1Mechanical Engineering Department, Government Polytechnic, Valsad
2Mechanical Engineering Department, C. K. Pithawala College of Engg. & Tech., Surat
3Mechanical Engineering Department, S. V. National Institute of Technology, Surat
Cryogenic engineering is concerned with design and development of low temperature systems and components because low temperature is the governing parameter in any cryogenic application. Inertance pulse tube cryocooler provides superior performance than orifice pulse tube cryocooler due to its simplicity, less cost and directional characteristics.
Major of the work for inertance pulse tube cryocooler is recorded for high frequency stirling cryocoolers. Ample amount of research has not been carried out for low frequency GM type pulse tube cryocooler. An experimental setup has been modified and developed for experimental investigations on G-M type inertance pulse tube cryocooler. The necessary instrumentation for measurement ofcold end temperature and recording of pressure waveform is provided.
Experiments were carried out to investigate the effect of average pressure, frequency, diameter and length of inertance tube, on the performance of inertance pulse tube cryocooler. The performance of inertance pulse tube crycooler was evaluated for the frequency range of 3 Hz to 8 Hz. The lowest no-load temperature was recorded as 66.8 K at 6 Hz operating frequency and 20 bar average pressure. The optimum inertance tube diameter was found 1.5 mm and length 2.75 m.
Pulse tube, Inertance tube, Regenerator
