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Development of a novel cooling system with multiple pulse-tubes.

Author(s) : MIZUNO K., IKEDA K., NAGASHIMA K., et al.

Type of article: Article

Summary

Pulse-tube refrigerators are suitable for cooling systems of onboard high-temperature superconducting (HTS) magnets. This is because pulse-tube refrigerators have no moving parts in the cryogenic area and their maintenance cycle is longer than that of other cryocoolers. A novel pulse-tube cooling system that consists of a single compressor and multiple pulse-tubes has been investigated. This system allows uniform cooling of large HTS magnets and minimizes maintenance costs for the compressor. In addition, the refrigeration cycle timing of each pulse-tube can be controlled individually. The authors examined the same phase and reverse phase operations. The COP of the reverse phase operation was 50% higher than that of same phase operation. Numerical simulations indicated a similar result. In the case of the reverse phase operation, the compressor load was flat, and total energy consumption was reduced. These results show that higher performance was achieved for the reverse phase operation.

Details

  • Original title: Development of a novel cooling system with multiple pulse-tubes.
  • Record ID : 30003387
  • Languages: Japanese
  • Source: Journal of the Cryogenic Society of Japan - vol. 46 - n. 10
  • Publication date: 2011

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