Improving Pump-Motor Reliability by Changing Stiffness

Main Types of Compressors  The compressor is the heart of a mechanical refrigeration system.  There is the need for many types of compressors because of the variety of refrigerants and the capacity, location and application of the systems.  Generally, the compressor can be classified into two basic types: positive displacement and roto-dynamic.

What Is a Pump? A pump is a machine or device for raising, transferring, or compressing fluids. Pumps represent the largest single use of power in the industry (31%) by motor-driven equipment. Process variables, including pressure and flow of gases and liquids, have long been regulated using mechanical clutches, throttles, and adjustable inlet guide vanes. Pumps often operate as a variable torque load, a load that increases as the speed increases. These mechanisms waste energy, require frequent maintenance, and provide inaccurate control.