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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

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

  • 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

  • ISSN

    2379-1748

  • e-ISSN

  • 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