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

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F18%3APU127974" target="_blank" >RIV/00216305:26210/18:PU127974 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.21495/91-8-117" target="_blank" >http://dx.doi.org/10.21495/91-8-117</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.21495/91-8-117" target="_blank" >10.21495/91-8-117</a>

Result language
angličtina
Original language name
Condensation on the Outer Surface of Polymer Hollow Fiber Heat Exchangers and its Influence to the Heat Transfer
Original language description
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.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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