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Sabroe SAB high-pressure screw compressor units SAB 193 high-pressure screw compressor unit with UniSAB systems controller Variable-speed high-pressure screw compressor units with swept volumes of 1000–2,700 m3/hour These unique high-pressure compressor units are ideal for large, site-built ammonia heat pump installations that condense at either 90°C or 72°C They are also the ideal choice for larger CO2 systems or low-temperature two-stage freezer installations, such as carbon dioxide–ammonia (R744–R717) cascade refrigeration systems Using CO2 as refrigerant makes it possible to make big savings on installation, piping and compressor costs because a single compressor unit can replace multiple compressors using traditional refrigerants Sabroe SAB high-pressure screw compressors are specially designed for variable-speed operation and maximum flexibility, doing away with the traditional capacity limitations of slide-valve technology The capacity range of all SAB models extends from 1000 rpm to maximum rpm The SAB 193, 233 and 283 high-pressure configurations, all ductile iron-cased versions of the large Sabroe compressor units, provide substantial base load capacities along with providing exceptional flexibility in frequency converter operation This ensures the robustness and reliability derived from the thousands of compressors in long-term service in refrigeration plants worldwide Range Four models are available to provide swept volumes of between 1000 and 2,700 m3/h Features Benefits High-pressure units designed specifically for applications that use CO2 or ammonia as refrigerant Consistently high performance at both full and part load Load-based service schedules Makes it possible to undertake freezing and defrosting in a single stage, or to utilise waste heat Maximum part-load efficiency and low life cycle costs Optimised service/maintenance intervals, with a minimum of unscheduled downtime Stepless, skip-free capacity control ensures that output always matches requirements Lowest possible operating costs and rapid return on investment Space-saving small footprint, with fewer moving parts and very low vibration Exceptional reliability and low maintenance costs 30PDF Image | Sabroe Products 2022
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