Metso's Valves to Control Flow at Kenya's Geothermal Power Plant

Green Energy Group AS, a Norwegian company, has ordered for the 10th time Metso's Neles rotary control valves and triple eccentric disc valves to use in company's pilot plant in Kenya. The valves will control the steamy process flow coming from the boreholes drilled into the ground. The loosened soil from the ground can include silica and sand, which sets special requirements on the valves to be able to provide accurate control ability in rough conditions. One of the challenges in these applications is the silica scaling.

"Not many valves are able to operate in this type of environment," says Snorri Einarsson, Product Manager, Steam Systems, Green Energy Group AS.

"We have also benefited from Metso's Nelprof valve selection program, which saves time since it is easy to use to calculate flow characteristics. The next step will be to get all the plants hooked up to the Metso FieldCare™ Device and Asset Management software to carry out predictive maintenance with live monitoring of the valve performance," he continues.

Green Energy Group is famous for building up geothermal power plants quickly due to its unique modular concept. Traditional deployment of geothermal power plants takes many years, from project start to power online, and requires large investments to complete. Green Energy Group delivers a unique power plant system that is prefabricated in ready modules and commissioned on-site in weeks. This year Green Energy Group is delivering four geothermal power plants and has received an order for five more plants for next year.

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