Compression system for cooling and heating purposes

F - Mech Eng,Light,Heat,Weapons – 25 – B

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F25B 9/00 (2006.01) F25B 13/00 (2006.01) F25B 40/00 (2006.01)

Patent

CA 2459276

A compression refrigeration system includes a compressor (1), a heat rejector (2), expansion means (3) and a heat absorber (4) connected in a closed circulation circuit that may operate with supercritical high-side pressure. The refrigerant charge and component design of the system corresponds to a stand still pressure inside the system which lower than 1.26 times the critical pressure of the refrigerant when the temperature of the whole system is equalised to 60 degrees C. Carbon dioxide or a mixture of a refrigerant containing carbon dioxide may be applied as the refrigerant in the system.

La présente invention se rapporte à un système de compression pour réfrigération qui comporte un compresseur (1), un dispositif de rejet de chaleur (2), un moyen de détente (3) et un dispositif d'absorption de la chaleur (4) connectés dans un circuit à circulation fermée qui peut fonctionner à une pression supercritique du côté haute pression. La charge de fluide frigorigène et la conception des composants du système correspondent à une pression d'immobilité à l'intérieur du système qui est inférieure à 1,26 fois la pression critique du fluide frigorigène lorsque la température de l'ensemble du système est égale à 60· C. Le fluide frigorigène utilisé dans le système peut être du dioxyde de carbone ou un mélange d'un fluide frigorigène contenant du dioxyde de carbone.

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