๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Dynamic experimental investigation of a multi-bypass pulse tube refrigerator

โœ Scribed by Y.L. Ju; C. Wang; Y. Zhou


Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
570 KB
Volume
37
Category
Article
ISSN
0011-2275

No coin nor oath required. For personal study only.

โœฆ Synopsis


We designed and constructed a dynamic experimental apparatus to measure the instantaneous velocity and pressure in the multi-bypass pulse tube refrigerator (MPTR). Some experimental results of the instantaneous measurements of velocity and pressure in an MPTR with two-bypass tubes during actual operation are presented. D.c. flow phenomena are observed in this MPTR. Reasons are given for the multibypass version improving the performance of the pulse tube refrigerator. @) 1997 Elsevier Science Ltd.


๐Ÿ“œ SIMILAR VOLUMES


Experimental investigation of 4 K pulse
โœ J.L Gao; Y Matsubara ๐Ÿ“‚ Article ๐Ÿ“… 1994 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 534 KB

To investigate how to reach 4 K using a pulse tube and the best multiple staging configuration for the pulse tube, experiments were performed on several types of singlestage pulse tube refrigerators coupled with a Gifford-McMahon cryocooler. The minimum temperature obtained at the cold end of the pu

The experimental investigation of a two-
โœ C. Wang; Y.L. Ju; Y. Zhou ๐Ÿ“‚ Article ๐Ÿ“… 1996 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 442 KB

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

Experimental research of a miniature coa
โœ M. Xu; Y. He; P. Wu; Z. Chen ๐Ÿ“‚ Article ๐Ÿ“… 1996 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 215 KB

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

Theoretical and experimental studies of
โœ C. Wang; P.Y. Wu; Z.Q. Chen ๐Ÿ“‚ Article ๐Ÿ“… 1993 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 545 KB

A mechanical support system is described for a space-borne 3He refrigerator that relies on Kevlar 29 braided cords to achieve thermal isolation at temperatures ranging from 0.3 to 40 K. Measurements of the Young's modulus, tensile strength, creep and thermal conductivity of Kevlar cords at room and

Experimental results of the internal pro
โœ Bin Zhou; Peiyi Wu; Shilian Hu; Guobang Chen ๐Ÿ“‚ Article ๐Ÿ“… 1992 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 209 KB

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