Abstract In a Stirling-cycle cryocooler model a foil-type regenerator is split into two parts. The foil spacing in one part is increased while decreased in the other. This gives rise to DC flow circulations between the two parts and degrades overall cryocooler performance. Within the regenerator the internal temperature distribution tends to be skewed toward one end or the other, depending on the local direction of the DC flow. These temperature changes amplify the DC flow and significantly degrade performance unless prevented by means of transverse thermal coupling between the two parts of the regenerator. The problem worsens with decreasing temperature and increasing foil spacing. In the temperature range of 30–100 K, it is easily possible for a foil regenerator to degrade overall cooling efficiency (heat lift / compressor PV power) by 15% or more for a foil spacing variation of only ±10% between different parts of the regenerator.
Flow Circulations in Foil-Type Regenerators Produced by Non-Uniform Layer Spacing
Cryocoolers 13 ; 421-430
2005-01-01
10 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Stage Regenerator , Regenerator Part , Flow Circulation , Thermal Dispersion , Regenerator Canister Physics , Extraterrestrial Physics, Space Sciences , Strongly Correlated Systems, Superconductivity , Optics, Optoelectronics, Plasmonics and Optical Devices , Imaging / Radiology , Automotive Engineering
Flow Circulations in Foil-Type Regenerators Produced by Non-Uniform Layer Spacing
British Library Conference Proceedings | 2005
|Metal Peeling for Production of Stainless Steel Foil for Gas Turbine Regenerators
SAE Technical Papers | 1973
|Stirling convertor regenerators
TIBKAT | 2012
|TIBKAT | 1995
|3-D Flow Model for Cryocooler Regenerators
British Library Conference Proceedings | 1997
|