Story: Geothermal energy
New Zealand geothermal fields produce wet steam – a mixture of steam and hot water. This bore at Wairākei is being tested, its water producing a small rain shower.
Turbines in a geothermal power station need dry steam, so New Zealand engineers had to invent a way to separate steam and hot water when they designed the Wairākei power station.
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GNS Science
Reference: CN28590/44
Photograph by Lloyd Homer
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