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A model of hot-gas defrosting of evaporators. 1. Heat and mass transfer theory.

Author(s) : KRAKOW K. I., YAN L., LIN S.

Summary

Hot-gas defrosting is a complex process involving spatial and time variations as well as many indeterminate factors. In order to model the process, it has been idealized by subdividing it into four stages depending on the outside surface condition, preheating, melting, vaporizing, and dry heating. Each element of a coil may pass through three or four stages. An algorithm for the solution of the equations of the idealized process has been developed. In addition to coil geometry and initial conditions, several heat and mass transfer parameters which are not readily available from the literature are to be calculated.

Details

  • Original title: A model of hot-gas defrosting of evaporators. 1. Heat and mass transfer theory.
  • Record ID : 1993-2014
  • Languages: English
  • Publication date: 1992
  • Source: Source: ASHRAE Trans.
    vol. 98; n. 1; 451-461; 5 fig.; 22 ref.; discuss.
  • Document available for consultation in the library of the IIR headquarters only.

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