Condensing heat transfer coefficients of R134a in smooth and grooved multiport flat tubes of automotive heat exchanger: An experimental investigation

被引：33

作者：

Ammar, Syed Muhammad ^{[1
]}

Abbas, Naseem ^{[2
]}

Abbas, Saleem ^{[3
]}

Ali, Hafiz Muhammad ^{[4
]}

Hussain, Iftikhar ^{[5
]}

Janjua, Muhammad Mansoor ^{[6
]}

Sajjad, Uzair ^{[7
]}

Dahiya, Anurag ^{[7
]}

机构：

[1] Incheon Natl Univ, Dept Mech Engn, Incheon 22012, South Korea

[2] Chung Ang Univ, Sch Mech Engn, Seoul 06974, South Korea

[3] Chonbuk Natl Univ, Div Mech Design Engn, Jeonju 54896, Jeonbuk, South Korea

[4] Univ Engn & Technol, Mech Engn Dept, Taxila 47050, Pakistan

[5] Yeungnam Univ, Sch Chem Engn, Gyongsan 38541, Gyeongbuk, South Korea

[6] Higher Coll Technol, Dept Mechatron & Mech Engn, POB 15825, Dubai, U Arab Emirates

[7] Natl Chiao Tung Univ, Mech Engn Dept, Thermal Management & Energy Efficiency Lab, Hsinchu, Taiwan

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2019年 / 134卷

关键词：

Automotive heat exchanger; Flattened tube; R134a; Heat transfer coefficient; Pure two-phase vapor; PRESSURE-DROP; CONDENSATION; R-134A;

D O I：

10.1016/j.ijheatmasstransfer.2019.01.047

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Condensation heat transfer coefficient of R134a was obtained in multi-port micro channel smooth and grooved flat tubes of automotive heat exchanger. The test consisted of two smooth and one grooved tube. The test range covered mass flux 490-1600 kg/m(2) s, heat flux 5.5-19 kW/m(2) and saturation temperature 51-68 degrees C. Results revealed that condensation heat transfer coefficient increased with an increment of mass flux, vapor quality and decreased with the increase of saturation temperature. The effect of heat flux on heat transfer coefficient was negligible. The grooved tube showed larger heat transfer coefficient than that of smooth tubes. A comparison of the present data of flat tube with existing correlations revealed that the heat transfer coefficient was not reasonably predicted, therefore new correlation was developed for heat transfer coefficient that predicted 86% data within +/- 30% with a mean error of 16%. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：366 / 376

页数：11

共 36 条

[1] Measurement and modeling of condensation heat transfer in non-circular microchannels [J].

Agarwal, Akhil ;

Bandhauer, Todd M. ;

Garimella, Srinivas .

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID, 2010, 33 (06) :1169-1179

[2] Representative Results for Condensation Measurements at Hydraulic Diameters ∼100 Microns [J].

Agarwal, Akhil ;

Garimella, Srinivas .

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 2010, 132 (04) :1-12

[3]

Akers W.W., 1958, Chem Eng Progr, V54

[4] Experimental investigation of condensation pressure drop of R134a in smooth and grooved multiport flat tubes of automotive heat exchanger [J].

Ammar, Syed Muhammad ;

Abbas, Naseem ;

Abbas, Saleem ;

Ali, Hafiz Muhammad ;

Hussain, Iftikhar ;

Janjua, Muhammad Mansoor .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2019, 130 :1087-1095

[5]

[Anonymous], 2017, EUROPEAN J ENG NAT S

[6]

[Anonymous], 1915, ASME T

[7] Measurement and modeling of condensation heat transfer coefficients in circular microchannels [J].

Bandhauer, Todd M. ;

Agarwal, Akhil ;

Garimella, Srinivas .

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 2006, 128 (10) :1050-1059

[8] Condensation heat transfer and pressure gradient inside multiport minichannels [J].

Cavallini, A ;

Del Col, D ;

Doretti, L ;

Matkovic, M ;

Rossetto, L ;

Zilio, C .

HEAT TRANSFER ENGINEERING, 2005, 26 (03) :45-55

[9]

Chisholm D., 1958, T AM SOC MECH ENG, V80, P276

[10]

Chowdhury S., 2006, ICNMM, P147

← 1 2 3 4 →