Detail publikace

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

BROŽOVÁ, T. BARTULI, E. RAUDENSKÝ, M.

Anglický název

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

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

en

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova anglicky

Hollow fiber; Heat exchanger; Heat transfer; Condensation

Vydáno

14.05.2018

Nakladatel

ITAM CAS

Místo

Praha

ISBN

978-80-86246-88-8

Kniha

Engineering Mechanics 2018

Strany od–do

117–120

Počet stran

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",
  booktitle="Engineering Mechanics 2018",
  year="2018",
  month="May",
  pages="117--120",
  publisher="ITAM CAS",
  address="Praha",
  isbn="978-80-86246-88-8"
}