Optimization of refrigerated shields using multilayer thermal insulatin: Cryostats design - analytical solution

• Type: Article in International Scientific Journal
• Date: 2006

Authors

augusto, pa (Author) Other; castelo-grande, t (Author) Other; Augusto, P (Author) Other; barbosa, d (Author) FEUP

Journal

Title: Cryogenics

Vol. 46

Pages: 449-457

ISSN: 0011-2275

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 5 Citations

Scopus - 8 Citations

Scientific classification

FOS: Engineering and technology > Mechanical engineering

Other information

Authenticus ID: P-004-KBV

DOI: 10.1016/j.cryogenics.2006.02.002

Abstract (EN): Although many cryostats have been designed with refrigerated shields covered by multilayer thermal insulation, the theory behind it has not yet been fully developed. In this paper, a thermodynamic analysis is made to minimize the power consumption of cryogenic systems containing refrigerated shields, considering all the design variables (temperatures, number of layers/cm present in the insulation and refrigeration efficiencies). In what concerns the temperature optimization, the theory of Eyssa and Okasha is extensively revised and improved, and analytical solutions are presented. We also analyze several typical cases concerning some optimization options.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9