An integration formula of enthalpy flow rate along a pulse tube in pulse tube refrigerators is described on the assumption of sinusoidal mass flow rate and sinusoidal pressure fluctuation. For ideal double inlet and ideal orifice pulse tube with helium as working medium, it is simplified to a polyno
Flow characteristics of a metering valve in a pulse tube refrigerator
β Scribed by Guoqiang Lu; Ping Cheng
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 301 KB
- Volume
- 40
- Category
- Article
- ISSN
- 0011-2275
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The use of a pulse tube cryocooler in an application requires temperature stability at the cold end. In our four-valve pulse tube refrigerator we have observed long-term temperature instabilities lasting some days and short-term instabilities lasting some hours or even minutes. Investigations have s
A third-order computer model has been developed by modifying the Stirling Refrigerator Performance Model (SRPM), which has been validated extensively by various Stirling refrigerators in the literature. The resulting computer program, known as the Pulse Tube Refrigerator Model (PTRM), has been valid
The pulse tube reported in this paper is 5 mm in inner diameter and 50 mm in length with an effective tube volume of about 0.4cm3. The coaxial design is used to minimize its dimensions and nylon tube is used to decrease heat transfer between the pulse tube and the surrounding regenerator. It was op