Abstract
In the present study, a natural secondary refrigerant was investigated using ethanol-water mixture. If a fluid latent heat material is to be used in a heat exchanger system in practice, it is of great significance to examine the fluidity of that two-phase substance consisting of liquid and solid phases. Therefore, in the present experiment, we selected the torque obtained in the stirring production process as the target value of torque for assessing the fluidity of the liquid-solid two-phase fluid. In addition, we also attempted to estimate coefficient of viscosity indirectly by establishing a relationship between the viscosity and torque for silicon oil of known viscosity.
