HEAT TRANSFER SURFACES MADE OF POLYMERIC HOLLOW FIBERS - FEATURES AND UTILIZATION
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F22%3APU145910" target="_blank" >RIV/00216305:26210/22:PU145910 - isvavai.cz</a>
Result on the web
<a href="https://dl.astfe.org/conferences/tfec2022,702cc3847cdb11f5,1fe0574f2fefa724.html" target="_blank" >https://dl.astfe.org/conferences/tfec2022,702cc3847cdb11f5,1fe0574f2fefa724.html</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1615/TFEC2022.mpm.041778" target="_blank" >10.1615/TFEC2022.mpm.041778</a>
Alternative languages
Result language
angličtina
Original language name
HEAT TRANSFER SURFACES MADE OF POLYMERIC HOLLOW FIBERS - FEATURES AND UTILIZATION
Original language description
Polymeric hollow fibers are made by extrusion from partially molten material. The fibers used in this experimental study have an outer diameter from 0.8 to 1.3 mm. The thickness of the wall is typically about 0.1 mm. Fibers of this size can withstand boost pressures over 50 bar. From a heat transfer point of view, the thinness of the wall, which eliminates low thermal conductivity, and the fact that liquid flow inside fibers is laminar, which causes a constant Nusselt number, is advantageous. The heat transfer coefficient inside fibers is high because of their small dimensions, and it is velocity independent. The fibers are light, flexible and chemically and corrosion resistant. The smooth polymeric surfaces are fouling resistant both to dust in gas, and to organic and inorganic pollutants in liquids. The paper presents results of laboratory and industrial testing of heat exchangers with hollow fibers. Shell and tube heat exchangers are typical for liquid / liquid application. Similar units are presented here in steam / water high temperature application with output up to 50 kW. Smooth polymeric fibers in a vertical configuration are suitable for condensation of liquid from gas. The results of high temperature application of cooling of flue gas with condensation of aggressive liquid are shown. Recent tests study the use of polymeric heat exchangers in automotive. The case study shows the replacement of the classical aluminum car radiator with a polymeric radiator, and includes vehicle tests. Polymeric radiators require low air flow for equal thermal performance, and this can reduce the aerodynamic drag of the vehicle.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20303 - Thermodynamics
Result continuities
Project
<a href="/en/project/EF16_019%2F0000753" target="_blank" >EF16_019/0000753: Research centre for low-carbon energy technologies</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Sborník z konference Proceedings of the Thermal and Fluids Engineering Summer Conference
ISBN
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ISSN
2379-1748
e-ISSN
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Number of pages
9
Pages from-to
573-581
Publisher name
Neuveden
Place of publication
neuveden
Event location
Las Vegas
Event date
May 15, 2022
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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