Centrifugal compression stage performance with fluorocarbon refrigerants of different conditional isentropic exponents
DOI: 10.21047/1606-4313-2016-15-2-60-62
UDC 621.515
V.A. Korotkov, Tatarenko U.V., Panchenko A. V. , Markova K. M.
Abstract
The article investigates fluorocarbon centrifugal compression stage performance with gases of different isentropic exponents and high Mach number as a refrigerant. The mixture of krypton-xenon concentrate with isentropic exponents (ky ) of 1.62; 1.49; 1.39; 1.2 and 1.12 was analyzed. Gas-dynamic characteristics for the last stage of refrigeration centrifugal compressor with axial-radial impeller are considered. The influence of isentropic exponent on the performance of centrifugal compression stage is analyzed. нахарактеристикиступенихолодильногоцентробежногокомпрессора. When ky increases the output density of gas decreases. Therefore, at the same output flow angle we have lesser compressor capacity for higher ky, i.e.higher contact angle. The influence of ky on compression stage performance is shown to be different and to depend on the peculiarities of matching the compressor flow stage elements. The results obtained might be expended to be valid for all refrigerants of similar ky and new ozone-safe refrigerants.
Keywords: research, centrifugal compression stage, impeller, characteristics.
UDC 621.515
Centrifugal compression stage performance with fluorocarbon refrigerants of different conditional isentropic exponents
Abstract
The article investigates fluorocarbon centrifugal compression stage performance with gases of different isentropic exponents and high Mach number as a refrigerant. The mixture of krypton-xenon concentrate with isentropic exponents (ky ) of 1.62; 1.49; 1.39; 1.2 and 1.12 was analyzed. Gas-dynamic characteristics for the last stage of refrigeration centrifugal compressor with axial-radial impeller are considered. The influence of isentropic exponent on the performance of centrifugal compression stage is analyzed. нахарактеристикиступенихолодильногоцентробежногокомпрессора. When ky increases the output density of gas decreases. Therefore, at the same output flow angle we have lesser compressor capacity for higher ky, i.e.higher contact angle. The influence of ky on compression stage performance is shown to be different and to depend on the peculiarities of matching the compressor flow stage elements. The results obtained might be expended to be valid for all refrigerants of similar ky and new ozone-safe refrigerants.
Keywords: research, centrifugal compression stage, impeller, characteristics.
Русский
English
