The performance of a closed-cycle miniature Joule Thomson (J-T) cryocooler operating with zeotropic mixtures is presented in this work. The system can provide refrigeration between 90-100 K and meet a heat load of 1 to 3 W. A miniature variable-speed rotary piston compressor is used in the present version. A coiled tubes-in-tube heat exchanger with an effectiveness greater than 95% is used. The details of the system and its performance are presented in this paper.
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Murthy et al. (2024) studied this question.
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