| 摘要 |
In an electrical appliance, a thermal conductor includes a hollow heat-conducting member that has inner and outer walls confining an enclosed chamber therebetween, and a superconductor disposed in the chamber. A heat-insulating layer is provided on an outer peripheral surface of the outer wall. A temperature control device includes a thermoelectric unit disposed on and in thermal communication with the outer wall of the heat-conducting member. A control unit is connected to the thermoelectric unit and is operable so as to enable the thermoelectric unit to operate in either a heat-absorbing mode, where the thermoelectric unit absorbs heat from the thermal conductor so as to reduce temperature in the heat-conducting member, or a heat-radiating mode, where the thermoelectric unit radiates heat to the thermal conductor. A power source is connected to the temperature control device for supplying electric power thereto.
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