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