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Thermal analysis of plate condensers in presence of flow maldistribution using refrigerant R134a

Bobbili, Prabhakara Rao LU ; Sundén, Bengt LU and Das, Subhas LU (2006) 2006 ASME International Mechanical Engineering Congress and Exposition, IMECE2006 In Proceedings of 2006 ASME International Mechanical Engineering Congress and Exposition, IMECE2006 - Process Industries
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 vapor quality of a refrigerant, namely R-134a. A wide range of parameters are... (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 vapor quality of a refrigerant, namely R-134a. A wide range of parameters are studied and these show the effects of the mass flow rate ratio of cold fluid (water) and two-phase refrigerant 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. Copyright (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Flow maldistribution, Liquid flooding, Thermal performance, Plate condensers
in
Proceedings of 2006 ASME International Mechanical Engineering Congress and Exposition, IMECE2006 - Process Industries
pages
11 pages
publisher
American Society Of Mechanical Engineers (ASME)
conference name
2006 ASME International Mechanical Engineering Congress and Exposition, IMECE2006
external identifiers
  • scopus:84920633093
ISBN
0791837904
language
English
LU publication?
yes
id
e34c0950-d8fb-4740-9712-24c8f223e02c (old id 617031)
date added to LUP
2007-11-24 09:34:47
date last changed
2017-01-01 08:04:03
@inproceedings{e34c0950-d8fb-4740-9712-24c8f223e02c,
  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 vapor quality of a refrigerant, namely R-134a. A wide range of parameters are studied and these show the effects of the mass flow rate ratio of cold fluid (water) and two-phase refrigerant 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. Copyright},
  author       = {Bobbili, Prabhakara Rao and Sundén, Bengt and Das, Subhas},
  booktitle    = {Proceedings of 2006 ASME International Mechanical Engineering Congress and Exposition, IMECE2006 - Process Industries},
  isbn         = {0791837904},
  keyword      = {Flow maldistribution,Liquid flooding,Thermal performance,Plate condensers},
  language     = {eng},
  pages        = {11},
  publisher    = {American Society Of Mechanical Engineers (ASME)},
  title        = {Thermal analysis of plate condensers in presence of flow maldistribution using refrigerant R134a},
  year         = {2006},
}