Sublimation behavior of annular frost layer by impinging jet flow

Hideo Inaba; Akihiko Horibe; Naoki Takamoto; Yoshiaki Kawakami; Seishi Imai

doi:10.1299/kikaib.66.650_2661

Sublimation behavior of annular frost layer by impinging jet flow

Hideo Inaba, Akihiko Horibe, Naoki Takamoto, Yoshiaki Kawakami, Seishi Imai

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

Abstract

The present paper has dealt with a new method of defrosting by using the frost sublimation phenomenon which occurs below the triple point of water (273.16 K, 610.5 Pa). The present experimental study has focussed to examine the mass transfer of the annular frost layer developed on a cooling pipe exposed to an impinging jet flow. Morphology of the frost layer during sublimating was observed by using a CCD camera. It was understood that the mass flux of the frost layer increased with increasing the jet flow velocity and the difference of the mass concentration of water vapor between the frost surface and the inpinging jet flow. The nondimensional correlation equations of mass transfer of defrosting were derived as functions of various parameters.

Original language	English
Pages (from-to)	2661-2668
Number of pages	8
Journal	Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume	66
Issue number	650
DOIs	https://doi.org/10.1299/kikaib.66.650_2661
Publication status	Published - Oct 2000
Externally published	Yes

Keywords

Defrost
Frost layer
Impinging jet flow
Mass transfer
Sublimation

ASJC Scopus subject areas

Condensed Matter Physics
Mechanical Engineering

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10.1299/kikaib.66.650_2661

Cite this

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abstract = "The present paper has dealt with a new method of defrosting by using the frost sublimation phenomenon which occurs below the triple point of water (273.16 K, 610.5 Pa). The present experimental study has focussed to examine the mass transfer of the annular frost layer developed on a cooling pipe exposed to an impinging jet flow. Morphology of the frost layer during sublimating was observed by using a CCD camera. It was understood that the mass flux of the frost layer increased with increasing the jet flow velocity and the difference of the mass concentration of water vapor between the frost surface and the inpinging jet flow. The nondimensional correlation equations of mass transfer of defrosting were derived as functions of various parameters.",

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AU - Inaba, Hideo

AU - Horibe, Akihiko

AU - Takamoto, Naoki

AU - Kawakami, Yoshiaki

AU - Imai, Seishi

PY - 2000/10

Y1 - 2000/10

N2 - The present paper has dealt with a new method of defrosting by using the frost sublimation phenomenon which occurs below the triple point of water (273.16 K, 610.5 Pa). The present experimental study has focussed to examine the mass transfer of the annular frost layer developed on a cooling pipe exposed to an impinging jet flow. Morphology of the frost layer during sublimating was observed by using a CCD camera. It was understood that the mass flux of the frost layer increased with increasing the jet flow velocity and the difference of the mass concentration of water vapor between the frost surface and the inpinging jet flow. The nondimensional correlation equations of mass transfer of defrosting were derived as functions of various parameters.

AB - The present paper has dealt with a new method of defrosting by using the frost sublimation phenomenon which occurs below the triple point of water (273.16 K, 610.5 Pa). The present experimental study has focussed to examine the mass transfer of the annular frost layer developed on a cooling pipe exposed to an impinging jet flow. Morphology of the frost layer during sublimating was observed by using a CCD camera. It was understood that the mass flux of the frost layer increased with increasing the jet flow velocity and the difference of the mass concentration of water vapor between the frost surface and the inpinging jet flow. The nondimensional correlation equations of mass transfer of defrosting were derived as functions of various parameters.

KW - Defrost

KW - Frost layer

KW - Impinging jet flow

KW - Mass transfer

KW - Sublimation

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Sublimation behavior of annular frost layer by impinging jet flow

Abstract

Keywords

ASJC Scopus subject areas

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