Design of a Miniature Pulse Tube Refrigerator
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Using a miniature pulse tube refrigerator and a RICOR compressor of 1cc swept volume, we have achieved a lowest temperature of 80 K at which the cooling power is 1W.
The main purpose of this paper is to explain the rules used to design each component of a miniature PTR: regenerator, tube, reservoir, heat exchangers, and valves. The regenerator will be investigated in the following two ways: Firstly, a complete hydrodynamic study (based on mass and momentum conservation). Secondly, a thermal study of the system based on energy conservation in the gas and the matrix. These allowed the computation of the gas temperature profile in the regenerator and in the tube. The losses of the system were deduced.
KeywordsHeat Exchanger Mass Flow Rate Pressure Amplitude Dead Volume Pulse Tube
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