FOULING OF POLYMERIC HOLLOW FIBER HEAT EXCHANGER BY ASHRAE 52.1 TEST DUST

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F17%3APU124185" target="_blank" >RIV/00216305:26210/17:PU124185 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

FOULING OF POLYMERIC HOLLOW FIBER HEAT EXCHANGER BY ASHRAE 52.1 TEST DUST

Popis výsledku v původním jazyce

Thermal effectiveness of heat exchangers working in contaminated conditions is negatively affected by fouling. Considering HVAC-R (heating, ventilation and air conditioning) or automotive applications, outdoor or domestic dust can be defined as main source of fouling. The heat exchanger made of polymeric hollow fibers was designed and tested in conditions typical for indoor fancoil operation, namely room temperature air (20 °C) flowing through the hot water coil (water inlet 50 °C) with low velocity (1.5 m/s). ASHRAE test dust was used as recommended type of foulant to model domestic dust presence. It was found that the ASHRAE Dust 52.1 has a very significant impact on the pressure drop and heat transfer. Air-side pressure drop rises 191% and overall heat transfer coefficient decreased to 62% for a dust injection of 250g (4000 g/m2). Decrease of heat transfer rate of heat exchanger was influenced mainly by clogging the frontal area because the first layers were significantly more than deeper layers. S

Název v anglickém jazyce

FOULING OF POLYMERIC HOLLOW FIBER HEAT EXCHANGER BY ASHRAE 52.1 TEST DUST

Popis výsledku anglicky

Thermal effectiveness of heat exchangers working in contaminated conditions is negatively affected by fouling. Considering HVAC-R (heating, ventilation and air conditioning) or automotive applications, outdoor or domestic dust can be defined as main source of fouling. The heat exchanger made of polymeric hollow fibers was designed and tested in conditions typical for indoor fancoil operation, namely room temperature air (20 °C) flowing through the hot water coil (water inlet 50 °C) with low velocity (1.5 m/s). ASHRAE test dust was used as recommended type of foulant to model domestic dust presence. It was found that the ASHRAE Dust 52.1 has a very significant impact on the pressure drop and heat transfer. Air-side pressure drop rises 191% and overall heat transfer coefficient decreased to 62% for a dust injection of 250g (4000 g/m2). Decrease of heat transfer rate of heat exchanger was influenced mainly by clogging the frontal area because the first layers were significantly more than deeper layers. S

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20303 - Thermodynamics

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

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