Patent ID: 8826674
Filing Date: 2014-09-09
Classification: H01F

Abstract:
1. A cryostat for electrical power conditioner comprising: at least one external wall; at least one internal wall defining a volume to be cooled; a thermally insulating gap between the at least one external wall and the at least one internal wall, wherein at least one part of the at least one internal wall, and optionally at least one part of the at least one external wall, comprises a layered structure, which layered structure comprises: the continuous layer has a thickness (t) given by the equation: where t (in mm) is the thickness of the continuous layer, k is an experimental coefficient in the range from 0.8 to 2.5, P (in MPa) is a differential pressure between the pressure of an ambient medium acting on the external wall and the pressure of a cooled medium arranged within the internal wall, R (in mm) is a radius of curvature of the continuous layer between two adjacent formers, σ (in MPa) is a maximal tensile stress of the material of the continuous layer, and g=0.002 mm.