Publication detail

Numerical Investigation of Heat Transfer on the Outer Surface of Polymeric Hollow Fibers

BARTULI, E. RAUDENSKÝ, M.

Original Title

Numerical Investigation of Heat Transfer on the Outer Surface of Polymeric Hollow Fibers

English Title

Numerical Investigation of Heat Transfer on the Outer Surface of Polymeric Hollow Fibers

Type

abstract

Language

en

Original Abstract

Polymeric hollow fiber heat exchangers (PHFHE) are heat exchangers which use polymeric microchannels as the heat transfer surface. The main purpose of this work was to determine an optimal arrangement of polymeric hollow fibers in a PHFHE. The object of study was a bundle of parallel polymeric hollow fibers with an outer diameter of 0.8 mm. The heated working fluid flows inside the hollow fiber. Heat is transferred by a cooling medium from outside of the hollow fibers. Heat transfer coefficients on the outer surface of hollow fibers were obtained using computer modelling. For the case of water cooling a sharp heat transfer coefficient increase was observed as the angle between the hollow fiber position and the direction of the cooling medium flow α increases to 30°, its further increase to 45° had no significant effect. With water cooling, total heat transfer coefficient of PHFHE increased by 35%, at the air cooling - by 15%. Angle 30° can be considered as an optimal for manufacturing of such PHFHE.

English abstract

Polymeric hollow fiber heat exchangers (PHFHE) are heat exchangers which use polymeric microchannels as the heat transfer surface. The main purpose of this work was to determine an optimal arrangement of polymeric hollow fibers in a PHFHE. The object of study was a bundle of parallel polymeric hollow fibers with an outer diameter of 0.8 mm. The heated working fluid flows inside the hollow fiber. Heat is transferred by a cooling medium from outside of the hollow fibers. Heat transfer coefficients on the outer surface of hollow fibers were obtained using computer modelling. For the case of water cooling a sharp heat transfer coefficient increase was observed as the angle between the hollow fiber position and the direction of the cooling medium flow α increases to 30°, its further increase to 45° had no significant effect. With water cooling, total heat transfer coefficient of PHFHE increased by 35%, at the air cooling - by 15%. Angle 30° can be considered as an optimal for manufacturing of such PHFHE.

Keywords

heat transfer, heat exchanger, polymeric hollow fiber, numerical modelling

Released

28.09.2016

Publisher

Inštitut za kovinske materiale in tehnologije

Location

Ljubljana, Slovenia

ISBN

978-961-94088-0-3

Book

24th INTERNATIONAL CONFERENCE ON MATERIALSAND TECHNOLOGY

Pages from

37

Pages to

37

Pages count

1

BibTex


@misc{BUT146793,
  author="Erik {Bartuli} and Miroslav {Raudenský}",
  title="Numerical Investigation of Heat Transfer on the Outer Surface of Polymeric Hollow Fibers",
  annote="Polymeric hollow fiber heat exchangers (PHFHE) are heat exchangers which use polymeric microchannels as the heat transfer surface. The main purpose of this work was to determine an optimal arrangement of polymeric hollow fibers in a PHFHE. The object of study was a bundle of parallel polymeric hollow fibers with an outer diameter of 0.8 mm. The heated working fluid flows inside the hollow fiber. Heat is transferred by a cooling medium from outside of the hollow fibers. Heat transfer coefficients on the outer surface of hollow fibers were obtained using computer modelling. For the case of water cooling a sharp heat transfer coefficient increase was observed as the angle between the hollow fiber position and the direction of the cooling medium flow α increases to 30°, its further increase to 45° had no significant effect. With water cooling, total heat transfer coefficient of PHFHE increased by 35%, at the air cooling - by 15%. Angle 30° can be considered as an optimal for manufacturing of such PHFHE.",
  address="Inštitut za kovinske materiale in tehnologije",
  booktitle="24th INTERNATIONAL CONFERENCE ON MATERIALSAND TECHNOLOGY",
  chapter="146793",
  howpublished="electronic, physical medium",
  institution="Inštitut za kovinske materiale in tehnologije",
  year="2016",
  month="september",
  pages="37--37",
  publisher="Inštitut za kovinske materiale in tehnologije",
  type="abstract"
}