Thesis presented January 10, 2002

Abstract:
A prototype providing 5.2 W at 80 Kelvin with 200 W of electrical input power have been designed and tested.
Pulse tube cooler designed without cold moving parts, have excellent reliability and low induced vibrations. This thesis work aimed at improving their design to obtain efficiencies allowing the industrialization of this technology. The capillaries, which allow a passive control of the relationship between flow and pressure oscillations, have been studied in detail and the limits of their use have been shown. The analysis of the resonance conditions of the oscillator allowed to evaluate the importance of its adequacy with the cold part to improve its electrical efficiency. During the sizing tests, the losses associated with the regenerator and the tube were estimated. These studies led to the design of a prototype allowing to extract a cold power of 5.2 Watt at 80 Kelvin with 200 Watt of electrical power. 

Keywords:
Cryogenics, cryocoolers

On-line thesis.