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Design and performance analysis of nitrogen condensation heat exchanger utilizing a 150 W-class cryocooler for biostorage process.

Number: 0066

Author(s) : KIM Y., LEE C., PARK I., CHA D. A., LEE J. G.

Summary

This study presents the design and analysis of a heat exchanger for condensing liquid nitrogen using a 150 W-class GM cryocooler operating at 77 K. The heat exchanger is designed to achieve a condensation rate of up to 30 L/day of liquid nitrogen, targeting applications that require stable cryogenic environments. Key design parameters, including the choice of material, structural configuration, and fin geometry of the heat exchanger, are investigated to optimize thermal efficiency and nitrogen condensation rates. In conjunction with the heat exchanger, we designed a cryogenic Dewar storage unit to store the condensed liquid nitrogen, maintaining an evaporation rate below 0.2 % per day. This low evaporation rate enhances system efficiency by reducing the load on the cryocooler. Based on the design results, we derived the optimal on/off operational conditions for the cryocooler and finalized the Dewar design to support implementation in cryogenic refrigeration systems, particularly for biostorage applications.

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Pages: 6 p.

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Details

  • Original title: Design and performance analysis of nitrogen condensation heat exchanger utilizing a 150 W-class cryocooler for biostorage process.
  • Record ID : 30033899
  • Languages: English
  • Subject: Technology
  • Source: Cryogenics 2025. Proceedings of the 18th IIR International Conference on Cryogenics, Prague, Czech Republic, 7-11 April 2025.
  • Publication date: 2025/04/07
  • DOI: http://dx.doi.org/10.18462/iir.cryo.2025.0066

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