| abstract |
Provided are a magnetic refrigeration device and a magnetic refrigeration method having a configuration for reducing heat loss during excitation / demagnetization of a magnetic field to a magnetic refrigeration material, and is small in size, simple, and highly efficient for the environment. Provide a refrigeration system. A double Halbach-type magnet having a double structure, which includes a ring-shaped inner Halbach-type magnet and an outer Halbach-type magnet and is arranged coaxially so that magnetic field spaces generated from these magnets overlap each other. A magnetic refrigeration material or a magnetic refrigeration work chamber containing the magnetic refrigeration material is disposed in an internal space, the outer Halbach magnet is rotationally driven with the inner Halbach magnet fixed, and a magnetic field is applied to the magnetic refrigeration material. By applying and removing the magnetic refrigeration material, a magnetocaloric effect is produced in the magnetic refrigeration material, and heat transport is performed. [Selection] Figure 4 |