Vertical flow boiling of refrigerant R134a in small channels

被引：102

作者：

Agostini, B ^{[1
]}

Bontemps, A ^{[1
]}

机构：

[1] Univ Grenoble 1, LEGI, CEA, GRETh, F-38054 Grenoble, France

来源：

INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW | 2005年 / 26卷 / 02期

关键词：

mini-channel; compact heat exchanger; heat transfer coefficient; dry-out; flow boiling;

D O I：

10.1016/j.ijheatfluidflow.2004.08.003

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This article presents an experimental study of ascendant forced flow boiling in mini-channels with refrigerant R134a. A flat aluminium multi-port extruded tube composed of 11 parallel rectangular channels (3.28 mm x 1.47 mm) with hydraulic diameter of 2.01 mm was used. Mass flux ranged from 90 to 295 kg/m(2)s and heat flux from 6.0 to 31.6 kW/m(2). Two working pressures, 405 and 608 kPa, were tested. Inlet subcooling varied from 1 to 17 K. Heat transfer was found to be greater than that previously reported in the literature for conventional tubes, while dry-out occurred at low qualities. (C) 2004 Elsevier Inc. All rights reserved.

引用

页码：296 / 306

页数：11

共 26 条

[1] Friction factor and heat transfer coefficient of R134a liquid flow in mini-channels [J].

Agostini, B ;

Watel, B ;

Bontemps, A ;

Thonon, B .

APPLIED THERMAL ENGINEERING, 2002, 22 (16) :1821-1834

[2] THERMOHYDRAULICS OF BOILING 2-PHASE FLOW IN HIGH CONVERSION LIGHT WATER-REACTORS (THERMOHYDRAULICS AT LOW VELOCITIES) [J].

ARITOMI, M ;

MIYATA, T ;

HORIGUCHI, M ;

SUDI, A .

INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 1993, 19 (01) :51-63

[3]

CORNWELL K, 1995, P 4 UK NAT C HEAT TR, P289

[4]

Cornwell K., 1992, P CEC C EN EFF PROC, P624

[5]

GNIELINSKI V, 1976, INT CHEM ENG, V16, P359

[6] SATURATED BOILING HEAT TRANSFER IN NARROW SPACES [J].

ISHIBASHI, E ;

NISHIKAWA, K .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1969, 12 (08) :863-+

[7] An extension of the flow boiling correlation to transition, laminar, and deep laminar flows in minichannels and microchannels [J].

Kandlikar, SG ;

Balasubramanian, P .

HEAT TRANSFER ENGINEERING, 2004, 25 (03) :86-93

[8] A GENERAL CORRELATION FOR SATURATED 2-PHASE FLOW BOILING HEAT-TRANSFER INSIDE HORIZONTAL AND VERTICAL TUBES [J].

KANDLIKAR, SG .

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 1990, 112 (01) :219-228

[9]

KEW PA, 1994, INST CHEM E, P473

[10] Correlations for the prediction of boiling heat transfer in small-diameter channels [J].

Kew, PA ;

Cornwell, K .

APPLIED THERMAL ENGINEERING, 1997, 17 (8-10) :705-715

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