Sc series
12Pages

Catalog excerpts

Grasso Grasso SC Series Screw compressors forindustrial refrigeration GEA Refrigeration

2 Grasso screw compressors reflect the simplicity of design, optimal energy efficiency and long lifetime of components combined with quiet operation and smooth running features. One of the main targets, during the design of a new compressor, is to find simple solutions whilst using standard components. As a result, Grasso screw compressors incorporate unique selling proposition and innovations which guarantee fast and efficient maintenance on-site. From day one in the development of a Grasso screw compressor, our experienced team of engineers takes care of the important aspects of design...

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3 Grasso screw compressors are designed for compression of refrigerants applied to industrial refrigeration, air conditioning, heat pumps, and gas compression. They are characterized by over 50 years of experience as well as continual developments and patented innovations in screw compressor technology. Developed especially for applications in industrial refrigeration and air conditioning with capacities of around 200 to 8,700 kW (57 to 2,476 tons), Grasso screw compressors can be used for booster and high pressure (28 bar/ 52 bar), single- or two-stage and heat pump applications up to 52...

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4 The SH series screw compressors were developed especially for the smaller volume flow rates of the Grasso range. Due to optional integration of package components like suction and discharge check valves, suction and oil filters, into the compressor, they are more than bare shaft screw compressors. They are a step forward to an entire compressor package. With their simple design and the removal of many connection points they are characterised by a compact, light and space-saving construction. The package design has been simplified by integrating the entire oil management system (with only...

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5 LT series screw compressors have all the latest features of Grasso screw compressor technology. The tandem slide system together with the compressor control device offers new possibilities for combined Vi part load adjustment. LT series screw compressors are installed in the large series screw package in the traditional manner. The optimal Vi-values for compression in full and part load conditions are calculated and hydraulically adjusted by the compressor control device. LARGE series screw compressors (LT series) Technical features Optimized main • rotor dimensions result in high COP...

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8 All Grasso screw compressors are available for two pressure levels: 28 bar and 52 bar maximum design pressure. The 52 bar compressors were introduced as a result of hot gas defrosting requirements with CO2, new heat pump applications with higher temperature levels and other applications with a higher pressure level. The new 52 bar series comprises 22 frame sizes covering a range of swept volume flows from 231 to 8560 m3/h. The increase of the permissible design pressure up to 52 bar results from the intention to defrost CO2 cascade refrigeration systems by hot gas. The waste-heat...

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9 Refrigeration capacity (kW) Compressor type Refrigeration capacity CO2 -50/-5 °C Refrigeration capacity CO2 -50/+5 °C Heating capacity (kW) Compressor type Heating capacity NH3 +35/+80 °C 52 bar compressor refrigeration capacity with CO2 52 bar compressor heating capacity with NH3

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10 Technical solutions • with highest engineering standards to minimize the operating costs (energy consumption) and noise level are characteristic features of Grasso screw compressors. • The Vi adjustment at full and part load operation minimizes (down to part loads of 40%) the energy consumption. As a result operating costs up to 20% can be saved. • The set of rotors with 5 teeth (male rotor) and 6 teeth (female rotor) enlarges the wide field of operating conditions for compressors with an optimized Vi and enables the operation at higher condensing pressures, since unequal loads on the...

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11 For us from Grasso, quality and reliability are the key terms. Optimal maintenance is also essential to avoid breakdowns and maximize the productivity of your plant. Therefore our objective is that the products we supply are used in the right application, properly installed and maintained with the highest standards. With this in mind, we offer you the support of a worldwide service and backup network, to your service 24 hours a day, 7 days a week! A guarantee for maximum safety and reliability for your installation. Grasso‘s production facilities in Europe, sales organization and service...

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GEA Grasso GmbH and GEA Grasso B.V. are among the world’s leading manufacturers of state-of-the-art reciprocating and screw compressors. Our innovative packages, chillers and components for industrial refrigeration plants, freezing and air conditioning systems are also recognized for their exceptional reliability and efficiency. With headquarters in the Netherlands and with production facilities in the Netherlands and Germany, more than 90% of our production is exported to countries all over the world. Grasso is readily accessed and at your service, through its sales offices in Australia,...

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