Share

A simplified generic cryostat thermal model for predicting cryogen mass and lifetime.

Author(s) : BIRUR G. C., TSUYUKI G. T.

Type of article: Article

Summary

The model is based on a lumped parameter representation of eight nodes and over 35 conductors. The major telescope dewar components are represented as nodes. The outer shell and superfluid helium temperatures are assumed to be known. The predictions from the model were compared with those from the more detailed models of infrared astronomical satellite (IRAS), cosmic background explorer (COBE) and space infrared telescope facility (SIRTF). Correlation of the helium flow rates of the IRAS and COBE dewars was 12% above the actual flight or ground test data and for SIRTF it was less than 2% of the prediction from the detailed model. Currently, this model is being used for the conceptual design studies of the submillimetre imager and line survey telescope.

Details

  • Original title: A simplified generic cryostat thermal model for predicting cryogen mass and lifetime.
  • Record ID : 1993-1822
  • Languages: English
  • Source: Cryogenics - vol. 32 - n. 2
  • Publication date: 1992

Links


See other articles in this issue (27)
See the source

Indexing