This screw compressor is designed to maximize efficiency
With a design for maximizing energy efficiency, the Grasso M is a screw compressor for industrial and marine applications delivers significant savings in total cost of ownership. The M models (photo) consume an average of 3–5% less drive energy than previous screw compressor units. Further, the Grasso M compressors are operated without an oil pump. For refrigeration system operators, this means lower energy and spare parts costs, the company says. The energy efficiency of these compressors is based on the stepless capacity control in conjunction with the extended, variable internal-volume ratio range. The variable speed from 1,000 to 6,000 rpm enables a wide range of applications and maximum efficiency at full and partial load. The sophisticated design and low parts complexity combine reliability and ease of servicing with high efficiency. This saves considerable energy, service and other costs, also contributing to a reduction in the overall operating costs. — GEA Group, Dusseldorf, Germany