Research of Thermal Inertia of Thermotransducers for Measuring the Temperature of Gas Flows

Abstract

The temperature of gas flows is an important parameter during the research of heat and mass transfer processes, in the field of gas dynamics, as well as in manufacturing. Therefore, it is necessary to ensure a high level of requirements for the accuracy and reliability of the primary means of temperature measurement. The basic requirements are the simplicity of the design of the thermotransducer, its low thermal inertia, small dimensions, and high reliability during operation in aggressive environments at high temperature and pressure conditions. When measuring the temperature of gas flows, an important requirement is to ensure low thermal inertia. The presence of thermal inertia in thermotransducers leads to the fact that during the measurement of non-stationary temperatures of gas flows in conditions of variable heat transfer, dynamic errors occur, which make it necessary to conduct additional studies to take them into account. This paper provides a study of the thermal inertia of thermotransducers for measuring the temperature of gas flows depending on the type of flow temperature change.

Keywords

• thermotransducer
• methodology
• gas flow
• measurements
• temperature
• time of thermal reaction