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Please Visit Our Sponsor  Gift Shop BAEs
Life Test Results on Various Linear Coolers and
Their Correlation with a First Order Life
Estimation Method D.T.
Kuo, T.D. Lody and S.W.K. Yuan BAE
Systems, Cryogenic Products Sylmar,
CA 91342 ABSTRACT
Life
test results of various models of BAE Stirling coolers are presented in
this paper together with a first order life approximation model.
A cryocooler life
estimation method based on the Watt-Hour approach has been developed elsewhere1. According
to this method, the total energy of a cryocooler (i.e., the product of
mean input power and total operating time) is conserved. From
actual life test data of input power rise as a function of time, the energy
of the cooler in Watt-Hour can be calculated by integrating the life test
curve. With this knowledge
and the specification, one can proceed to estimate life. The
biggest disadvantage of this method is that it requires prior knowledge
of the life test data before life estimation can be performed. In
the present paper, a first order approach is used to estimate the rise
in input power as a function of time, which can then be used in life estimation.
Do You Know Someone Who Needs A Job in Engineering, Physics or Chemistry? About the author- Dr. Sidney Yuan is a consultant in the field of Low Temperature Physics and Cryogenics, and has written a Book on Cryogenics and published extensively in the field. E-Mail. Bookmark This Page Send This Page To A Friend 
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