Utilization of Alambeta Apparatus in Predicting Thermal Properties of Single and Multiple Layers of Woven and Nonwoven Fabrics. | ||||
| MEJ- Mansoura Engineering Journal | ||||
| Article 20, Volume 20, Issue 1, March 1995, Page 1-10 PDF (372.03 K) | ||||
| Document Type: Research Studies | ||||
| DOI: 10.21608/bfemu.2021.160954 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| Adel Mohamed El-Habiby* | ||||
| Associate Professor of Textile Engineering Department, Faculty of Engineering, El-Mansoura University, Mansoura, Egypt. | ||||
| Abstract | ||||
| A new computer controlled device ALAMBET A to measure the thermal properties of flat woven and nonwoven textiles was developed at the technical University in Liberec. Within one measuring operation taking no more than two minutes it yields the values of thermal resistance, conductivity, and diffusivity thickness of the sample and its thermal - contact characteristic, the thermal absorbtivity expressing the warm - cool feeling of the fabric [4]. By means of this instrument the thermal parameters of up to five layers of identical woven and nonwoven fabrics were investigated. The following results were found : 1· Thermal resistance increases with the total thickness linear (for "NW" fabrics) or slower. The highest value exhibits "NW'' out of textile wasters the lowest PAD and Vs fabrics. 2· Thermal absorbtivity theoretically does not depend on the thickness [4]. The experiments confirm that thermal absorbtivity varies with the thickness unsubstantially. The highest increase (for eight layers of NW) presents 104.7%. 3- Thermal conductivity increases with the thickness substantially slower than linear [2]. The highest values of thermal conductivity exhibit PAD, then Vs and PES while the lower level belongs to "NW" out of textile wastes. | ||||
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