POLYMERIC HOLLOW FIBERS SERVING AS A CROSS-FLOWHEAT EXCHANGER IN LIQUID-TO-GAS APPLICATIONS

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F23%3APU149051" target="_blank" >RIV/00216305:26210/23:PU149051 - isvavai.cz</a>

Result on the web

<a href="https://www.dl.astfe.org/conferences/tfec2023,7731ba772c4916c1,32311fb73963759d.html" target="_blank" >https://www.dl.astfe.org/conferences/tfec2023,7731ba772c4916c1,32311fb73963759d.html</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1615/TFEC2023.hex.045915" target="_blank" >10.1615/TFEC2023.hex.045915</a>

Result language

angličtina

Original language name

POLYMERIC HOLLOW FIBERS SERVING AS A CROSS-FLOWHEAT EXCHANGER IN LIQUID-TO-GAS APPLICATIONS

Original language description

Polymeric hollow fiber heat exchangers (PHFHEs) consist of hundreds of polymeric hollow fibers with an outer diameter of circa 1 mm. Even though polymers do not have outstanding thermal conductivity, PHFHEs are effective heat exchangers due to the tremendously low thickness of the fiber wall (approximately 0.1 mm). PHFHEs are heat exchangers with large packing density, i.e. they have a large heat transfer area concerning their volume. Their main advantages are 1) low weight, 2) easy machining and shaping, 3) extraordinary chemical and corrosion resistance, and 4) being more environmentally friendly than commonly used metal materials. Concretely, extruded polymer products around five times less CO2 than extruded aluminum. Presented polyamide PHFHE with 800 fibers with a length of 170 mm and an outer diameter of 1 mm was measured in an aerodynamic tunnel as a cross-flow heat exchanger. Hot water flowed inside the fibers with an inlet temperature of 50° C with a varying flow rate between 20 and 150 l·h−1. The ventilator inside the tunnel induced the airflow with various velocities (2, 4, and 6 m·s−1). The thermal performance and air pressure drop were evaluated based on experiments. Results were further compared with the conventional aluminium heat exchanger of similar size. In all cases, the thermal performance of the plastic alternative was at least 5% higher. Concretely, it varied between 340 and 1000 W. The highest value corresponds to the flow rate of 150 l·h−1 and air velocity of 6 m·s−1.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20303 - Thermodynamics

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)

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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

7

Pages from-to

1473-1479

Publisher name

Neuveden

Place of publication

neuveden

Event location

College Park

Event date

Mar 26, 2023

Type of event by nationality

CST - Celostátní akce

UT code for WoS article

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