Development of a Stirling cycle based cryocooler

Abstract

With a view to maximize efficiency by reducing power consumption, a quasi halbach magnetized armature in a slotted stator forming a linear motor, has been used to drive a Stirling cycle based cryocooler. The developed cryocooler has been analyzed so as to find out the undamped natural frequency of the system. An experimental as well as a numerical approach has been taken to find out the stiffness contributed by the flexure bearings used herein. An analytical approach has been taken to calculate the variation of the gas spring stiffness offered by the working fluid during the cycle. Thus, the undamped natural frequency of the system has been found. The performance of the developed cryocooler has been found and an analysis has been performed using Schmidt’s proposed analysis.