

Loop heat pipe; Two-phase flow; Flow patterns; GAS-LIQUID FLOW; HORIZONTAL TUBES; REGIME TRANSITIONS; TRANSFER MODEL; CONDENSATION; MAP;

D O I：

10.1016/j.applthermaleng.2015.11.124

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Loop heat pipes (LHPs) are passive heat transport devices using capillary structures to circulate the working fluid. In this study, several theoretical models based on conservation equations in the system are used to evaluate the characteristics of LHPs. In addition, while computing the characteristics of two-phase flow within LHP, the progression of the flow regimes in the condensing tube is specially considered by adopting proper two-phase flow pattern map. In this study, the comparison between the experimental and theoretical results of new proposed model achieves the smallest mean absolute percentage error (MAPE) of 2.00% in the fixed conductance modes among all existing models. It has been shown that the characteristics of LHP can be better predicted by using new proposed model with consideration of the surface tension influence on two-phase flow pattern map within condensation tube diameter ranging from 1 mm to 5 mm. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：228 / 237

页数：10

共 30 条

[1] Thermohydraulic modeling of capillary pumped loop and loop heat pipe [J].

Adoni, Abhijit A. ;

Ambirajan, Amrit ;

Jasvanth, V. S. ;

Kumar, D. ;

Dutta, Pradip ;

Srinivasan, K. .

JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER, 2007, 21 (02) :410-421

[2] Mathematical modeling of steady-state operation of a loop heat pipe [J].

Bai, Lizhan ;

Lin, Guiping ;

Zhang, Hongxing ;

Wen, Dongsheng .

APPLIED THERMAL ENGINEERING, 2009, 29 (13) :2643-2654

[3] A SIMPLE 2-PHASE FRICTIONAL PRESSURE-DROP CALCULATION METHOD [J].

BEATTIE, DRH ;

WHALLEY, PB .

INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 1982, 8 (01) :83-87

[4] PREDICTION OF HORIZONTAL TUBESIDE CONDENSATION OF PURE COMPONENTS USING FLOW REGIME CRITERIA [J].

BREBER, G ;

PALEN, JW ;

TABOREK, J .

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 1980, 102 (03) :471-476

[5] Condensation of halogenated refrigerants inside smooth tubes [J].

Cavallini, A ;

Censi, G ;

Del Col, D ;

Doretti, L ;

Longo, GA ;

Rossetto, L .

HVAC&R RESEARCH, 2002, 8 (04) :429-451

[6]

Chuang P.-Y.A., 2002, ASME INT MECH ENG C

[7]

Chuang P. Y. A., 2003, An Improved Steady-State Model of Loop Heat Pipes Based on Experimental and Theoretical Analyses

[8] Study of a loop heat pipe using neutron radiography [J].

Cimbala, JM ;

Brenizer, JS ;

Chuang, APY ;

Hanna, S ;

Conroy, CT ;

El-Ganayni, AA ;

Riley, DR .

APPLIED RADIATION AND ISOTOPES, 2004, 61 (04) :701-705

[9] Characterization of two-phase flow patterns in small diameter round and rectangular tubes [J].

Coleman, JW ;

Garimella, S .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1999, 42 (15) :2869-2881

[10] Condensation in horizontal tubes, part 1: two-phase flow pattern map [J].

El Hajal, J ;

Thome, JR ;

Cavallini, A .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2003, 46 (18) :3349-3363

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