Publication detail

Condensation on the Outer Surface of Polymer Hollow Fiber Heat Exchangers and its Influence to the Heat Transfer

BROŽOVÁ, T. BARTULI, E. RAUDENSKÝ, M.

Original Title

Condensation on the Outer Surface of Polymer Hollow Fiber Heat Exchangers and its Influence to the Heat Transfer

English Title

Condensation on the Outer Surface of Polymer Hollow Fiber Heat Exchangers and its Influence to the Heat Transfer

Type

conference paper

Language

en

Original Abstract

Abstract: Condensation influences significantly the heat transfer. Describing its mechanism is necessary for better understanding and leads to its beneficial use in applications. The contribution deals with the condensation on the outer surface of polymer hollow fibers that are made of polypropylene with outer diameter 0.8 mm. These fibers form the heat exchanger with total amount 2660 fibers that are divided into 20 equivalent layers. The wall thickness is approximately 10% of outer diameter. The testing air properties were set at 27 °C and 50% relative humidity that are the typical conditions for such tests in air-conditioning technology. The study focuses on the influence of the gravity and the air speed. Therefore, the polymer hollow fibers heat exchanger (PHFHE) was placed in three different positions (vertical, horizontal, and 45°) and the air velocity were chosen as 1 m s-1 and 3 m s-1. The experiments shows that the PHFHE are able to stand up the conditions in air-conditioning applications. Moreover, they achieved the competitive results with common metal heat exchangers. The paper claims the perspective of PHFHE in air-conditioning technology.

English abstract

Abstract: Condensation influences significantly the heat transfer. Describing its mechanism is necessary for better understanding and leads to its beneficial use in applications. The contribution deals with the condensation on the outer surface of polymer hollow fibers that are made of polypropylene with outer diameter 0.8 mm. These fibers form the heat exchanger with total amount 2660 fibers that are divided into 20 equivalent layers. The wall thickness is approximately 10% of outer diameter. The testing air properties were set at 27 °C and 50% relative humidity that are the typical conditions for such tests in air-conditioning technology. The study focuses on the influence of the gravity and the air speed. Therefore, the polymer hollow fibers heat exchanger (PHFHE) was placed in three different positions (vertical, horizontal, and 45°) and the air velocity were chosen as 1 m s-1 and 3 m s-1. The experiments shows that the PHFHE are able to stand up the conditions in air-conditioning applications. Moreover, they achieved the competitive results with common metal heat exchangers. The paper claims the perspective of PHFHE in air-conditioning technology.

Keywords

Hollow fiber; Heat exchanger; Heat transfer; Condensation

Released

14.05.2018

Publisher

ITAM CAS

Location

Praha

ISBN

978-80-86246-88-8

Book

Engineering Mechanics 2018

Pages from

117

Pages to

120

Pages count

4

BibTex


@inproceedings{BUT147580,
  author="Tereza {Kůdelová} and Erik {Bartuli} and Miroslav {Raudenský}",
  title="Condensation on the Outer Surface of Polymer Hollow Fiber Heat Exchangers and its Influence to the Heat Transfer",
  annote="Abstract: 	Condensation influences significantly the heat transfer. Describing its mechanism is necessary for better understanding and leads to its beneficial use in applications. The contribution deals with the condensation on the outer surface of polymer hollow fibers that are made of polypropylene with outer diameter 0.8 mm. These fibers form the heat exchanger with total amount 2660 fibers that are divided into 20 equivalent layers. The wall thickness is approximately 10% of outer diameter. The testing air properties were set at 27 °C and 50% relative humidity that are the typical conditions for such tests in air-conditioning technology. The study focuses on the influence of the gravity and the air speed. Therefore, the polymer hollow fibers heat exchanger (PHFHE) was placed in three different positions (vertical, horizontal, and 45°) and the air velocity were chosen as 1 m s-1 and 3 m s-1. The experiments shows that the PHFHE are able to stand up the conditions in air-conditioning applications. Moreover, they achieved the competitive results with common metal heat exchangers. The paper claims the perspective of PHFHE in air-conditioning technology.",
  address="ITAM CAS",
  booktitle="Engineering Mechanics 2018",
  chapter="147580",
  doi="10.21495/91-8-117",
  howpublished="print",
  institution="ITAM CAS",
  year="2018",
  month="may",
  pages="117--120",
  publisher="ITAM CAS",
  type="conference paper"
}