Abstract Cycle modeling of regenerative cryocoolers has received much attention in the literature over the past decade or so, due in part to the complexity of the gas flow. While having received less attention, recuperative cycle cryocoolers are somewhat easier to model in that the continuous gas flow allows one to avoid the time discretization required by oscillatory flows and look directly at the steady-state behavior. As the maturation of its technology nears, the tune is right to model various configurations of a turbo-Brayton cryocooler that may be applicable to programs such as the Next Generation Space Telescope (NGST) and Constellation-X. As the design parameters codify for these two programs, a flexible turbo-Brayton cryocooler model is required to evaluate the passive/active cooling trades and will certainly be needed in any follow-on design phase. Presented here is a component-based cycle model written in Mathematica. Separate functions, based on the first and second laws of thermodynamics, are used to model individual physical components. The functions are combined for a particular system configuration and solved simultaneously for the state points and mass flow rate. This approach allows for easy mixing and matching of components for various configurations, two of which are shown here.
A Flexible Turbo-Brayton Cryocooler Model
Cryocoolers 11 ; 499-504
2002-01-01
6 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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