Sublimation behavior of annular frost layer by impinging jet flow

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

doi:10.1299/jsmeb.45.322

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 deals with a new method of defrosting using the frost sublimation phenomenon, which occurs below the triple point of water (273.16 K, 610.5 Pa). The present experimental study examines the mass transfer of the annular frost layer developed on a cooling pipe exposed to an impinging jet flow. The morphology of the frost layer during sublimation was observed using a digital video recorder. It was understood that the mass flux of the frost layer increased with increasing the jet flow velocity and the difference in the mass concentration of water vapor between the frost surface and the impinging jet flow. The non-dimensional correlation equations of mass transfer of defrosting were derived as functions of various parameters.

Original language	English
Pages (from-to)	322-330
Number of pages	9
Journal	JSME International Journal, Series B: Fluids and Thermal Engineering
Volume	45
Issue number	2
DOIs	https://doi.org/10.1299/jsmeb.45.322
Publication status	Published - May 2002

Keywords

Defrost
Frost layer
Impinging jet flow
Mass transfer
Sublimation

ASJC Scopus subject areas

Mechanical Engineering
Physical and Theoretical Chemistry
Fluid Flow and Transfer Processes

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10.1299/jsmeb.45.322

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abstract = "The present paper deals with a new method of defrosting using the frost sublimation phenomenon, which occurs below the triple point of water (273.16 K, 610.5 Pa). The present experimental study examines the mass transfer of the annular frost layer developed on a cooling pipe exposed to an impinging jet flow. The morphology of the frost layer during sublimation was observed using a digital video recorder. It was understood that the mass flux of the frost layer increased with increasing the jet flow velocity and the difference in the mass concentration of water vapor between the frost surface and the impinging jet flow. The non-dimensional 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 - 2002/5

Y1 - 2002/5

N2 - The present paper deals with a new method of defrosting using the frost sublimation phenomenon, which occurs below the triple point of water (273.16 K, 610.5 Pa). The present experimental study examines the mass transfer of the annular frost layer developed on a cooling pipe exposed to an impinging jet flow. The morphology of the frost layer during sublimation was observed using a digital video recorder. It was understood that the mass flux of the frost layer increased with increasing the jet flow velocity and the difference in the mass concentration of water vapor between the frost surface and the impinging jet flow. The non-dimensional correlation equations of mass transfer of defrosting were derived as functions of various parameters.

AB - The present paper deals with a new method of defrosting using the frost sublimation phenomenon, which occurs below the triple point of water (273.16 K, 610.5 Pa). The present experimental study examines the mass transfer of the annular frost layer developed on a cooling pipe exposed to an impinging jet flow. The morphology of the frost layer during sublimation was observed using a digital video recorder. It was understood that the mass flux of the frost layer increased with increasing the jet flow velocity and the difference in the mass concentration of water vapor between the frost surface and the impinging jet flow. The non-dimensional 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

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