Theoretical Performance of Single Stage and Two Stage Superfluid Stirling Refrigerators Using Kapton Recuperators
Previous superfluid Stirling refrigerators (SSR) using CuNi recuperators have experimentally achieved temperatures of 0.168 K and 0.296 K operating from high temperatures of 0.383 K and 1.05 K respectively. This article describes the theoretical performance of a single stage SSR and a two stage SSR which use Kapton recuperators. Specifically, a single stage SSR operating from a high temperature of 1.0 K should achieve a low temperature of 0.22 K and deliver 420 µW of cooling power at 0.3 K. A two stage SSR operating from a high temperature of 1.0 K should reach a low temperature of 0.12 K and deliver 750 µW of cooling power at 0.30 K.
KeywordsHeat Transfer Coefficient Heat Exchanger Cooling Power Cryogenic Engineer Stirling Cycle
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