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Air filtration with moisture and frosting phase changes in fiberglass insulation. 1. Experiment. 2. Model validation.

Author(s) : MITCHELL D. R., TAO Y. X., BESANT R. W.

Type of article: Article

Summary

A laboratory apparatus has been constructed to subject fiberglass insulation to one-dimensional moist airflow and heat transfer with temperatures from 20 to -20 deg C. The experimental results, which are typical of cold climate building envelope applications, indicated that the adsorption process had a significant influence on the temperature distribution over much of the warm portion of the slab during air exfiltration shortly after the tests began. Furthermore, for all of the air exfiltration tests carried out, the majority of the moisture and frost accumulation was within the insulation slab adjacent to the cold surface. For air infiltration, it was discovered that the drying rate was substantially higher for lower airflow rates. A numerical simulation was validated for each flow direction (exfiltration/infiltration), based on the experimental temperature and moisture accumulation results obtained in part 1 of the study.

Details

  • Original title: Air filtration with moisture and frosting phase changes in fiberglass insulation. 1. Experiment. 2. Model validation.
  • Record ID : 1996-0807
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 38 - n. 9
  • Publication date: 1995/06

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