Abstract
Temperature wave analysis (TWA) is a technique to observe the phase shift and the amplitude decay of temperature wave which is generated by a. c. Joule heating and propagating in the thickness direction of specimen by using a sensitive temperature sensor with negligible heat capacity. In this study a new application method of TWA to obtain thermal conductivity of liquid with a probe sensor was introduced. The theoretical background and the experimental set-up were shown. Thermal property of liquid at 25°C by TWA was in good agreement with the literature value.