THERMAL DIFFUSIVITY OF NANOFLUID MEASUREMENT EQUIPMENT

摘要

PURPOSE: A device for measuring thermal diffusion of nanofluid is provided to reduce the error between calculated and real thermal diffusion rates of nanofluid using a bridge circuit measuring the inner temperature of nanofluid, which is separated from a heating wire applying heat to nanofluid and a heat generating unit. CONSTITUTION: A device(100) for measuring thermal diffusion of nanofluid comprises a heating wire(110), a bridge circuit(120) and an amplifying unit(130). The heating wire receives power and is inserted into nanofluid(11) to apply heat. The bridge circuit is arranged so that its part is separated from the heating wire. Voltage difference occurs in the bridge circuit based on resistance depending on heat diffused from the heating wire. The amplifying unit receives the voltage difference from the bridge circuit. The amplifying unit amplifies and outputs the voltage difference. The bridge circuit comprises a heat sensor(122), a first loop(121) and a second loop(124). The heat sensor changes resistance depending on heat diffused from the heating wire.