Civil Engineering April 2021 | Vol 29 No 3

50 April 2021 Civil Engineering Bauer machines have been tantamount to ultimate performance, quality, and ongoing innovation since the 1960s. The equipment engineering business works closely with the company’s own specialist foundation engineering busi- ness. This is a key factor for creating great innovative strength and ensures that the company remains the technological leader in the market. MOTIVATION FOR AN ENERGY- EFFICIENT POWER SYSTEM Reduction of energy consumption on con- struction sites is an ecologically as well as economically justified objective. In addition to reducing emission of CO 2 and other pol- lutants, reduction of expenditures on diesel is a highly motivating factor, contributing to the efficiency of a construction site. BENEFITS FOR THE USER Bauer’s Energy-Efficient Power (EEP) contains numerous modifications to improve efficiency. The drive system of the main winch, with its significant share in energy consumption, especially during Kelly-drilling, was fundamentally re-engineered. The new system makes it possible to recover the energy released during the lowering of the tool. Thus, the fuel consumption can be significantly reduced, especially when drilling deep boreholes. Further benefits are increased efficiency during lifting, higher speed, and indepen- dent parallel operation of several func- tions (e.g. main winch, crowd, slewing and rotary drive). Energy consumption by all ancillary devices, such as fan drives and pressure supply units has also been optimised. This not only reduces energy consumption, but also noise emissions. The already low values of pressure loss in hydraulic hoses and valves were further reduced. The speed of the diesel engine adapts dynamically to the current power require- ment of the equipment with the aim of keeping the speed as low as possible. This makes the equipment sig- nificantly quieter, especially when using auxiliary functions (e.g. auxiliary winch or slew drive). Info BAUER Maschinen Group www.bauersa.co.za Let Bauer take you into the future with energy-efficient power The Bauer Maschinen Group is the world market leader in the development and manufacture of specialist foundation engineering equipment. The BAUER Maschinen Group is the leading supplier of specialist foundation engineering equipment worldwide. BAUER Technologies South Africa (PTY) Ltd • Unit 215 • Palms Office Park 519 Nupen Crescent • Midrand 1695 • South Africa • info@bauersa.co.za www.bauersa.co.za