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Note: Improved wire-wound heater.

Ricardo G Steinmann1, Hugo Vitoux1

  • 1European Synchrotron Radiation Facility, Sample Environment Service, 71, avenue des Martyrs, 38043 Grenoble, France.

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Summary
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Researchers measured heat transfer limits in wire-wound heaters at cryogenic temperatures. They found an upper limit of 15 W/cm², influenced by wire diameter, and explored methods to enhance heat transfer for cryostats.

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Area of Science:

  • Cryogenics
  • Heat Transfer Engineering
  • Materials Science

Background:

  • Wire-wound heaters are critical components in cryogenic applications.
  • Understanding heat transfer limitations is essential for optimizing performance.
  • Existing heater designs may not meet the demands of advanced cryostats.

Purpose of the Study:

  • To determine the upper limit of heat transfer for wire-wound heaters at cryogenic temperatures.
  • To investigate the influence of wire diameter on heat transfer.
  • To present novel methods for enhancing heat transfer in these devices.

Main Methods:

  • Experimental measurement of heat transfer in various wire-wound heater configurations.
  • Testing conducted at cryogenic temperatures.
  • Analysis of heat transfer data in relation to heater geometry.

Main Results:

  • An upper limit of approximately 15 W/cm² for heat transfer was identified.
  • Heat transfer capability was found to be dependent on the wire diameter.
  • Three distinct methods for increasing heat transfer were developed.

Conclusions:

  • The study establishes a benchmark for cryogenic wire-wound heater performance.
  • Wire diameter is a key parameter for maximizing heat transfer.
  • The proposed methods offer potential for improved thermal management in continuous flow cryostats.