Radiation and gas conduction heat transport across a helium dewar multilayer insulation system
This report describes a method for calculating mixed heat transfer through the multilayer insulation used to insulate a 4 K liquid helium cryostat. The method described here permits one to estimate the insulation potential for a multilayer insulation system from first principles. The heat transfer regimes included are: radiation, conduction by free molecule gas conduction, and conduction through continuum gas conduction. Heat transfer in the transition region between the two gas conduction regimes is also included.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 74104
- Report Number(s):
- LBL-36132; ON: DE95012324; TRN: 95:016280
- Resource Relation:
- Other Information: PBD: 10 Oct 1994
- Country of Publication:
- United States
- Language:
- English
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