MAGNETIC HEAT PUMP SYSTEM
First Claim
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1. A magnetic heat pump system comprising:
- a magnetic heat pump device;
a heat radiating device for radiating heat of heat transport medium, which is discharged from one end of the magnetic heat pump device, to an outside of the heat radiating device; and
a heat absorbing device for absorbing heat from an outside of the heat absorbing device into the heat transport medium discharged from the other end of the magnetic heat pump device,wherein the magnetic heat pump device comprises;
a container in which magnetocaloric effect material is accommodated and through which the heat transport medium passes;
a magnetic field changing unit for changing degree of magnetic field to be applied to the magnetocaloric effect material;
a working fluid moving unit for moving the heat transport medium in a reciprocating manner in the container, so that the heat transport medium is sucked into the container through one end of the container and the heat transport medium is discharged from the container through the other end of the container and vice versa;
wherein one of the following first and second materials is mixed in the heat transport medium;
first material having a coefficient of thermal conductivity, which is higher than that of the heat transport medium, andsecond material having a specific heat or a volume specific heat, which is higher than that of the heat transport medium.
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Abstract
In a magnetic heat pump system, in which heat transport medium is heated or cooled by magnetocaloric effect material accommodated in a magnetic heat pump device. A material having a coefficient of thermal conductivity, which is higher than that of the heat transport medium, or a material having a specific heat or a volume specific heat, which is higher than that of the heat transport medium, is mixed in the heat transport medium. A coefficient of thermal conductivity of the heat transport medium is thereby increased so as to increase heating and/or cooling performance of the magnetic heat pump system.
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Citations
16 Claims
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1. A magnetic heat pump system comprising:
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a magnetic heat pump device; a heat radiating device for radiating heat of heat transport medium, which is discharged from one end of the magnetic heat pump device, to an outside of the heat radiating device; and a heat absorbing device for absorbing heat from an outside of the heat absorbing device into the heat transport medium discharged from the other end of the magnetic heat pump device, wherein the magnetic heat pump device comprises; a container in which magnetocaloric effect material is accommodated and through which the heat transport medium passes; a magnetic field changing unit for changing degree of magnetic field to be applied to the magnetocaloric effect material; a working fluid moving unit for moving the heat transport medium in a reciprocating manner in the container, so that the heat transport medium is sucked into the container through one end of the container and the heat transport medium is discharged from the container through the other end of the container and vice versa; wherein one of the following first and second materials is mixed in the heat transport medium; first material having a coefficient of thermal conductivity, which is higher than that of the heat transport medium, and second material having a specific heat or a volume specific heat, which is higher than that of the heat transport medium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An air conditioning apparatus comprising:
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a magnetic heat pump device having a first and a second container units in which magnetocaloric effect material are accommodated and through which heat transport medium passes, magnetic field changing units provided in each of the first and second container units for changing degree of magnetic field to be applied to the magnetocaloric effect material, and a working fluid moving unit provided between the first and second container units for moving the heat transport medium in a reciprocating manner in the respective first and second container units, so that the heat transport medium is sucked into and/or discharged from the respective container units; a heat absorbing device for absorbing heat from an outside of the heat absorbing device into the heat transport medium discharged from the first container unit; a heat radiating device for radiating heat of the heat transport medium, which is discharged from the second container unit, to an outside of the heat radiating device; a first circulation pipe connected to the first container unit, wherein the heat absorbing device is provided in the first circulation pipe; and a second circulation pipe connected to the second container unit, wherein the heat radiating device is provided in the second circulation pipe, wherein the magnetic field changing unit, which is provided in each of the first and second container units, is composed of a rotor attached to a rotational shaft and permanent magnets attached to an outer periphery of the rotor, wherein the magnetic field changing unit provided in the first container unit removes the magnetic field generated by the permanent magnets and to be applied to the magnetocaloric effect material, when the heat transport medium is discharged from the first container unit into the first circulation pipe, and wherein the magnetic field changing unit provided in the second container unit applies the magnetic field generated by the permanent magnets to the magnetocaloric effect material, when the heat transport medium is discharged from the second container unit into the second circulation pipe. - View Dependent Claims (15, 16)
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Specification