C04 オリフィス型パルスチューブ冷凍機の設計手法に関する考察 : 第 4 報冷凍機適用の可能性と冷凍性能の向上について

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  • Study on Design Methods of Orifice Type Pulse Tube Refrigerator : 4^<th> report : Discussion of the possibility as an application and the enhancement of cooling performance

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Since environmental problems are getting to be very serious in these days, we have to provide for the protection of the environment as soon as possible. Therefore, an interest is growing to apply a cryocooler to the non CFCs' and non HFCs' refrigeration system, which will be a candidate for alternatives of the traditional vapor compression refrigeration system. In particular, a helium gas is one of the promising refrigerants for its zero ODP and zero GWP characleristics. In this paper, an orifice type pulse tube refrigerator (OPTR) is manufactured and some experiments to understand the refrigeration performance have been made. The characteristic of the refrigerator's cooling performance is that there is a proportional relationship between the cooling temperature and the heat load. And the possibility of this refrigerator as an application in terms of cooling temperature is discussed and the guidelines of designing the system are shown.

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