On Cyprus, Green Machine Makes Electricity with Waste Water
Let’s say you live on a sun-struck island with limited fresh-water resources. How would you feed a heat exchanger designed to generate electricity from hot water?
Use treated wastewater, of course.
Gulf Coast Green Energy, of Bay City, Texas, worked with the Middle East Technical University (METU) on the Mediterranean island of Cyprus to build a pilot project that runs campus wastewater through solar water-heating collectors and then through the ElectraTherm heat-to-power “Green Machine.” Cyprus sees up to 340 days of sunlight each year. The Green Machine generates power by driving a heated fluid through a twin-screw expander. The heat comes from PTC1800 solar collection panels from Solitem, a German company.
For the pilot system, the Green Machine was downrated to run at a nominal 18 kW. when the solar array is expanded, the machine will be able to produce 50 kW.
With 12 units in the field, ElectraTherm Green Machines have accrued more than 8,000 hours of fleet run time.