Real-time measurement and analysis of energy flow in Stirling-type pulse tube refrigerator

A stable instrument with the minimum void volume is developed for real-time measurement of physical conditions in Stirling-type pulse tube refrigerator. From the measured physical conditions, the energy flows are identified, so that we can precisely know the non-equilibrium energy conversion process in two Stirling-type pulse tube refrigerators. The results of this paper are the experimental results that are obtained from actual Stirling-type pulse tube refrigerator configurations. The proposed method can be useful for clarifying the energy conversion process and analyzing the tendency of physical conditions in cryogenic systems.