Sunday, March 3, 2019
THERMAL CONDUCTIVITY OF THE FABRIC
Thermal conductivity of the fabric: The ability of the fabric to transfer the heat from the higher temperature to the lower temperature surface by conduction is termed as the thermal conductivity of the fabric. The thermal conductivity of a fabric is the ratio of the heat energy transferred per second per unit surface area of the fabric to the temperature difference. It is measured in watts per second per square metre. It mainly depends upon the following factors:
GSM, yarn count and construction of the fabric: Since we know that the GSM, yarn count and construction of the fabric directly affect the airspace present in the fabric, therefore the fabric having minimum space poses poor thermal conductivity of the fabric because the lowest air space prevents to transfer the heat from higher temperature to the lower temperature.
Type of the material used: the type of material used also has a great concern with the type of material used. The fabric made of good heat conductor material always gives a better thermal conductivity of the fabric. The cotton fibre shows better thermal conductivity than wool fibre. The fabric made of continuous filament yarn shows better thermal conductivity than staple yarn. The man-made fibres show better thermal conductivity than natural fibres.
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