Abstract
A numerical model of a double-inlet pulse tube refrigerator (DPT) has been developed and the equations of continuity, momentum and energy (for both gas and solid) are solved numerically. The mass flow through the bypass valve depends on the pressure difference between either side of it. The results of numerical analysis reveal the internal process occurring in the DPT. Predictions show that the DPT can obtain higher refrigeration power with lower P — V work than does the conventional orifice version; the bypass valve in the DPT has a significant effect on the phase and amplitude of the dynamic parameters.
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