Overview
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ABSTRACT
Among compression refrigeration cycles, multistage cycles and in particular two-stage cycles are used in various domains: freezing in general, the chemical industry and lyophilization. After providing general information on these cycles, this article focuses on two-stage cycles and in particular partial injection cycles, total injection cycles and economizer cycles. The choice of the intermediate pressure is essential as it impacts the energetic consumption of the two stages. The production of very low temperatures, CO2 cascade cycles associated with other fluids and the various cycles using zeotropic blends are presented.
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Read the articleAUTHORS
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Maxime DUMINIL: Former professor at the French Institute of Industrial Refrigeration and Climatic Engineering (CNAM) - Former professor at École Centrale de Paris - Honorary expert to the Paris Court of Appeal
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Jean-Pierre DOMBLIDES: Senior lecturer at the Conservatoire National des Arts et Métiers and IFFI - French Institute for Industrial Refrigeration and HVAC - Chairman of the Training Committee of the French Refrigeration Association (AFF)
INTRODUCTION
A good knowledge of compression refrigeration cycles is of major importance, which justifies the development reserved for them.
After giving a general overview of refrigeration systems in the
This dossier [BE 9 732] is devoted to multi-stage compression refrigeration cycles and, in particular, two-stage machines found in fields as varied as general freezing, the chemical industry and freeze-drying. A study of cascade refrigeration cycles completes the text.
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KEYWORDS
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Refprop http://www.nist.gov/srd/nist23.cfm
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Annexes to the order of November 19, 2009 published in the Journal officiel no. 298 of December 24, 2009 and in the Bulletin officiel no. 2009-24 in the list of texts published in the Journal officiel NOR: DEVP0927337A (text not published in the Journal officiel).
Décret n° 2011-544 du 18 mai 2011 relatif aux attestations de prise en compte de la réglementation thermique et de réalisation d'une étude...
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