Heating Rate Dt/dt Measurements Developed From In-situ Thermocouples Using A Voltage-rate Interface

摘要

This paper describes results for a heating/cooling rate, dT/dt (℃/s) sensor developed for transient heat conduction, material sciences and health-management studies as well as for signal discrimination. The heating/cooling rate is a natural property for determining transient, heat fluxes, q~n (W/m~2). This paper (ⅰ) describes the voltage-rate interface and its subsequent conversion to heating rate; and, (ⅱ) presents experimental results indicating the merit and accuracy of the concept through a heat transfer experiment. Finally, it is demonstrated that a rate measurement has the additional benefit of amplifying small imperfections. This is illustrated when investigating the electrical signal generated by a thermocouple that is constructed with two junctions.