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An experimental and theoretical investigation of the effect of flow maldistribution on the thermal performance of plate heat exchangers

Rao, B P; Sundén, Bengt LU and Das, S K (2005) In Journal of Heat Transfer 127(3). p.332-343
Abstract
An experimental and theoretical study of the effect of flow maldistribution from port to channel on the thermal performance of single and multipass plate heat exchangers is presented. In general, flow maldistribution brings about an increase in pressure drop and decrease of the thermal performance in heat exchangers. This deterioration is found to depend on flow rate, number of channels, and port size. Experiments show that analytical predictions of pressure drop and thermal performance in presence of flow maldistribution are quite accurate for practical purposes. The results indicate that under identical conditions, maldistribution is more severe in Z-type plate heat exchanger compared to U type. Multipassing is found to reduce the... (More)
An experimental and theoretical study of the effect of flow maldistribution from port to channel on the thermal performance of single and multipass plate heat exchangers is presented. In general, flow maldistribution brings about an increase in pressure drop and decrease of the thermal performance in heat exchangers. This deterioration is found to depend on flow rate, number of channels, and port size. Experiments show that analytical predictions of pressure drop and thermal performance in presence of flow maldistribution are quite accurate for practical purposes. The results indicate that under identical conditions, maldistribution is more severe in Z-type plate heat exchanger compared to U type. Multipassing is found to reduce the maldistribution effect significantly. An insight to the physical aspects of maldistribution and its possible reduction through proper design strategy are also presented. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Heat Transfer
volume
127
issue
3
pages
332 - 343
publisher
American Society Of Mechanical Engineers (ASME)
external identifiers
  • wos:000228610900013
  • scopus:17744384694
ISSN
0022-1481
DOI
10.1115/1.1860568#
language
English
LU publication?
yes
id
d0339cbc-836f-434e-a877-edeca76e6821 (old id 244360)
date added to LUP
2007-08-06 08:48:32
date last changed
2017-08-20 04:19:36
@article{d0339cbc-836f-434e-a877-edeca76e6821,
  abstract     = {An experimental and theoretical study of the effect of flow maldistribution from port to channel on the thermal performance of single and multipass plate heat exchangers is presented. In general, flow maldistribution brings about an increase in pressure drop and decrease of the thermal performance in heat exchangers. This deterioration is found to depend on flow rate, number of channels, and port size. Experiments show that analytical predictions of pressure drop and thermal performance in presence of flow maldistribution are quite accurate for practical purposes. The results indicate that under identical conditions, maldistribution is more severe in Z-type plate heat exchanger compared to U type. Multipassing is found to reduce the maldistribution effect significantly. An insight to the physical aspects of maldistribution and its possible reduction through proper design strategy are also presented.},
  author       = {Rao, B P and Sundén, Bengt and Das, S K},
  issn         = {0022-1481},
  language     = {eng},
  number       = {3},
  pages        = {332--343},
  publisher    = {American Society Of Mechanical Engineers (ASME)},
  series       = {Journal of Heat Transfer},
  title        = {An experimental and theoretical investigation of the effect of flow maldistribution on the thermal performance of plate heat exchangers},
  url          = {http://dx.doi.org/10.1115/1.1860568#},
  volume       = {127},
  year         = {2005},
}