Heat-triggered two-phase flow maldistribution in a micromachined cryogenic cooler

H. S. Cao; S. Vanapalli; H. J. Holland; C. H. Vermeer; H. J.M. ter Brake

doi:10.1016/j.cryogenics.2020.103026

Heat-triggered two-phase flow maldistribution in a micromachined cryogenic cooler

H. S. Cao^*, S. Vanapalli, H. J. Holland, C. H. Vermeer, H. J.M. ter Brake

^*Corresponding author for this work

Energy Materials Systems

Research output: Contribution to journal › Article › Academic › peer-review

3 Citations (Scopus)

77 Downloads (Pure)

Abstract

Counter flow heat exchangers (CFHXs) are essential elements of micromachined Joule–Thomson (JT) cryogenic coolers. The performance of CFHXs has a crucial influence on the overall behavior of JT microcoolers. Flow maldistribution, especially those with phase change, can adversely affect the performance of JT microcoolers. However, the underlying mechanisms of flow maldistribution for two-phase flow in JT microcoolers remain unexplored. Here we report the heat triggered switching of two-phase flow maldistribution in the heat exchanger of JT microcoolers by both microscopic observations and temperature measurements. A measure against flow maldistribution is proposed.

Original language	English
Article number	103026
Journal	Cryogenics
Volume	106
DOIs	https://doi.org/10.1016/j.cryogenics.2020.103026
Publication status	Published - Mar 2020

Keywords

UT-Hybrid-D
Heat transfer
Maldistribution
Microcooler
Two-phase flow
Heat exchanger
22/2 OA procedure

Access to Document

10.1016/j.cryogenics.2020.103026

1-s2.0-S0011227519303923-mainFinal published version, 1.79 MBLicence: Taverne

Cite this

@article{6f8dba55f1714f84bdbbe3563c122034,

title = "Heat-triggered two-phase flow maldistribution in a micromachined cryogenic cooler",

abstract = "Counter flow heat exchangers (CFHXs) are essential elements of micromachined Joule–Thomson (JT) cryogenic coolers. The performance of CFHXs has a crucial influence on the overall behavior of JT microcoolers. Flow maldistribution, especially those with phase change, can adversely affect the performance of JT microcoolers. However, the underlying mechanisms of flow maldistribution for two-phase flow in JT microcoolers remain unexplored. Here we report the heat triggered switching of two-phase flow maldistribution in the heat exchanger of JT microcoolers by both microscopic observations and temperature measurements. A measure against flow maldistribution is proposed.",

keywords = "UT-Hybrid-D, Heat transfer, Maldistribution, Microcooler, Two-phase flow, Heat exchanger, 22/2 OA procedure",

author = "Cao, {H. S.} and S. Vanapalli and Holland, {H. J.} and Vermeer, {C. H.} and {ter Brake}, {H. J.M.}",

note = "Elsevier deal",

year = "2020",

month = mar,

doi = "10.1016/j.cryogenics.2020.103026",

language = "English",

volume = "106",

journal = "Cryogenics",

issn = "0011-2275",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Heat-triggered two-phase flow maldistribution in a micromachined cryogenic cooler

AU - Cao, H. S.

AU - Vanapalli, S.

AU - Holland, H. J.

AU - Vermeer, C. H.

AU - ter Brake, H. J.M.

N1 - Elsevier deal

PY - 2020/3

Y1 - 2020/3

N2 - Counter flow heat exchangers (CFHXs) are essential elements of micromachined Joule–Thomson (JT) cryogenic coolers. The performance of CFHXs has a crucial influence on the overall behavior of JT microcoolers. Flow maldistribution, especially those with phase change, can adversely affect the performance of JT microcoolers. However, the underlying mechanisms of flow maldistribution for two-phase flow in JT microcoolers remain unexplored. Here we report the heat triggered switching of two-phase flow maldistribution in the heat exchanger of JT microcoolers by both microscopic observations and temperature measurements. A measure against flow maldistribution is proposed.

AB - Counter flow heat exchangers (CFHXs) are essential elements of micromachined Joule–Thomson (JT) cryogenic coolers. The performance of CFHXs has a crucial influence on the overall behavior of JT microcoolers. Flow maldistribution, especially those with phase change, can adversely affect the performance of JT microcoolers. However, the underlying mechanisms of flow maldistribution for two-phase flow in JT microcoolers remain unexplored. Here we report the heat triggered switching of two-phase flow maldistribution in the heat exchanger of JT microcoolers by both microscopic observations and temperature measurements. A measure against flow maldistribution is proposed.

KW - UT-Hybrid-D

KW - Heat transfer

KW - Maldistribution

KW - Microcooler

KW - Two-phase flow

KW - Heat exchanger

KW - 22/2 OA procedure

U2 - 10.1016/j.cryogenics.2020.103026

DO - 10.1016/j.cryogenics.2020.103026

M3 - Article

AN - SCOPUS:85078216794

SN - 0011-2275

VL - 106

JO - Cryogenics

JF - Cryogenics

M1 - 103026

ER -

Heat-triggered two-phase flow maldistribution in a micromachined cryogenic cooler

Abstract

Keywords

Access to Document

Fingerprint

Cite this