| 摘要 |
PROBLEM TO BE SOLVED: To provide a cold storage material capable of improving efficiency of heat exchange, and a cold storage type refrigerator comprising the cold storage material.SOLUTION: The cold storage material has a laminated structure in which a first stage cold storage material 30 and a second stage cold storage material 60 are used for a GM refrigerator 1. In each layer of the cold storage material, a plurality of holes are formed through which gas can be passed in a direction of lamination. At least one layer includes a base material and a coating layer that covers the base material. Volumetric specific heat of the coating layer in a temperature range from 20 Kelvin to 40 Kelvin is greater than that of the base material. |
