An Experimental Approach of the Hot Wire Method for Measurement of the Thermal Conductivity

The paper describes an in house made experimental set-up that measures the thermal conductivity in liquids on the basis of the Transient Hot Wire Method. The theoretical principle is firstly presented, and then our original experimental approach is described. The hardware as well as the software implementation of the measurement method reveals the simple design configuration of the measurement set-up that contains high performance inexpensive components. It is also simple to use and well suited for research laboratories, data being stored either in text, or in graphical files. Finally, based on experimental results, the measurement accuracy and sensibility performances are discussed and compared with other instruments in literature.