Publication detail

An optimal design for hollow fiber heat exchanger: A combined numerical and experimental investigation

BOHÁČEK, J. RAUDENSKÝ, M. ASTROUSKI, I. KARIMI-SIBAKI, E.

Original Title

An optimal design for hollow fiber heat exchanger: A combined numerical and experimental investigation

Type

journal article in Web of Science

Language

English

Original Abstract

Polymeric hollow-fiber heat exchangers are a sound alternative to metallic plate fin counterparts. Plastic heat exchangers weigh much less, have significantly larger surface area per unit volume, are corrosion/erosion resistant and electrically non-conductive, have a reduced ecological footprint, and are likely to be substantially cheaper. A good passive chilled beam type heat exchanger requires its heat transfer surfaces to be distributed in optimal positions so that the thermal performance is maximized. For that purpose, a Lattice-Boltzmann model was setup in the open-source code Palabos to calculate natural convection triggered around a chilled beam made of many parallel hollow fibers with cold water running inside. In the simulations, the horizontal and vertical pitches between fibers were varied to eventually find their dimensionless optima of 6.9 and 1.3, respectively, for the Rayleigh number of 2.3. The numerical results were validated in the experiment as well as in the well-established ANSYS FLUENT.

Keywords

Heat exchanger, Chilled beam, Natural convection, Hollow fiber, Optimization, Computational fluid dynamics

Authors

BOHÁČEK, J.; RAUDENSKÝ, M.; ASTROUSKI, I.; KARIMI-SIBAKI, E.

Released

8. 4. 2021

Publisher

Elsevir Ltd

ISBN

0360-5442

Periodical

Energy

Year of study

229

Number

120571

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

14

Pages count

14

URL

https://www.sciencedirect.com/science/article/pii/S0360544221008203?via%3Dihub

BibTex

@article{BUT171382,
  author="Jan {Boháček} and Miroslav {Raudenský} and Ilja {Astrouski} and Ebrahim {Karimi-Sibaki}",
  title="An optimal design for hollow fiber heat exchanger: A combined numerical and experimental investigation",
  journal="Energy",
  year="2021",
  volume="229",
  number="120571",
  pages="1--14",
  doi="10.1016/j.energy.2021.120571",
  issn="0360-5442",
  url="https://www.sciencedirect.com/science/article/pii/S0360544221008203?via%3Dihub"
}