Effect of a delta-winglet vortex pair on the performance of a tube-fin heat exchanger

C. B. Allison; B. B. Dally

doi:10.1016/j.ijheatmasstransfer.2007.08.003

Effect of a delta-winglet vortex pair on the performance of a tube-fin heat exchanger

C. B. Allison, B. B. Dally

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

88 Scopus citations

Abstract

The experimental analysis of the effects of delta-winglet vortex generators on the performance of a fin and tube radiator is presented. The winglets were arranged in flow-up configuration, and placed directly upstream of the tube. This is a hitherto untested configuration, but is thought to have certain advantages. In addition to vortex generation the flow is guided onto the tube surface increasing the localised velocity gradients and Nusselt numbers in this region. The study includes dye visualisation and full scale heat transfer performance measurements. The results are compared to a standard louvre fin surface. It was found that the winglet surface had 87% of the heat transfer capacity but only 53% of the pressure drop of the louvre fin surface. © 2007 Elsevier Ltd. All rights reserved.

Original language	English (US)
Pages (from-to)	5065-5072
Number of pages	8
Journal	International Journal of Heat and Mass Transfer
Volume	50
Issue number	25-26
DOIs	https://doi.org/10.1016/j.ijheatmasstransfer.2007.08.003
State	Published - Dec 1 2007
Externally published	Yes

ASJC Scopus subject areas

Mechanical Engineering
Fluid Flow and Transfer Processes
Condensed Matter Physics

Access to Document

10.1016/j.ijheatmasstransfer.2007.08.003

Cite this

@article{e00d4b10620b4814bb7fc63c4fdb9d75,

title = "Effect of a delta-winglet vortex pair on the performance of a tube-fin heat exchanger",

abstract = "The experimental analysis of the effects of delta-winglet vortex generators on the performance of a fin and tube radiator is presented. The winglets were arranged in flow-up configuration, and placed directly upstream of the tube. This is a hitherto untested configuration, but is thought to have certain advantages. In addition to vortex generation the flow is guided onto the tube surface increasing the localised velocity gradients and Nusselt numbers in this region. The study includes dye visualisation and full scale heat transfer performance measurements. The results are compared to a standard louvre fin surface. It was found that the winglet surface had 87% of the heat transfer capacity but only 53% of the pressure drop of the louvre fin surface. {\textcopyright} 2007 Elsevier Ltd. All rights reserved.",

author = "Allison, {C. B.} and Dally, {B. B.}",

note = "Generated from Scopus record by KAUST IRTS on 2022-09-12",

year = "2007",

month = dec,

day = "1",

doi = "10.1016/j.ijheatmasstransfer.2007.08.003",

language = "English (US)",

volume = "50",

pages = "5065--5072",

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

issn = "0017-9310",

publisher = "Elsevier Ltd",

number = "25-26",

}

TY - JOUR

T1 - Effect of a delta-winglet vortex pair on the performance of a tube-fin heat exchanger

AU - Allison, C. B.

AU - Dally, B. B.

N1 - Generated from Scopus record by KAUST IRTS on 2022-09-12

PY - 2007/12/1

Y1 - 2007/12/1

N2 - The experimental analysis of the effects of delta-winglet vortex generators on the performance of a fin and tube radiator is presented. The winglets were arranged in flow-up configuration, and placed directly upstream of the tube. This is a hitherto untested configuration, but is thought to have certain advantages. In addition to vortex generation the flow is guided onto the tube surface increasing the localised velocity gradients and Nusselt numbers in this region. The study includes dye visualisation and full scale heat transfer performance measurements. The results are compared to a standard louvre fin surface. It was found that the winglet surface had 87% of the heat transfer capacity but only 53% of the pressure drop of the louvre fin surface. © 2007 Elsevier Ltd. All rights reserved.

AB - The experimental analysis of the effects of delta-winglet vortex generators on the performance of a fin and tube radiator is presented. The winglets were arranged in flow-up configuration, and placed directly upstream of the tube. This is a hitherto untested configuration, but is thought to have certain advantages. In addition to vortex generation the flow is guided onto the tube surface increasing the localised velocity gradients and Nusselt numbers in this region. The study includes dye visualisation and full scale heat transfer performance measurements. The results are compared to a standard louvre fin surface. It was found that the winglet surface had 87% of the heat transfer capacity but only 53% of the pressure drop of the louvre fin surface. © 2007 Elsevier Ltd. All rights reserved.

UR - https://linkinghub.elsevier.com/retrieve/pii/S0017931007004978

UR - http://www.scopus.com/inward/record.url?scp=36549005591&partnerID=8YFLogxK

U2 - 10.1016/j.ijheatmasstransfer.2007.08.003

DO - 10.1016/j.ijheatmasstransfer.2007.08.003

M3 - Article

SN - 0017-9310

VL - 50

SP - 5065

EP - 5072

JO - International Journal of Heat and Mass Transfer

JF - International Journal of Heat and Mass Transfer

IS - 25-26

ER -

Effect of a delta-winglet vortex pair on the performance of a tube-fin heat exchanger

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this