Conductance And Conductivity
Thermal conductivity is measured using the Kawabata Thermolabo equipment. The instrument includes a BT box as a heat source and a water bath maintained at room temperature as a heat sink. Using 6gf/cm2, the fabric specimen is held between the heat source and heat sink having a 10°C temperature difference between the plate and sink. At steady state, power required is measured and thermal conductance is calculated as heat flow per temperature difference per unit area. Overall thermal conductivity is calculated as the product of the thermal conductance and fabric thickness (Conductivity = Conductance * Thickness @ 6 gf).