Experimental of cascade refrigeration system using natural refrigerant mixture ethane and carbon dioxide at low temperature circuit and natural refrigerant propane at high temperature circuit

Nasruddin, M. Idrus Alhamid, Darwin R B Syaka, Arnas Arnas

研究成果: Conference contribution

抜粋

Medicine and biomedical research activities require cold storage to store biomedical specimens such as, for example, stem cell, sperm, blood and other organs. During storage, to prevent the specimen from damage required a special cold storage reaches -80°C [1]. Using single cycle refrigeration machine can only reach -40°C, and performance deteriorates below -35°C drop in pressure associated with evaporation. Thus, to reach lower temperatures, use cascade refrigeration machine [2]. During this low-temperature circuit cascade refrigeration systems still use refrigerants that contain ozone-depleting or global warming (CFCs and HCFCs). To overcome this, a mixture of carbon dioxide and ethane azeotropic a promising alternative refrigerants. Simulation studies and experiments indicate a mixture of carbon dioxide and ethane were able to achieve the minimum temperature to -80°C [4-7]. With the mass ratio 70% R170 and 30% R744 circuit at low temperature refrigeration systems and uses a capillary tube expansion device 0.054 inch diameter with a length of 6 meters and 3 meters then use an electric heater as the cooling load. Cooling load is given by the variation of 90 W, 120 W and 150 W at a cabin in the low temperature circuit. From the experiment will be known characteristics of cascade refrigeration system with refrigerant mixture and will get the parameter data to make cascade refrigeration machine.

元の言語English
ホスト出版物のタイトルAdvances in Thermofluids
ページ96-100
ページ数5
DOI
出版物ステータスPublished - 2013 10 4
外部発表Yes
イベント5th International Meeting on Advances of Thermofluids, IMAT 2012 - Bintan Island, Indonesia
継続期間: 2012 11 122012 11 13

出版物シリーズ

名前Applied Mechanics and Materials
388
ISSN(印刷物)1660-9336
ISSN(電子版)1662-7482

Other

Other5th International Meeting on Advances of Thermofluids, IMAT 2012
Indonesia
Bintan Island
期間12/11/1212/11/13

ASJC Scopus subject areas

  • Engineering(all)

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