ABSTRACT
A cryorefrigerator is a device which is used to produce very low temperature by compressing and expanding a gas. As a pulse-tube refrigerator has no moving parts in its cold section, it has the potential to achieve lower vibration and higher reliability than other cryorefrigerators. The performance of a pulse-tube refrigerator is mainly dependent on its configuration and pulse rate. In addition, the performance also depends on the regenerative material, size and pressure drop through the regenerator. The main objectives of this research were to obtain the no-load characteristic of a pulse-tube refrigerator with different regenerative materials such as stainless steel and phosphor bronze, and also with different wire mesh sizes for basic pulse-tube refrigerators, orifice pulse-tube refrigerators and double-inlet pulse-tube refrigerators. It was observed that a 150 mesh stainless steel regenerative wire mesh resulted in a lower temperature than a 150 mesh phosphor bronze one.
