Cooling Performance of a Prototype Miniature Pulse Tube Refrigerator with a Flexure Spring Compressor
A miniature pulse tube refrigerator, split-type with a flexure spring compressor, was fabricated and tested. The miniature pulse tube was 5 mm diameter and 60 mm long. A stack of stainless steel mesh of #300 was used as a regenerator. Cooling performance of different pulse-tube refrigerator schemes, such as orifice, double inlet and modified, was studied. By using the compressor back-side volume as a reservoir and phase shifter, initial test demonstrated a cooling power of 0.16 W at 195 K for an input power of 6 W. A compressor was operated at a frequency of 50 Hz. The values of COP and FOM(% of Carnot) of the refrigerator were 2.42% and 1.20%, respectively.
KeywordsStainless Steel Mesh Cooling Power Pulse Tube Cold Head Pulse Tube Refrigerator
Unable to display preview. Download preview PDF.
- 3.Chan, C.K., Jaco, C.B., Raab, J., Tward, E. and Waterman, M., “Miniature pulse tube cooler”. Proceedings of the 7th International Crvocooler Conference, PL-CP—93-1001, Phillips Laboratory.Google Scholar
- 5.Haruyama, T. and Inoue, H., “Design and fabrication of a prototype Stirling Cryocooler for space borne applications”, to be published in Adv Cryog Eng, 39, (1994).Google Scholar