APPLICATION REPORT | POWER
P... Seasight’s hoist, destined for the US
“Mona Lifting has installed a large number of these cranes in the last few years.” An example is Balnacarn powerhouse, at Glenmoriston, near Fort Augustus in the Scottish Highlands. This is a 700kW high- head hydro scheme. The powerhouse is beside a domestic property, so particular attention had to be paid to the visual impact and to noise. A relatively slow turbine and variable speed ventilation system were specified to reduce noise at source and the powerhouse was designed to be ‘rustic’ and as small and low as possible. This required the intelligent use of space within it to accommodate the large and relatively heavy turbine. Mona Lifting designed and manufactured a 7t x 3.8m span manual underslung overhead travelling crane to fit the parameters. Waste-to-power is generally thought
of as small-to-medium in scale; but Konecranes in Dubai is involved in what will become one of the world’s largest such schemes. The Warsan facility will treat 5,000 tons of non-recyclable municipal solid waste a day, which adds up to 1.9 million tons a year. It will be burned to produce 200MW of electricity. In addition, metals will be recovered and construction materials will be produced from the bottom ash. Konecranes will provide four 28t x 30m span fully automated Waste-to-Energy process cranes for the project; they will be equipped with 18m3 grabs. Konecranes will also supply a 65t x 19 m span crane for boiler maintenance. The cranes include
smart features such as sway control, shock load and slack rope prevention, protected areas provision and target positioning.
Konecranes digital service Truconnect will monitor crane use and maintenance. And, since this is after all a recycling plant, the cranes themselves will also recycle the energy they produce: Konecranes’ DynaReg system regenerates the power that is produced by the hoists lowering their loads and feeds it back into the grid. The cranes will be delivered to the site this year, with handover in 2024. That last ability, of hoists that are
lowering loads being able to feed the regenerated electricity back into the grid, is central to another power application – one that may just turn out to be critical in the adoption of renewable energy. See the p26 box (‘Hoist Stores Power’), which explains how the humble hoist might possibly save the planet, or at least contribute significantly to salvaging what is left of its current climate. Optimists read on. ●
Q A manual lift hoist from Mona for a small hydro project
www.hoistmagazine.com | May 2022 | 29
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