Measurement of Thermal Conductivities of Freon-12 and Freon-22 at High Pressure by Unsteady Hot Wire Method

비정상 열선법에 의한 Freon-12와 Freon-22의 고압상태에서의 열전도율측정

Thermal conductivities of Freon-12 and Freon-22 were measured at room temperature up to 35 MPa with the aid of transient hot wire method. Glycerin was used to check the performance of the experimental equipment. The thermal conductivities of Freon-12 and Freon-22 at the maximum pressure, 35 MPa, were increased by 25% approximately for those at satufated state.