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CopelandTM semi-hermetic compressor with compressor electronics technology for R744- subcritical applications requiring high standstill pressures (90 bar) Stream series of 4 cylinder CO2 compressors is the ideal solution for R744 low temperature cascade and booster systems requiring high standstill pressure of up to 90 bar Suction. The use of transcritical compressors in medium / transcritical side as well as on the low temperature / subcritical side ensures that in case of power outage, the refrigeration system features full resilience and no operation disruption. Stream is characterized by a design pressure of 135 bar. Refrigerant flow and heat transfer have been optimized for best performance. All compressors are equipped with Copeland compressor electronics technology and offer the possibility to diagnose system-related problems faster or even before they occur. Stream compressor range Copeland Stream Compressors for R744 R744 Cooling capacity (kw) 0 5 10 15 20 Conditions: EN12900 R744: Evaporating -35C, Condensing -5C, Superheat 10K, Subcooling OK Features and benefits Stream provides for flexibility in pack design and operation: • Compressor max. pressures (suction/discharge): 90 bar / 135 bar • Compact dimensions • Integrated low pressure relief valve • Discharge Temperature Protection • Service valve 360° rotation for ease of piping design • 2 sight glasses for mounting of oil management control and visual inspection • One oil port for oil equalization in parallel system • Oil splasher system ensuring lubrication at constant and variable speed Designed for durability and performance in R744 applications: • Low sound, low vibration and large discharge chamber to eliminate pulsation • Optimized motor selection for low temperature running conditions • Burst pressures in excess of safety factor 3 • Cylinder head and discharge plenum design minimizing heat transfer to suction side • Stepless capacity modulation via inverter from 25 to 70Hz • Copeland compressor electronics technology for advanced protection, diagnostics, communication • Individual compressor power consumption monitoring Operating envelope R744 30 20 10 0 -10 -20 -30 18 -55 -50 10K superheat -30 -25 -20 -15 -10 -45 -40 -35 Evaporating temperature °C 0°C Suction gas return Condensing temperature °CPDF Image | CO2 Product Guide 2021
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