F - Mech Eng,Light,Heat,Weapons – 25 – B
Patent
F - Mech Eng,Light,Heat,Weapons
25
B
F25B 49/02 (2006.01)
Patent
CA 2727205
A method of calculating net sensible cooling capacity of a cooling unit (10) includes measuring a discharge pres-sure from of fluid from a compressor (30) and a suction pressure from an evaporator (44), calculating a condensing temperature of fluid flowing from the compressor and an evaporating temperature of fluid flowing from the evaporator, calculating a mass flow rate of fluid flowing from the compressor, calculating enthalpy of fluid flowing from the compressor, of fluid flowing from the thermal expansion valve (48), and of fluid flowing from the evaporator, calculating a mass flow rate of fluid flowing through the hot gas bypass valve (64), and calculating net sensible cooling capacity. Embodiments of cooling units and other methods are fur-ther disclosed.
Linvention concerne un procédé de calcul de la puissance frigorifique sensible nette dune unité de refroidissement (10), consistant à mesurer une pression de refoulement dun fluide provenant dun compresseur (30) et une pression daspiration provenant dun évaporateur (44) et à calculer une température de condensation du fluide sécoulant du compresseur et une température dévaporation du fluide sécoulant de lévaporateur. Le procédé consiste également à calculer un débit massique du fluide sécoulant du compresseur, à calculer lenthalpie du fluide sécoulant du compresseur, du fluide sécoulant de la soupape de dilatation thermique (48), et du fluide sécoulant de lévaporateur, à calculer un débit massique du fluide sécoulant à travers la soupape de dérivation des gaz chauds (64), et à calculer la puissance frigorifique sensible nette. Linvention concerne également des modes de réalisation dunités de refroidissement et dautres procédés.
Bean John H. Jr.
Tutunoglu Ozan
American Power Conversion Corporation
Riches Mckenzie & Herbert Llp
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