Studies on an improved indigenous pressure wave generator and its testing with a pulse tube cooler | Zendy

S. Jacob | Zendy; R. Karunanithi | Zendy; G. S. V. L. Narsimham | Zendy; J. Kumar Kranthi | Zendy; C. Damu | Zendy; T. Praveen | Zendy; M. Samir | Zendy; A. Mallappa | Zendy

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Studies on an improved indigenous pressure wave generator and its testing with a pulse tube cooler

Author(s) -

S. Jacob,

R. Karunanithi,

G. S. V. L. Narsimham,

J. Kumar Kranthi,

C. Damu,

T. Praveen,

M. Samir,

A. Mallappa

Publication year - 2014

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.4860727

Subject(s) - inertance , piston (optics) , tube (container) , cylinder , seal (emblem) , refrigeration , materials science , power (physics) , acoustics , overall pressure ratio , generator (circuit theory) , mechanical engineering , mechanics , engineering , physics , gas compressor , optics , thermodynamics , art , wavefront , visual arts

Earlier version of an indigenously developed Pressure Wave Generator (PWG) could not develop the necessary pressure ratio to satisfactorily operate a pulse tube cooler, largely due to high blow by losses in the piston cylinder seal gap and due to a few design deficiencies. Effect of different parameters like seal gap, piston diameter, piston stroke, moving mass and the piston back volume on the performance is studied analytically. Modifications were done to the PWG based on analysis and the performance is experimentally measured. A significant improvement in PWG performance is seen as a result of the modifications. The improved PWG is tested with the same pulse tube cooler but with different inertance tube configurations. A no load temperature of 130 K is achieved with an inertance tube configuration designed using Sage software. The delivered PV power is estimated to be 28.4 W which can produce a refrigeration of about 1 W at 80 K

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