Thread Content
This post was last written by Xiao Yuan_YPIJ edited on 2020-3-26 08:45 The causes and avoidance methods of the surge phenomenon of York centrifugal chillers, maintenance of screw ammonia cascade refrigeration units, the causes and avoidance methods of the surge phenomenon of centrifugal chillers: There will be no surge at full load because the centrifugal blades can throw the gas out at high speed and turn it into high-temperature and high-pressure gas. If it is under low load, the inhaled gas is too little and is not enough to throw the rare gas out at the same speed, causing surge. The solution is screw + centrifugal full load! ! High condensation pressure will cause breathing problems. Even if the load is too small, you will still be out of breath. Mainly caused by the pressure ratio being too large. Reduce cooling water temperature. Installation of hot air bypass and variable frequency speed control surge concept: The gas at the outlet of the centrifugal compressor flows back from the condenser back to the impeller, and the high-temperature gas flows back and forth to create an impact phenomenon. Surge hazard: This causes periodic increases in noise and vibration, and the backflow of high-temperature gas also causes the temperature of the housing and bearings to rise. Damage to the compressor or even the entire refrigeration unit. Petrochemicals, polysilicon, chlor-alkali, PVC, coal chemicals, and fluorine chemicals are the main service objects of Kuai'anjia Industry. The world's mainstream brands: York, GEA Grasso, Maekawa, Kobelco, VILTER, Howden, etc., can provide a full range of technical services for refrigeration systems: overhaul of screw compressors and drive motors; system transformation, debugging and maintenance; formulation of the best preventive maintenance plan, etc. Causes and avoidance methods of surge phenomenon in York centrifugal chiller, maintenance of screw ammonia cascade refrigeration unit