Abstract
This paper reports on an experimental investigation on the temperature and water content distribution within the porous fibrous battings sandwiched by an inner and outer layer of thin covering fabrics using a novel sweating, guarded hot plate. Experimental results for four combinations out of two types fibrous battings (one hydrophobic and non-hygroscopic polyester and the other hydrophilic and hygroscopic viscose) and two types of covering fabrics (one highly permeable nylon fabric and the other less permeable laminated fabric) have been obtained. It was found that most of the changes in temperature distribution took place within 1/2 h of the tests and moisture absorption by the hygroscopic fibers affects the temperature distribution. The water content accumulates with time and higher water content was found at the outer regions than that at the inner regions of the battings. The accumulation and distribution of water content is a combined result of moisture absorption, condensation and liquid water movement. Further theoretical modeling based on the reported experimental results is needed in order to better understand the mechanism. © 2003 Elsevier Science Inc. All rights reserved.
| Original language | English |
|---|---|
| Pages (from-to) | 723-729 |
| Number of pages | 7 |
| Journal | Experimental Thermal and Fluid Science |
| Volume | 27 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 1 Jan 2003 |
Keywords
- Condensation
- Heat transfer
- Phase change
- Porous fibrous insulation
- Water content
ASJC Scopus subject areas
- General Chemical Engineering
- Nuclear Energy and Engineering
- Aerospace Engineering
- Mechanical Engineering
- Fluid Flow and Transfer Processes