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Joule-Thomson cryocooler

HTS SQUID System with Joule-Thomson Cryocooler for Eddy Current Nondestructive... [Pg.304]

This cycle also uses continuous counterflow heat exchanger and is closely related to the Joule-Thomson and Claude cycles as shown in Fig. 5.15(a) [60], The cryocooling or reverse Brayton cycle derives from a reciprocating gas engine patented by G. B. Brayton in... [Pg.142]

R.C. BowmanJr., B.D. Freeman, J.R. Phillips, Evaluation of metal hydride compressors for applications in Joule-Thomson cryocoolers, Cryogenics 32 (1992) 127-137. [Pg.194]

Figure 5. (a) Schematic of the Joule-Thomson cryocooler showing the use of an oil-free compressor and a high-effectiveness heat exchanger, (b) The Joule-Thomson cycle shown on a temperature-entropy diagram. Dashed lines indicate the heat exchange process in the heat exchanger. [Pg.97]

Figure 7. Joule-Thomson micro cryocooler. Courtesy APD Cryogenics. Figure 7. Joule-Thomson micro cryocooler. Courtesy APD Cryogenics.
A few other examples are examined here to illustrate the range of geometries that may exist in optimized heat exchangers for cryocoolers. These examples are for Joule-Thomson cryocoolers, which are easily miniaturized. Table 1 lists the operating conditions and important input parameters for all of... [Pg.109]

The need for high effectiveness heat exchangers in cryocoolers is indicated by the low values of q, which gives the maximum ineffectiveness allowed for the heat exchanger, at which point net refrigeration is eliminated. With pure gases in a Joule-Thomson (JT) cryocooler starting from... [Pg.111]

Figure 18. Photographs of a miniature heat exchanger developed for the precooling stage of a helium Joule-Thomson cryocooler. The construction used photoetched stainless steel foil diffusion bonded together [9],... Figure 18. Photographs of a miniature heat exchanger developed for the precooling stage of a helium Joule-Thomson cryocooler. The construction used photoetched stainless steel foil diffusion bonded together [9],...
Bowman, R.C., )r., Kiehl, B Mar-quardt, E. (2003) Closed-Cycle Joule-Thomson Cryocoolers, in Spacecraft Thermal Control Handbook, Volume II Cryogenics (ed. M. Donabedian),... [Pg.412]

Longsworth, R.C. (1993). Heat exchangers for Joule Thomson cryocoolers. In Aerospace Heat Exchanger Technology. Eds R.K. Shah and A. Hashemi. Elsevier, The Netherlands, 1993. [Pg.102]

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See also in sourсe #XX -- [ Pg.389 ]



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