A method for non-intermittent provision of fluid supercool...

F - Mech Eng,Light,Heat,Weapons – 17 – C

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F17C 5/02 (2006.01) F17C 9/00 (2006.01)

Patent

CA 2475067

The inventive process for the uninterrupted provision of liquid subcooled carbon dioxide at essentially constant pressure greater than 40 bar comprises the following process steps: liquid carbon dioxide is supplied at low pressure; the carbon dioxide is charged into a low-pressure tank (1) and is stored there temporarily; the carbon dioxide is pumped by means of a pump (4) from the low-pressure tank (1) into a high~pressure tank (2), the pressure of the carbon dioxide being increased; the carbon dioxide is stored or temporarily stored in the high-pressure tank (2) until removal in a thermodynamic disequilibrium between a liquid phase and a gas phase. The process and the supply system (3) suitable for carrying out the process are distinguished by their high performance and efficiency for the uninterrupted and inexpensive supply of liquid subcooled carbon dioxide at an essentially constant pressure greater than 40 bar.

Cette invention concerne un procédé d'alimentation ininterrompue de dioxyde de carbone sous-refroidi liquide à pression sensiblement constante supérieure à 40 bars, lequel procédé consiste : à utiliser du dioxyde de carbone liquide à basse pression ; à mettre le dioxyde de carbone dans un récipient basse pression (1) et à le stocker temporairement dans ce récipient ; à pomper le dioxyde de carbone au moyen d'une pompe (4) du récipient basse pression (1) à un récipient haute pression (2), la pression du dioxyde de carbone étant ainsi augmentée ; à stocker de façon permanente ou temporaire le dioxyde de carbone dans le récipient haute pression (2) jusqu'à la suppression d'un déséquilibre thermodynamique entre une phase liquide et une phase gazeuse. Le procédé et le système (3) d'alimentation permettant de mettre en oeuvre le procédé se distinguent par leurs excellentes performances et efficacité en matière d'alimentation ininterrompue et peu coûteuse de dioxyde de carbone sous-refroidi liquide à une pression sensiblement constante supérieure à 40 bars.

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