Study on the Preparation and Heat Transfer Characteristics of Temperature Sensitive Magnetic Fluid

Water-based temperature sensitive magnetic fluid and kerosene-based temperature sensitive magnetic fluid are prepared by using chemical co-precipitation method. The effects of magnetic particle concentration, magnetic field strength, and temperature on its thermal conductivity and viscosity were Studied. The results show that the thermal conductivity of the fluid is greatly increased by addition of magnetic particles. The thermal conductivity of water-based magnetic fluid with a concentration of 10% is increased 27.3% compared with that of deionized water; and the thermal conductivity of kerosene-based magnetic fluid with concentration of 10% is increased 128.8% higher than that of kerosene based-liquid. An experimental platform for the cooling loop is set up to verify the starting time and heat transfer characteristics of the developed magnetic fluid.