Measurement of Thermal Conductivity and Volumetric Heat Capacity as a Function of Humidity and Temperature Using a Single Heated Wire

Băileșteanu, V.A. (2024)

A flow-independent gas property meter was developed to analyse two thermal properties of a gas, namely the thermal conductivity (k) and the volumetric heat capacity (ρcp). The sensor will be used to calibrate a gas flow sensor accordingly for the present gas. This paper shows how the two properties are influenced by ambient temperature and relative humidity in the case of air. The literature presents contradictory results. The experimental findings of this paper show that the ambient temperature has a considerable influence on thermal conductivity while the humidity plays a minor role. The volumetric heat capacity measurements were inconclusive and further research is required to understand the effects of ambient temperature and relative humidity on it.
101213_Băileșteanu_BA_EEMCS.pdf