Measurement of the defrost process

William F. Mohs; Francis A. Kulacki

doi:10.1007/978-3-319-20508-3_5

Measurement of the defrost process

William F. Mohs, Francis A. Kulacki

Mechanical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Chapter

Abstract

Quantitative and visual data on defrost are presented. The data base comprises normal and in plane images of the defrost process over a range of ambient temperature, dew point, and surface temperature. Twelve frost layers are created at prescribed surface temperature, dew point, and ambient temperature. Melting is initiated by application of heating on the frosted surface. Predictions of the multistage defrost model developed in Chap. 3 are compared to the reduced data where possible, and empirically based relations for heat and mass transfer are developed. Assumptions used to simplify the differential equations for coupled heat and mass transfer in Chap. 3 are validated by the measurements. Overall defrost efficiency is proportional to initial frost thickness.

Original language	English (US)
Title of host publication	SpringerBriefs in Applied Sciences and Technology
Publisher	Springer Verlag
Pages	57-84
Number of pages	28
Edition	9783319205076
DOIs	https://doi.org/10.1007/978-3-319-20508-3_5
State	Published - 2015

Publication series

Name	SpringerBriefs in Applied Sciences and Technology
Number	9783319205076
ISSN (Print)	2191-530X
ISSN (Electronic)	2191-5318

Bibliographical note

Publisher Copyright:
© 2015, Springer International Publishing Switzerland.

Keywords

Defrost
Defrost efficiency
Frost growth
Frost profile
Frost properties
Heat transfer
Mass transfer

Publisher link

10.1007/978-3-319-20508-3_5

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abstract = "Quantitative and visual data on defrost are presented. The data base comprises normal and in plane images of the defrost process over a range of ambient temperature, dew point, and surface temperature. Twelve frost layers are created at prescribed surface temperature, dew point, and ambient temperature. Melting is initiated by application of heating on the frosted surface. Predictions of the multistage defrost model developed in Chap. 3 are compared to the reduced data where possible, and empirically based relations for heat and mass transfer are developed. Assumptions used to simplify the differential equations for coupled heat and mass transfer in Chap. 3 are validated by the measurements. Overall defrost efficiency is proportional to initial frost thickness.",

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AU - Kulacki, Francis A.

PY - 2015

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N2 - Quantitative and visual data on defrost are presented. The data base comprises normal and in plane images of the defrost process over a range of ambient temperature, dew point, and surface temperature. Twelve frost layers are created at prescribed surface temperature, dew point, and ambient temperature. Melting is initiated by application of heating on the frosted surface. Predictions of the multistage defrost model developed in Chap. 3 are compared to the reduced data where possible, and empirically based relations for heat and mass transfer are developed. Assumptions used to simplify the differential equations for coupled heat and mass transfer in Chap. 3 are validated by the measurements. Overall defrost efficiency is proportional to initial frost thickness.

AB - Quantitative and visual data on defrost are presented. The data base comprises normal and in plane images of the defrost process over a range of ambient temperature, dew point, and surface temperature. Twelve frost layers are created at prescribed surface temperature, dew point, and ambient temperature. Melting is initiated by application of heating on the frosted surface. Predictions of the multistage defrost model developed in Chap. 3 are compared to the reduced data where possible, and empirically based relations for heat and mass transfer are developed. Assumptions used to simplify the differential equations for coupled heat and mass transfer in Chap. 3 are validated by the measurements. Overall defrost efficiency is proportional to initial frost thickness.

KW - Defrost

KW - Defrost efficiency

KW - Frost growth

KW - Frost profile

KW - Frost properties

KW - Heat transfer

KW - Mass transfer

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ER -

Measurement of the defrost process

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