Experimental investigation of condensation pressure drop of R134a in smooth and grooved multiport flat tubes of automotive heat exchanger

Syed Muhammad Ammar; Naseem Abbas; Saleem Abbas; Hafiz Muhammad Ali; Iftikhar Hussain; Muhammad Mansoor Janjua

doi:10.1016/j.ijheatmasstransfer.2018.11.018

Experimental investigation of condensation pressure drop of R134a in smooth and grooved multiport flat tubes of automotive heat exchanger

Syed Muhammad Ammar
, Naseem Abbas
, Saleem Abbas
, Hafiz Muhammad Ali^*
, Iftikhar Hussain
, Muhammad Mansoor Janjua

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

42 Scopus citations

Abstract

Condensation frictional pressure drop was obtained in multiport micro channel smooth and grooved flat tubes using R134a. The study consists of two smooth and one grooved tube. Refrigerant R134a is studied over a mass flux 490–1600 kg/m²s, heat flux 5.5–19 kW/m² and saturation temperature 51–68 °C. Results reveal that frictional pressure drop increases with an increment of mass flux, vapor quality and decreases with the increase of saturation temperature. The effect of heat flux on frictional pressure drop was negligible. Grooved tube shows the lowest pressure drop and surprisingly highest heat transfer coefficient. The frictional pressure drop data was compared with famous correlations. Zhang and Webb predicted 86% of the data with in ±30%.

Original language	English
Pages (from-to)	1087-1095
Number of pages	9
Journal	International Journal of Heat and Mass Transfer
Volume	130
DOIs	https://doi.org/10.1016/j.ijheatmasstransfer.2018.11.018
State	Published - Mar 2019
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2018 Elsevier Ltd

Keywords

Automotive heat exchanger
Flattened tube
Micro channels
Pressure drop
Pure two-phase vapor
R134a

ASJC Scopus subject areas

Condensed Matter Physics
Mechanical Engineering
Fluid Flow and Transfer Processes

Access to Document

10.1016/j.ijheatmasstransfer.2018.11.018

Cite this

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title = "Experimental investigation of condensation pressure drop of R134a in smooth and grooved multiport flat tubes of automotive heat exchanger",

abstract = "Condensation frictional pressure drop was obtained in multiport micro channel smooth and grooved flat tubes using R134a. The study consists of two smooth and one grooved tube. Refrigerant R134a is studied over a mass flux 490–1600 kg/m2s, heat flux 5.5–19 kW/m2 and saturation temperature 51–68 °C. Results reveal that frictional pressure drop increases with an increment of mass flux, vapor quality and decreases with the increase of saturation temperature. The effect of heat flux on frictional pressure drop was negligible. Grooved tube shows the lowest pressure drop and surprisingly highest heat transfer coefficient. The frictional pressure drop data was compared with famous correlations. Zhang and Webb predicted 86\% of the data with in ±30\%.",

keywords = "Automotive heat exchanger, Flattened tube, Micro channels, Pressure drop, Pure two-phase vapor, R134a",

author = "Ammar, \{Syed Muhammad\} and Naseem Abbas and Saleem Abbas and Ali, \{Hafiz Muhammad\} and Iftikhar Hussain and Janjua, \{Muhammad Mansoor\}",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2019",

month = mar,

doi = "10.1016/j.ijheatmasstransfer.2018.11.018",

language = "English",

volume = "130",

pages = "1087--1095",

journal = "International Journal of Heat and Mass Transfer",

issn = "0017-9310",

}

TY - JOUR

T1 - Experimental investigation of condensation pressure drop of R134a in smooth and grooved multiport flat tubes of automotive heat exchanger

AU - Ammar, Syed Muhammad

AU - Abbas, Naseem

AU - Abbas, Saleem

AU - Ali, Hafiz Muhammad

AU - Hussain, Iftikhar

AU - Janjua, Muhammad Mansoor

PY - 2019/3

Y1 - 2019/3

N2 - Condensation frictional pressure drop was obtained in multiport micro channel smooth and grooved flat tubes using R134a. The study consists of two smooth and one grooved tube. Refrigerant R134a is studied over a mass flux 490–1600 kg/m2s, heat flux 5.5–19 kW/m2 and saturation temperature 51–68 °C. Results reveal that frictional pressure drop increases with an increment of mass flux, vapor quality and decreases with the increase of saturation temperature. The effect of heat flux on frictional pressure drop was negligible. Grooved tube shows the lowest pressure drop and surprisingly highest heat transfer coefficient. The frictional pressure drop data was compared with famous correlations. Zhang and Webb predicted 86% of the data with in ±30%.

AB - Condensation frictional pressure drop was obtained in multiport micro channel smooth and grooved flat tubes using R134a. The study consists of two smooth and one grooved tube. Refrigerant R134a is studied over a mass flux 490–1600 kg/m2s, heat flux 5.5–19 kW/m2 and saturation temperature 51–68 °C. Results reveal that frictional pressure drop increases with an increment of mass flux, vapor quality and decreases with the increase of saturation temperature. The effect of heat flux on frictional pressure drop was negligible. Grooved tube shows the lowest pressure drop and surprisingly highest heat transfer coefficient. The frictional pressure drop data was compared with famous correlations. Zhang and Webb predicted 86% of the data with in ±30%.

KW - Automotive heat exchanger

KW - Flattened tube

KW - Micro channels

KW - Pressure drop

KW - Pure two-phase vapor

KW - R134a

UR - https://www.scopus.com/pages/publications/85056466558

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DO - 10.1016/j.ijheatmasstransfer.2018.11.018

M3 - Article

AN - SCOPUS:85056466558

SN - 0017-9310

VL - 130

SP - 1087

EP - 1095

JO - International Journal of Heat and Mass Transfer

JF - International Journal of Heat and Mass Transfer

ER -

Experimental investigation of condensation pressure drop of R134a in smooth and grooved multiport flat tubes of automotive heat exchanger

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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Cite this