ISSN Online: 2377-424X
ISBN Print: 0-89116-559-2
International Heat Transfer Conference 8
THERMAL CONDUCTIVITY OF AQUEOUS LiCl MEASURED BY TRANSIENT HOT WIRE METHOD
Abstrakt
Thermal conductivities have been measured of aqueous solution of lithium chloride, which is often used as an working fluid for a chemical heat pump, by the transient hot wire method with a bare platinum wire. In this case, it was thought that the method worked incorrectly because the electrical current to heat the wire would partly flow off the wire into the solution. The authors previously discussed the case by estimating the effects of some factors; the electrical conductivity and its temperature coefficient of the solution, and the electrical capacity of double layer at the surface of hot wire. The result was that the hot wire method might be applicable when it was used with the input less than the "decomposition voltage" of the solution. This paper presents the experimental evidence of the applicability. With the input lower than 0.2 V, there is no evidence of leakage. A sort of pH indicator shows no electrode reaction. The value of thermal conductivity coincide with those already published. The applicability makes the method widely useful.