| 摘要 |
PROBLEM TO BE SOLVED: To obtain a heat/cold storage tank which can be used in a wide range of temperature, has high thermal performance, reliability and durability, and is produced at a low cost, in order to build an energy storage type gas-turbine generating system. SOLUTION: A cold storage tank is constructed such that fluid channels 15 are formed through a solid cold storage material 16 and an external wall 14 covers side surfaces of the solid cold storage material 16 for maintaining the strength of the same. In the same manner, a cylindrical solid cold storage material 20 is arranged in each fluid channel 15. Further, the cold storage tank is divided into at least two cold storage tank units along the direction of the fluid channels, and heat insulators 23 are arranged between composition planes of the respective units 24, to thereby thermally separate the units.
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