Construction World March 2016

At the front left is the three-phase synchronous generator, at the right is the diesel engine, and in the middle is the Stiebel transmission with a powershift driven pump acting as a link between the com- SMART DRIVE ADVANCES bustion engine and the hydraulic/ electrical systems.

Key statistics • To play its part in limiting global warming to 2 degrees, the buildings sector must reduce emissions by 84 gigatonnes by 2050 – the equivalent of not building 22 000 coal powered plants. World GBC has committed to achieving this goal by enabling a market transformation. • This large-scale reduction of emissions is possible – but it will take transformative action and collaboration. • By 2018, green building in the US will account for over 3,3 million jobs, more than one third of the entire US construction sector. • Green Building can improve people’s health, well-being and productivity – for example, improved indoor air quality can lead to productivity improvements of up to 11%.

For these special challenges, flexibility is needed, particularly in regard to transmissions. Therefore, the specialists at Stiebel-Get- riebebau – located in Waldbröl, near to Cologne – individually tune your drives for mobile hydraulic applications to act as a dynamic link between the combustion engine and the hydraulic/electrical system. Powershift pump on the drive side Currently, a power take-off transmission for pumps that was specially developed at Stiebel-Getriebebau is helping construction and agricultural equipment become more energy-efficient. With a maximum input power of 520 kW, a power take-off output of 200 kWon each axle, and a power take-off ratio of 1:0.8 for the engine speed, it is part of a modular engine-transmission unit that enables economical energy and fuel consumption. As a diesel-electric hybrid solution, it is also an environmentally friendly solution. In normal operating mode, the diesel engine and the trans- mission are in use . These operate the hydraulic auxiliary equipment and a generator that charges the energy storage system. The braking energy is also used sustain- ably, with the help of the powershift pump output of the power take-off transmission for pumps, and supplied by the generator as electrical energy to the energy storage system. Disconnecting the auxiliary equipment and returning the energy from the energy storage system to the drive train then enables particularly effi- cient vehicle operation. Thus, maximum efficiency can be achieved by the hybrid diesel-electric power generation, increasing traction and reducing operating costs. “Our goal is to help shape technological progress, especially in such projects where all of our experience and knowledge are in demand. We provide very precise developments in this field, matching the require- ments down to the smallest technical detail,” says Paul Hermann Schum- acher, managing director of Stiebel-Getriebebau. “The demand for environmentally friendly electrical traction drives has increased noticeably in recent years. And the proven flexibility of our compact, robust and precise transmissions will also continue to play an ever-increasing role in this field, whether for tractors, harvesters, loaders, excavators, or other construction and agricultural machinery of reputable manufacturers” At Stiebel-Getriebebau, the technical details are already taken into consideration during the selection of the material. For example, the shaft seals of Stiebel power take-off transmissions for pumps are made of viton, while the toothed hub profiles are made of chromium molybdenum steel. Oil-lubricated hollow profile shafts prevent wearing of the pump shafts. The SAE motor connections provide thermal relief of the torsional vibration dampers using precisely matched air vents. The diversity in the transmission ratios also provides a high degree of flexibility. In many cases, oil cooling can be eliminated because Stiebel combines a special lubrication system with strongly ribbed housings. This results in high efficiency. In addition, there are many special options that will also be implemented in future energy-efficient transmission solu- tions. Visitors can look forward to the innovations from Stiebel-Getriebebau at the upcoming bauma trade fair. More than ever, intelligent and sustainable drive solutions that help reduce fuel consumption and thereby ensure environmentally friendly and efficient operation are in demand today in the field of construction and agricultural machinery. >

NET ZERO certification • To target 2 500 commercial green building certifications, representing around 10 million square metres of gross building area • A target of 10 000 residential green building certified homes • A target of 12 000 professionals to be trained in green building principles and practices. • 10% of local government staff to be trained in green building principles and practices. • Inspiring and assisting fellow African national to establish and capacitate GBCs in their countries by providing support with rating tools, training, and so forth, with a target of five more established African GBCs. Terri Wills, CEO of the World Green Building Council, said: “The Green Building Council South Africa is demonstrating real leadership on green buildings by launching its ambitious commitments at these critical climate change negotiations in Paris. “We know how to build bigger and bigger. The challenge is to build bigger and better. And it is commitments like these that will help to transform the global buildings industry so that not only is a 2 degree world possible tomorrow, but we can realise the benefits from this new way of building – today.” The GBCSA has an extensive member base of over 1 300 member organisations each represented by thousands of individuals who have become activators and imple- menters of green building, in both

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the private and public sector. The GBCSA exists to transform the way the built environment is designed, constructed and operated, to be environmentally sustainable. This includes a crit- ical focus on radically reducing harmful emissions resulting from building practices.

Brian Wilkinson, CEO of Green Building Council South Africa.

CONSTRUCTION WORLD MARCH 2016