Hot Disk Thermal Constants Analyzer

Hot Disk Analyzer CloseupThe Hot Disk Thermal Constants Analyzer is used to measure the thermal conductivity of aerogels.  The system consists of a source meter, a high sensitivity resistance sensor, and a computational unit.   Two aerogel samples are placed on either side of an electrically conducting pattern of wires in the form of a double spiral sandwiched between layers of Kapton film.  The sensor is then heated by a constant electric current over a short period of time.  The heat dissipates into the surrounding aerogel and causes a decrease in the temperature of the sensor which is read by the instrumentation.  The computational unit then analyzes this data and presents a value for the thermal conductivity of the aerogel samples.