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Numerical Simulation of Fluid Flow in a Monolithic Exchanger Related to High Temperature and High Pressure Operating Conditions

Selimovic, Faruk LU and Sundén, Bengt LU (2007) In [unknown]
Abstract
The purpose of this work is the enhancement of performance by a new design of monolithic heat exchangers under steady-state operating conditions. Heat transfer phenomena and hydrodynamics have been studied and visualized by computational fluid dynamics (CFD). Further, a simple gas distribution system has been analyzed in purpose to find best performance of the exchanger. To achieve this, 3D simulations of air flow were performed. One of characteristics of monolithic structures is the low pressure drop and high heat transfer coefficient. This is because they operate in the laminar flow regime and have high compactness. However, some experimental studies show that when two fluids are introduced into monolith channels, the manifolds cause... (More)
The purpose of this work is the enhancement of performance by a new design of monolithic heat exchangers under steady-state operating conditions. Heat transfer phenomena and hydrodynamics have been studied and visualized by computational fluid dynamics (CFD). Further, a simple gas distribution system has been analyzed in purpose to find best performance of the exchanger. To achieve this, 3D simulations of air flow were performed. One of characteristics of monolithic structures is the low pressure drop and high heat transfer coefficient. This is because they operate in the laminar flow regime and have high compactness. However, some experimental studies show that when two fluids are introduced into monolith channels, the manifolds cause severe pressure losses. Therefore, in this work, turbulent flow regime at low Reynolds numbers has been investigated to find the difference and better understanding of these structures which are of interest in high temperature applications today. The simulation shows that the pressure drop of the gas flow distributor is a key parameter affecting the heat transfer in the exchanger channels. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
unpublished
subject
keywords
High Temperature Heat Exchangers, Monolithic Heat Exchangers, Gas flow Maldistribution, Computational Fluid Dynamics
in
[unknown]
publisher
Historielärarnas förening
ISSN
0439-2434
language
English
LU publication?
yes
id
9bf3c3e0-ecf0-4ec8-af08-2a7e434c5243 (old id 603322)
date added to LUP
2008-02-20 08:16:44
date last changed
2016-09-30 15:04:31
@article{9bf3c3e0-ecf0-4ec8-af08-2a7e434c5243,
  abstract     = {The purpose of this work is the enhancement of performance by a new design of monolithic heat exchangers under steady-state operating conditions. Heat transfer phenomena and hydrodynamics have been studied and visualized by computational fluid dynamics (CFD). Further, a simple gas distribution system has been analyzed in purpose to find best performance of the exchanger. To achieve this, 3D simulations of air flow were performed. One of characteristics of monolithic structures is the low pressure drop and high heat transfer coefficient. This is because they operate in the laminar flow regime and have high compactness. However, some experimental studies show that when two fluids are introduced into monolith channels, the manifolds cause severe pressure losses. Therefore, in this work, turbulent flow regime at low Reynolds numbers has been investigated to find the difference and better understanding of these structures which are of interest in high temperature applications today. The simulation shows that the pressure drop of the gas flow distributor is a key parameter affecting the heat transfer in the exchanger channels.},
  author       = {Selimovic, Faruk and Sundén, Bengt},
  issn         = {0439-2434},
  keyword      = {High Temperature Heat Exchangers,Monolithic Heat Exchangers,Gas flow Maldistribution,Computational Fluid Dynamics},
  language     = {eng},
  publisher    = {Historielärarnas förening},
  series       = {[unknown]},
  title        = {Numerical Simulation of Fluid Flow in a Monolithic Exchanger Related to High Temperature and High Pressure Operating Conditions},
  year         = {2007},
}