Share

LIQUID DIFFUSION IN FIBROUS INSULATION.

Author(s) : MOTAKEF S., MASRI M. A. el-

Type of article: Article

Summary

VAPOUR CONDENSATION IN INSULATION DEGRADES ITS PHYSICAL AND THERMAL PROPERTIES. THE DIFFUSION OF LIQUID CAN BE CAUSED BY SEVERAL DRIVING POTENTIALS. A MODEL FOR ISOTHERMAL LIQUID TRANSPORT IN FIBROUS INSULATION IS PRESENTED. THE DIFFUSION OF LIQUID FROM ONE LAYER TO THE NEXT IS CONTROLLED BY LIQUID DIFFUSION ALONG THE LAYERS AND THE TORTUOSITY FACTOR. DIFFUSION ALONG THE LAYERS IS CAUSED BY THE SUCTION POTENTIAL AND RETARDED BY THE VISCOUS FORCES. A MODEL FOR TRANSIENT DIFFUSION IN TERMS OF THE FIVE MEDIUM PROPERTIES IS OBTAINED. DATA ON LIQUID DIFFUSION UNDER ISOTHERMAL CONCENTRATION GRADIENTS FOR COMMERCIAL FIBERGLASS INSULATIONS HAVE BEEN ACQUIRED. THE EXPERIMENTAL DATA SHOW CONSISTENT AGREEMENT WITH THE MODEL PREDICTIONS.

Details

  • Original title: LIQUID DIFFUSION IN FIBROUS INSULATION.
  • Record ID : 1986-0072
  • Languages: English
  • Source: J. Heat Transf. - vol. 107 - n. 2
  • Publication date: 1985/05
  • Document available for consultation in the library of the IIR headquarters only.

Links


See other articles in this issue (9)
See the source

Indexing