NO.SRS-08
SRS-08
Semi-hermetic Single-stage Screw Compressor
SRS semi-hermetic single-stage Screw Compressors include 5 series totaling 14 models with a displacement of 84 – 500 m3/h @ 2960 rpm. A large application window caters for a wide range of applications. Whereas all major refrigerants can be used, our compressors are optimized for the natural and environment-friendly refrigerants such as Ammonia R717.
The semi-hermetic construction results in a permanent technical leak-proof solution without a shaft seal.
The use of frequency inverters, a permanent magnet synchronous motor and adjustable Vi ensure high efficient operation at varying load and temperature profiles, thus guaranteeing high SEER values.
- “I”type patented profile, best lobe ratio of 5+7, high efficiency.
- The aluminium windings of the PM motor are compatible with ammonia and need no extra protection which can get damaged or deteriorate over time.
- Rotor is made of high- quality forged steel with micron- machining accuracy, high strength, high wear resistance, and long durability.
- The housing is made of high- strength ductile iron, design pressure: 2.8 Mpa.
- High- precision and wear- resistant roller bearings designed for a life span of 80.000 operating hours.
- The internal compression ratio Vi can be adjusted to the existing operating conditions either manually or automatically for highest efficiency, even under varying conditions.
- Integrated oil channels for secure lubrication of all critical spots within the compressor.
- Suction and discharge ports can be swapped from left to right and turned 360° for easy mounting and connection in multiple compressor systems.
Process cooling by SRS Chiller
The expansion of Schäffler Bier production required additional cooling capacity.
Contractor Zimmermann selected the screw compressor SRS08S for its efficiency and small footprint as the plant room could not be enlarged. Together with a plate heat exchanger and shell & tube condenser a compact package of 2050x1200x1920 mm could be achieved.
The permanent technical leak-free technology of the semi-hermetic compressor was an additional feature for the location within the residential area of the town.
The compressor is driven by a frequency inverter between 1500 and 3600 rpm to continuously match the cooling demand.
Technical data:
Cooling capacity Qo: 70,2 kW
Evaporation To: -10° C
Condensing Tc: +35° C
Commissioning: 06 /2019