Validation of the Pulse Tube Refrigerator Model against a Lockheed pulse tube cooler
โ Scribed by S.W.K. Yuan
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 616 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0011-2275
No coin nor oath required. For personal study only.
โฆ Synopsis
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 validated by two different pulse tube coolers. The results for the validation of a large laboratory pulse tube refrigerator built by the National Institute of Standards and Technology will be reported elsewhere. In this paper, the predicted performance of a pulse tube cooler developed by Lockheed in 1987-88 is compared with the experimental data. Good agreement was found between the two.
๐ SIMILAR VOLUMES
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
An improved numerical modelling technique for predicting the detailed performance and characteristics of an orifice pulse tube refrigerator has been developed. A variety of physical factors, such as gas flow friction, heat transfer in the heat exchanger and regenerator, real material properties etc.
A two-stage pulse tube refrigerator in combination with a rotary valve and a valved compressor has been constructed. Its performance and the effects of the operating parameters were investigated. A minimum temperature of 11.5 K and a cooling capacity of 1.3 W at 20 K were obtained at a frequency of
This paper presents the test results of the internal process of a double inlet pulse tube refrigerator, the main objective is to reveal the effects of some important parameters , such as by-pass valve and orifice opening, operating frequency and mean pressure, on the amplitude shift and phase shift