Degradation of the performance of microchannel heat exchangers due to flow maldistribution

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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@article{7f63ca6d718d4cf7a65834625608e8b3,
title = "Degradation of the performance of microchannel heat exchangers due to flow maldistribution",
publisher = "Pergamon",
author = "Nielsen, {Kaspar Kirstein} and Kurt Engelbrecht and Dennis Christensen and Jensen, {Jesper Buch} and Anders Smith and Christian Bahl",
year = "2012",
doi = "10.1016/j.applthermaleng.2012.02.019",
volume = "40",
pages = "236--247",
journal = "Applied Thermal Engineering",
issn = "1359-4311",

}

RIS

TY - JOUR

T1 - Degradation of the performance of microchannel heat exchangers due to flow maldistribution

A1 - Nielsen,Kaspar Kirstein

A1 - Engelbrecht,Kurt

A1 - Christensen,Dennis

A1 - Jensen,Jesper Buch

A1 - Smith,Anders

A1 - Bahl,Christian

AU - Nielsen,Kaspar Kirstein

AU - Engelbrecht,Kurt

AU - Christensen,Dennis

AU - Jensen,Jesper Buch

AU - Smith,Anders

AU - Bahl,Christian

PB - Pergamon

PY - 2012

Y1 - 2012

N2 - The effect of flow maldistribution on the performance of microchannel parallel plate heat exchangers is <br/>investigated using an established single blow numerical model and cyclic steady-state regenerator <br/>experiments. It is found that as the variation of the individual channel thickness in a particular stack <br/>(heat exchanger) increases the actual performance of the heat exchanger decreases significantly, deviating <br/>from the expected nominal performance. We show that this is due to both the varying fluid flow <br/>velocities in each individual channel and the thermal cross talk between the channels transverse to the <br/>direction of the flow.

AB - The effect of flow maldistribution on the performance of microchannel parallel plate heat exchangers is <br/>investigated using an established single blow numerical model and cyclic steady-state regenerator <br/>experiments. It is found that as the variation of the individual channel thickness in a particular stack <br/>(heat exchanger) increases the actual performance of the heat exchanger decreases significantly, deviating <br/>from the expected nominal performance. We show that this is due to both the varying fluid flow <br/>velocities in each individual channel and the thermal cross talk between the channels transverse to the <br/>direction of the flow.

KW - Microchannels

KW - Flow maldistribution

KW - Thermal cross talk

KW - Parallel plates

U2 - 10.1016/j.applthermaleng.2012.02.019

DO - 10.1016/j.applthermaleng.2012.02.019

JO - Applied Thermal Engineering

JF - Applied Thermal Engineering

SN - 1359-4311

VL - 40

SP - 236

EP - 247

ER -