Monday, August 29, 2016

Japan: Early Geothermal Energy Trials Prove No Interference With Onsen Operations

Fuel-Free, Emission-Free Power from a Geothermal District Heating System (News Release)

Reno, Nevada based ElectraTherm, has announced that its Power+ Generator™ 4400 commissioned in April 2016 in the city of Beppu, Japan has exceeded 3,000 of operational runtime.

The Power+ runs off low temperature geothermal steam from a small district heating system. As the Power+ generates power, it also provides cooling with zero environmental impact or imposition on the onsen’s primary function as a community resource. The power generated is sold to the local utility at an attractive feed-in-tariff rate for renewables.

ElectraTherm utilizes Organic Rankine Cycle (ORC) and proprietary technologies to generate up to 110kWe of electricity from low temperature water ranging from 77-122°C. At this site, the onsen provides varying flows of geothermal steam at approximately 110°C. Unlike other renewable sources, geothermal heat is baseload, providing a continuous hot water flow with power generation capabilities 24/7. Hot geothermal water is the fuel used to create a high pressure vapor that expands through ElectraTherm’s patented twin screw power block, spinning an electric generator to produce clean electricity while simultaneously cooling the water up to 20°C.

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