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List of KIMM TechnologiesEnergy Systems Research Division

Cryogenic Cooling System Design Technology

Division Innovative Energy Machinery Research Division > Department of Thermal Energy Solutions
Name Dr. Sehwan In
Department Department of Energy Conversion Systems
Tel +82 - 42 - 868 - 7061
E-mail insh@kimm.re.kr
Attachment Download 055_Cryogenic_Cooling_System_Design_Technology.pdf (3.2 KB)

Engineering technology to design and construct a cooling system
using a cryocooler to create the cryogenic environment (below
-150℃) required by the cooling target

Cooling system divided into the cryogenic fluid cooling system using
cryogenic fluid (liquid nitrogen, liquid helium, etc.) and the cryogenic
conduction cooling system using a solid structure with good thermal
conductivity.

 

Client / Market

  • Superconducting applications (superconducting power device, superconducting
    magnet, NMR, MRI, etc.), gas liquefaction/re-liquefaction

 

Necessity of this Technology

  • Various cooling system combination depending on the requirements of the cooling
    target (temperature, pressure, cooling load, etc.)
  • Cooling system design to minimize the cooling load of a cryocooler while satisfying
    the requirements of the cooling target.
  • Suitable design margin for basic design of the cooling system and its components.

 

Technical Differentiation

  • Cooling system design based on design and test experience of various cryogenic
    cooling systems (superconducting power cable, superconducting fault current
    limiter, SMES, NMR, etc.)
    - Cryogenic cooling system configuration to meet the requirements of the cooling
    target
    - Determination of design margin for the system and its components
    - Calculation of cooling load and selection of a cryocooler according to the system
    design
    - System basic design (system/component specification)
    - Detailed design of a system cooling structure (conduction cooling system)

 

Excellence of Technology

  • Track record of cryogenic fluid cooling system design and test
    - Superconducting power cable cooling system (single-phase 154 kV, 1000 MVA, 100 m)
    Liquid nitrogen circulation cooling (70 K, 5 bar), Stirling cryocooler: 2kW @ 77 K
    - Superconducting fault current limiter cooling system (single phase 154 kV, 2 kA) Liquid
    nitrogen circulation cooling (71 K, 5 bar), Stirling cryocooler: 4 kW @ 77 K
  • Track record of cryogenic conduction cooling system design and test
    - SMES (Superconducting Magnetic Energy Storage)
    Energy storage : 600 kJ, operating temperature: 20 K, 2 stage GM cryocooler
    - NMR (Nuclear Magnetic Resonance)
    Superconducting magnet : 9.4 T, operating temperature: 20 K, 2 stage pulse tube cryocooler

 

CURRENT INTELLECTUAL PROPERTY RIGHT STATUS

PATENT
  • Pressurizing System for Cryogenic Pressure Vessel (KR1558840)
  • System and Method for Superconducting Fault Current Limiter Recovery (KR1558839)
  • Pressurization System using Floating Heater for Cryogenic Pressure Vessel (KR1569650)
  • System and Method for Superconducting Fault Current Limiter Recovery (KR1601593)
  • Recovery System for Superconducting Fault Current Limiter (KR1691983)
  • Recovery System for Superconducting Fault Current Limiter (KR1691989)
  • Recovery System for Superconducting Fault Current Limiter (KR1720752)
KNOW-HOW
  • Cryogenic cooling system design technology

 

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