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An Approach to Improve on Stiffness for Aerostatics Bearing
The Pocketed orifice structure for the air-nozzles of an aerostatic bearing is usually a particular pocketed orifice. This structure can not help the shaft to reach high stiffness in working process, so the applicability of the aerostatic bearing in machines with large centrifugal or horizontal foree is not focused.
7 p hcmute 07/06/2019 438 2
Từ khóa: Pocketed orifice, aerostatic bearing, stiffness, eccentricity, air pressure
Experimental study on the pressure and the power input of a CO air conditioning system
The environmentally friendly refrigerants and high effectiveness heat exchangers are interesting topics for scientists. For natural refrigerants, the carbon dioxide (R744-CO ) is considered as a good candidate in order to replace HCFC (Hydrochlofluorocarbon) or HFC (Hydrofluorocarbon). Besides, the compact heat exchangers with high heat transfer efficiency would be used widely in the future
12 p hcmute 23/05/2019 375 2
Từ khóa: Air conditioning, CO2 refrigerant, pressure, power input, evaporator, heat transfer
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