Brochure ZH 350+
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Atlas Copeo Oil-free high-speed drive centrifugal compressor

Unimatchable energy efficiency and reliability Atlas Copco's ZH 350+ oil-free centrifugal compressor is designed to save energy. The unique combination of optimal 3-stage compression, titanium impellers, the high-speed, high-efficiency motor, magnetic bearings and low pressure drops reduce energy consumption to previously unattainable low levels. This innovative compressor provides reliable operation in the most demanding environments. For optimum product quality, air is 100% certified oil-free according to ISO 8573-1 CLASS 0 (2010). A continuous flow of high-quality air The demands placed...

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Driving down energy costs Atlas Copeo is committed to offer the most energy-efficient technologies on the market. All components of the ZH 350+ are designed to save energy. The high-speed drive means no oil lubrication, no intermediate gears and fewer rotating components, all of which combine to reduce friction and drive down energy costs. The backward leaning impeller and the carbon ring air seals are designed to increase the operating range and provide the highest air volume with the lowest energy requirement Assuring your peace of mind To maximize efficiency and reliability, the...

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O Closed loop water system with thermostatic valve • Extended life time of electronic power components • Constant internal cooling water temperature • Independent of external cooling water quality. O Pre-mounted air intake filter with silencer • Designed for very low pressure drop • Large surface area to cope with harsh environments 0 Integrated blow-off valve with silencer • Pre-installed before aftercooler within the package • No air expansion losses during unload operation • Reduced installation and space costs O High-efficiency coolers with stainless steel tube bundles • Very low...

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• More air flow per unit of power and broader operating range • High thermodynamic efficiency. titanium impellers • Permit frequent and fast load/unload • Optimum strength to weight ratio leads to higher efficiency, rotor stability and synchronous motors • Frictionless magnetic bearings • Water-cooled jackets for effective heat dissipation • No gearbox, no oil lubrication required Control & monitoring • To keep a firm grip on costs, the advanced control system allows you to monitor overall system performance with service indications, malfunction alarms and safety shutdowns. The...

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Superior energy efficiency The ZH 350+ is Atlas Copco's most energy-efficient compressor, offering outstanding energy savings compared to conventional compressors. O Stable internal cooling temperatures Stable internal cooling water temperatures extend the lifetime of electronic power components such as the frequency inverter and motor and increase drive efficiency for stable performance control. 0 Optimally sized coolers The design features an enhanced heat transfer area which has a positive impact on the operation and stability of the consequent compression stages. Minimum energy...

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1 Three-stage compression The three-stage design of the ZH 350+ uses the best-performing technology currently available to achieve high thermodynamic efficiency and lower power consumption. A three-stage design is widely recognized as the most efficient design for achieving compression between 6 to 11 bar(e) / 90 to 160 psig with a turbo compressor, resulting in 4 to 9% more air flow per unit of power and a broader operating range. Coated stages and stainless steel diffusers provide excellent performance stability over time. Efficiency % Mechanical efficiency Aerodynamic efficiency Total...

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Working principle The air enters the ZH 350+ via the air filter O and then proceeds through three stages of compression Q. After each stage, an inter- or aftercooler © cools down the hot air. After the third stage of compression blow-off O takes place before the check valve © and aftercooler to rapidly de-pressurize the compressor's internal air volume during unload transitions. The three stages of compression are driven by two high-speed motors O without a gearbox. The motors and frequency inverters © are cooled in two parallel streams by an internal closed water cooling system, which...

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Optimize your compressor room Thorough assessment of air flow demand profiles in the industry reveal that they can be either stable with limited fluctuations, highly fluctuating and hence less predictable or a combination of both. In all these cases Atlas Copeo can offer you a suitable solution based on a combination of different compression technologies. Stable demand Highly fluctuating demand The ZH 350+ handles air demand fluctuations more effectively than turbo technology could up to now. Its fast transitions between load and unload operation eliminate the need for expensive blow-down...

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CLASS 0: the industry standard Oil-free air is used in all kinds of industries where air quality is paramount for the end product and production process. These applications include food and beverage processing, pharmaceutical manufacturing and packaging, chemical and petrochemical processing, semiconductor and electronics manufacturing, the medical sector, automotive paint spraying, textile manufacturing and many more. In these critical environments, contamination by even the smallest quantities of oil can result in costly production downtime First in oil-free air technology Over the past...

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> Air intake filter and silencer > Discharge check valve > Integrated blow-off valve with silencer > Compensator on air outlet (DIN / ANSI) Cooling circuit > Stainless steel inter- and aftercooler cores > Integrated water-to-water cooler with stainless steel plates > Single point inlet and outlet cooling water connection > Compensators on cooling water inlet and outlet Electrical components > High-speed Permanent Magnet Synchronous Motor > Pre-mounted control cubicle with control power transformer > Advanced electronic control and monitoring system Additional features > Integral baseframe...

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