Process Simulating of Heat Transfer in High-temperature Thermocouples

Abstract

Abstract. Numerical research of integral characteristics of process of heattransfer in sensitive elements of R, A and B types thermocouples in case of measurement of high temperatures (more than 900 K) is executed. Theoretical dependences of minimum necessary duration of heating up of the thermocouple on value of temperature on boundary of a sensitive element are received. It is shown the thermocouple of R type requires bigger time of heating for obtaining satisfactory accuracy of measurements. Temperature fields in sensitive elements of the specified thermocouples are received. It is shown that distribution of temperature on the thermocouple not linearly and has similar character for the researched thermocouples.

Influence of Radiation and Convective Types of Heat Exchange on the Necessary Duration of Temperature Measurement by Thermocouples

“…It is set [4,5] that the sensor mounting mode on the equipment has significant effect on an inertance of operation of primary transformers of temperature. However, heating up conditions also influence integral characteristics of process of heating.…”