CENTRIFUGAL COMPRESSOR ASSEMBLY AND METHOD

A centrifugal compressor assembly (24) for compressing refrigerant in a 250-ton capacity or larger chiller system (20), the centrifugal compressor assembly comprising a mixed flow impeller (56, 58) and a vaneless diffuser (112) sized such that a final stage compressor (28) operates with an optimal s...

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Bibliographische Detailangaben
1. Verfasser:	HALEY, PAUL, F
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BLASTING COMBINED HEATING AND REFRIGERATION SYSTEMS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEAT PUMP SYSTEMS HEATING LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT PUMPS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS REFRIGERATION MACHINES, PLANTS OR SYSTEMS REFRIGERATION OR COOLING TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS WEAPONS
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Beschreibung
Zusammenfassung:	A centrifugal compressor assembly (24) for compressing refrigerant in a 250-ton capacity or larger chiller system (20), the centrifugal compressor assembly comprising a mixed flow impeller (56, 58) and a vaneless diffuser (112) sized such that a final stage compressor (28) operates with an optimal specific speed range for targeted combinations of head and capacity, while a non-final stage compressor (26) operates above the optimum specific speed of the final stage compressor. Compresseur centrifuge (24) destiné à comprimer un réfrigérant dans un refroidisseur d'une capacité de 250 tonnes ou plus (20), le compresseur centrifuge comprenant une turbine à flux mixte (56, 58) et un diffuseur sans aubes (112) conçu afin qu'un compresseur d'étage final (28) fonctionne selon une plage de vitesses spécifique optimale pour des combinaisons cibles de hauteur de charge et de capacité, tandis qu'un compresseur d'étage non final (26) fonctionne au-dessus de la vitesse spécifique optimale du compresseur d'étage final.