International Journal of Engineering and Technology

A numerical model based on adiabatic flow behaviour has been developed for predicting performance of a single stage Pulse Tube Refrigerator (PTR). The pressure oscillations of compressor, PTand reservoir have been derived with assumption that compressor volume varies sinusoidally. The relationships of mass rates (cold and hot ends, orifice and Double Inlet (DI) valves) are studied for the PTR system. Refrigeration powers are arrived at by considering the effect of void volumes and phase changes between PT pressure and flow of mass at cold zone. Cooling powers predicted by the model have been compared with experimental data of a single stagePTR developed in our laboratory. Analysis shows that theoretical predictions are in reasonable agreement with experimental data