ABSTRACT
The thermal conductivity of spun glass fibers has been measured as a function of gas pressure and temperature at an external load of 0.1 MPa. At room temperature the thermal conductivity of the evacuated fibers was as low as 1.6• 10−3W/(m•K). An analysis of the heat transfer modes revealed that solid conduction contributes with 0.6 • 10−3 W/(m•K) and radiative conduction with 1.0 • 10−3 W/(m•K) to the thermal conductivity at room temperature.
