Dynamic simulation of one-stage Oxford split-Stirling cryocooler and comparison with experiment

摘要

In this paper, a mathematical model of a one-stage Oxford split-Stirling cryocooler has been made to simulate its dynamic performance. A set of governing equations has been solved by a numerical method. The present paper emphasizes the validation of this model against experimental results for the Oxford split-Stirling cryocooler. The comparison shows acceptable agreement between the simulation and experimental results. The simulated results on compression work have relative discrepancies of 6.8 percent (cold-tip temperature 80 K) and 6.5 percent (cold-tip temperature 54 K) with their experimental results respectively. The greatest deviations for the minimum pressure and net cooling power are about 6.0 percent and 8.0 percent respectively.