Study of Free Piston Vuilleumier Heat Pump : Performance Characteristics of Prototype Machine during Self-Excited Vibration

概要

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A prototype of a free piston Vuilleumier heat pump(FPVM)was designed and fabricated in order to study the basic FPVM performance characteristics during self-excited vibration. The FPVM has a cooling capacity of 3.2kW and a cooling COP of 0.6 during self-excited vibration. Dependence of the dynamic motion of the displacers and the FPVM performance on the mean gas pressure, hot gas temperature, and hot and cold water temperatures was investigated experimentally and analyzed using a simple 2nd order isothermal simulation method combined with linear analysis. The performance characteristics of the FPVM when a hot and a cold displacer were, and were not, connected by a spring were examined and discussed. There was no qualitative difference between the FPVM's. It was found that the simulation results agreed well qualitatively with the experimental results and that the simulation method was suitable for analyzing the FPVM performance characteristics and designing a practical machine.
一般社団法人日本機械学会の論文
1997-11-15