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Thermal analysis of plate condensers in presence of flow maldistribution

Bobbili, Prabhakara Rao LU ; Sundén, Bengt LU and Das, Sarit Kumar (2006) In International Journal of Heat and Mass Transfer 49(25-26). p.4966-4977
Abstract
Flow maldistribution in plate heat exchangers causes deterioration of both thermal and hydraulic performance. The situation becomes more complicated for two-phase flows during condensation where uneven distribution of the liquid to the channels reduces heat transfer due to high liquid flooding. The present study evaluates the thermal performance of falling film plate condensers with flow maldistribution from port to channel considering the heat transfer coefficient inside the channels as a function of channel flow rate. A generalized mathematical model has been developed to investigate the effect of maldistribution on the thermal performance as well as the exit quality of vapor. A wide range of parametric study is presented, which shows... (More)
Flow maldistribution in plate heat exchangers causes deterioration of both thermal and hydraulic performance. The situation becomes more complicated for two-phase flows during condensation where uneven distribution of the liquid to the channels reduces heat transfer due to high liquid flooding. The present study evaluates the thermal performance of falling film plate condensers with flow maldistribution from port to channel considering the heat transfer coefficient inside the channels as a function of channel flow rate. A generalized mathematical model has been developed to investigate the effect of maldistribution on the thermal performance as well as the exit quality of vapor. A wide range of parametric study is presented, which shows the effects of the mass flow rate ratio of cold fluid and two-phase fluid, flow configuration, number of channels and correlation for the heat transfer coefficient. The analysis presented here also suggests an improved method for heat transfer data analysis for plate condensers. (Less)
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author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
phase change, condensation, transport processes, heat transfer, mathematical modelling
in
International Journal of Heat and Mass Transfer
volume
49
issue
25-26
pages
4966 - 4977
publisher
Pergamon Press Ltd.
external identifiers
  • wos:000242397800025
  • scopus:33750296879
ISSN
0017-9310
DOI
10.1016/j.ijheatmasstransfer.2006.05.040
language
English
LU publication?
yes
id
e4d32e6a-39f3-4c72-a57d-f2fe68cf029a (old id 685507)
date added to LUP
2016-04-01 11:49:23
date last changed
2021-09-29 01:16:32
@article{e4d32e6a-39f3-4c72-a57d-f2fe68cf029a,
  abstract     = {Flow maldistribution in plate heat exchangers causes deterioration of both thermal and hydraulic performance. The situation becomes more complicated for two-phase flows during condensation where uneven distribution of the liquid to the channels reduces heat transfer due to high liquid flooding. The present study evaluates the thermal performance of falling film plate condensers with flow maldistribution from port to channel considering the heat transfer coefficient inside the channels as a function of channel flow rate. A generalized mathematical model has been developed to investigate the effect of maldistribution on the thermal performance as well as the exit quality of vapor. A wide range of parametric study is presented, which shows the effects of the mass flow rate ratio of cold fluid and two-phase fluid, flow configuration, number of channels and correlation for the heat transfer coefficient. The analysis presented here also suggests an improved method for heat transfer data analysis for plate condensers.},
  author       = {Bobbili, Prabhakara Rao and Sundén, Bengt and Das, Sarit Kumar},
  issn         = {0017-9310},
  language     = {eng},
  number       = {25-26},
  pages        = {4966--4977},
  publisher    = {Pergamon Press Ltd.},
  series       = {International Journal of Heat and Mass Transfer},
  title        = {Thermal analysis of plate condensers in presence of flow maldistribution},
  url          = {http://dx.doi.org/10.1016/j.ijheatmasstransfer.2006.05.040},
  doi          = {10.1016/j.ijheatmasstransfer.2006.05.040},
  volume       = {49},
  year         = {2006},
}