Measurement of the defrost process

William F. Mohs, Francis A. Kulacki

Research output: Chapter in Book/Report/Conference proceedingChapter


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 languageEnglish (US)
Title of host publicationSpringerBriefs in Applied Sciences and Technology
PublisherSpringer Verlag
Number of pages28
StatePublished - 2015

Publication series

NameSpringerBriefs in Applied Sciences and Technology
ISSN (Print)2191-530X
ISSN (Electronic)2191-5318

Bibliographical note

Publisher Copyright:
© 2015, Springer International Publishing Switzerland.


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


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