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Cyclic simulation of stirling cryogenerator with two-component two-phase fluid

DSpace at IIT Bombay

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Title Cyclic simulation of stirling cryogenerator with two-component two-phase fluid
 
Creator PATWARDHAN, KP
BAPAT, SL
 
Description A Stirling cycle cryogenerator operates on a closed regenerative thermodynamic cycle with compression and expansion of the working fluid occurring at different temperature levels. Generally, hydrogen or helium is used as a single-component working fluid in the cryogenerators used for liquefaction of nitrogen. The use of a two-component working fluid, one condensing at the required refrigerating temperature, can improve the performance of the cryogenerator. If maximum cycle pressure in the cryogenerator is kept the same as when using a single-component working fluid, the pressure varies over a larger range. This provides an increase in the available refrigerating effect, but at a correspondingly higher input power. Thus, a particular cryogenerator can provide a larger liquefaction capacity when working with a two-component two-phase working fluid. Alternately, for a fixed liquefaction capacity, the maximum cycle pressure can be kept lower than the maximum cycle pressure with a single-component working fluid. The change over to a two-component fluid does not involve any change in the cryogenerator configuration. In this paper a computer simulation using second order cyclic analysis has been carried out for a PLN-106 cryogenerator used for the liquefaction of nitrogen at a capacity of 6-6.5 dm(3) h(-1). The results using a single-component working fluid are compared with those for a two-component working fluid with the same maximum cycle pressure.
 
Publisher PLENUM PRESS DIV PLENUM PUBLISHING CORP
 
Date 2011-10-27T12:12:43Z
2011-12-15T09:12:14Z
2011-10-27T12:12:43Z
2011-12-15T09:12:14Z
1997
 
Type Proceedings Paper
 
Identifier CRYOCOOLERS 9,157-162
0-306-45511-0
http://dspace.library.iitb.ac.in/xmlui/handle/10054/16294
http://hdl.handle.net/100/2539
 
Source 9th International Cryocooler Conference,WATERVILLE VALLEY, NH,JUN 25-27, 1996
 
Language English