مقاله Development of a −186 °C cryogenic preservation chamber based on a dual mixed-gases Joule

خلاصه مقاله

First of all, a dual mixed-gases Joule–Thomson refrigeration system was designed, constructed and tested in this work. A minimum no-load temperature of −197.7 °C (about 75.5 K) was reached and about 110 W cooling capacities at −174 °C (about 99 K) was obtained with the mixed-gases refrigeration prototype. Secondly, a cryogenic chamber for biomaterials preservation was built and tested with the similar cycle configuration, which has reached the lowest temperature of −192 °C (about 81 K) with an effective preservation volume of 80 L. A relatively fast cooling-down rate for this cryogenic chamber was obtained. Specifically, it took 2.5 h to reach −180 °C, and about 5 h to reach −190 °C. The cryogenic chamber shows a good perspective as a substitute for traditionally used liquid nitrogen preservation vessels.

نویسندگان

Maoqiong Gong [ Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China ]

Jianfeng Wu [ Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China ]

Quiwei Cheng [ Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China ]

Zhaohu Sun [ Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China ]

Jiayong Liu [ Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China ]

کلمات کلیدی

Mixed gases Joule–Thomson refrigeration Dual mixed gases cycle Cryogenic preservation chamber Prototype development

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مشاهده مقالات

Applied Thermal Engineering

The journal features aspects of the thermal engineering of advanced processes, including process integration, intensification and development, together with the application of thermal equipment in process plants. The optimisation of processes to maximise performance is also included.

حوزه های تحت پوشش : Applied Thermal Engineering