Abstract
Currently, development and improvement of ventilation and air conditioning systems efficiency is related with the use of new devices for air transportation and distribution. These include micro perforated air distributors made of textile which are installed both at the level of the indoor working area and directly near the workplace. Air terminals of this type are made of polymer composite material – fabric based on synthetic fibers. To make such a fabric, modern laser technology to produce micro-holes is used which allows burning in the fabric holes of a given diameter and pitch with melted edges. Results of studies on shape and size of micro-holes in the micro perforated textile terminal are described in this paper. A conclusion is made that the micro–holes shape is irregular and the holes boundaries have uneven edges. Data on micro-holes area range are given. Actual diameter of the micro-holes declared by manufacturer is defined more exactly.
Highlights
Air quality is the most important indicator of the indoor working area microclimate which affecting productivity, well-being and individual comfort of a person [1-8]
Analysis of the works carried our by number of authors [12-15] leads to the conclusion that there are attempts to experimentally and theoretically study air distribution caused by textile air terminals, but the question remains unexplored concerning supply of air to the premises by means of textile terminals through micro holes
In order to study shape and size of micro-holes made with a laser in the fabric of a textile terminal, microscopic analysis was carried out, with participation of the Scientific and Educational Center "Nanomaterials and Nanotechnology" of Moscow University of civil engineering (MGSU), using SENTERRA dispersion Raman spectrometer combined with optical microscope (Fig. 2)
Summary
Air quality is the most important indicator of the indoor working area microclimate which affecting productivity, well-being and individual comfort of a person [1-8]. One of the technologies is production of micro perforated textile terminals using polymer composite material – fabrics based on synthetic fibers. Modern laser technologies allow burning holes in textile material with a given pitch and diameter. One of the advantages of the micro perforated textile terminal is possibility to supply air in the form of micro-jets with a small velocity directly into the human breathing zone [9]. Low air velocities in the breathing zone contribute to improving health of a person in the room and forming the required microclimate parameters and specified gas regime, taking into account variative external and internal factors [10-11]. Analysis of the works carried our by number of authors [12-15] leads to the conclusion that there are attempts to experimentally and theoretically study air distribution caused by textile air terminals, but the question remains unexplored concerning supply of air to the premises by means of textile terminals through micro holes
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