![]() These are usually used for continuous operation in commercial and industrial applications and may be either stationary or portable. Rotary screw compressors use two meshed rotating positive-displacement helical screws to force the gas into a smaller space. In certain applications, such as air compression, multi-stage double-acting compressors are said to be the most efficient compressors available, and are typically larger, noisier, and more costly than comparable rotary units. ![]() Discharge pressures can range from low pressure to very high pressure (>5000 psi or 35 MPa). Larger reciprocating compressors up to 1000 hp are still commonly found in large industrial applications, but their numbers are declining as they are replaced by various other types of compressors. Small reciprocating compressors from 5 to 30 horsepower (hp) are commonly seen in automotive applications and are typically for intermittent duty. They can be either stationary or portable, can be single or multi-staged, and can be driven by electric motors or internal combustion engines. Reciprocating compressors use pistons driven by a crankshaft. ![]() Beyond about 4:1 design pressure ratio, variable geometry is often used to improve operation. Axial-flow compressors are normally used in high flow applications, such as medium to large gas turbine engines. The area of the gas passage diminishes through the compressor to maintain a roughly constant axial Mach number. Stationary stator vanes, located downstream of each rotor, redirect the flow onto the next set of rotor blades. The diagonal compressor has a lower diameter diffuser than the equivalent centrifugal compressor.Īxial-flow compressors Īxial-flow compressors use a series of fan-like rotating rotor blades to progressively compress the gasflow. The diffuser is often used to turn diagonal flow to the axial direction. Centrifugal compressors are used in small gas turbine engines or as the final compression stage of medium-sized gas turbines.ĭiagonal or mixed-flow compressors ĭiagonal or mixed-flow compressors are similar to centrifugal compressors, but have a radial and axial velocity component at the exit from the rotor. They are also used in internal combustion engines as superchargers and turbochargers. Many large snow-making operations (like a ski resort) use this type of compressor. With multiple staging, they can achieve extremely high output pressures greater than 10,000 psi (69 MPa). Their application can be from 100 hp (75 kW) to thousands of horsepower. ![]() They are primarily used for continuous, stationary service in industries such as oil refineries, chemical and petrochemical plants and natural gas processing plants. A diffuser (divergent duct) section converts the velocity energy to pressure energy. In addition, we offer a comprehensive product and service package in the field of compressor valves.Įvery compressor that leaves our company is a product of our integrated approach - from the planning, through assembly up to and including comprehensive services, we supply you with products tailored to your needs.Figure 1: A single stage centrifugal compressorĬentrifugal compressors use a vaned rotating disk or impeller in a shaped housing to force the gas to the rim of the impeller, increasing the velocity of the gas. With our leading technology, our high quality components, our own compressor control and a comprehensive compressor service, we set the highest standards in terms of individual design, quality and durability under the heaviest conditions. Our reciprocating compressors (API 618, API 11P / ISO 13631) and integrally geared centrifugal compressors (API 617 and 672) are designed according to customer’s requirements and are typically used in refineries, the chemical and petrochemical industries, for natural gas storage, technical gas transportation, power supply and power plants. BORSIG ZM Compression GmbH is one of the world's leading manufacturers of process gas compressor systems.
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