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The Effect of Surface Wettability on the Defrost Process pp 23–39Cite as

A Model of the Defrost Process

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Part of the book series: SpringerBriefs in Applied Sciences and Technology ((BRIEFSTHERMAL))

Abstract

A model of frost melting is developed from fundamental analysis of the heat and mass transfer. The melting model envisions three stages as the frosted surface is heated: absorption of the melt water by diffusion, accumulation of the melt water, and draining of the melt water along the surface. The three stages of melting are connected physically, but the analysis of each involves a particular set of assumptions and use of a wide range parameters and physical laws. Surface wettability enters the analysis as a factor in the draining stage. The possibility of frost slumping is expressed through a criterion based on a static force balance in which contact angel is an implicit factor.

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Notes

  1. 1.

    Water saturation is the volume fraction of water in the pore volume.

  2. 2.

    The contact angles formed by expanding and contracting the liquids are referred to as the advancing contact angle and the receding contact angle respectively.

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Authors and Affiliations

  1. Graduate School at Shenzhen, Tsinghua University, Shenzchen, China

    Yang Liu

  2. Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN, USA

    Francis A. Kulacki

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  1. Yang Liu
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  2. Francis A. Kulacki
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Liu, Y., Kulacki, F.A. (2019). A Model of the Defrost Process. In: The Effect of Surface Wettability on the Defrost Process. SpringerBriefs in Applied Sciences and Technology(). Springer, Cham. https://doi.org/10.1007/978-3-030-02616-5_3

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  • DOI: https://doi.org/10.1007/978-3-030-02616-5_3

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-02615-8

  • Online ISBN: 978-3-030-02616-5

  • eBook Packages: EngineeringEngineering (R0)

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