Organic Rankine Cycle
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Publication Name: State-of-the-art technology in rural Germany biogas
Original File Name Searched: ORC_Trechwitz_EN.pdf
Page Number: 001
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Güntner GmbH & Co. KG Hans-Güntner-Straße 2 - 6 82256, Fürstenfeldbruck Germany
State-of-the-art technology in rural Germany
If you think that exceptional things take place only in exceptional locations, think again. In the village of Trechwitz, a rural area not far from the city of Potsdam in Germany, one of the most modern biogas plants in Europe is in operation because of the vast energy potential from manure.
The successful development of these modern biogas plants started a few years ago, when the local farmers Hergen Wessels and his son Timo Wessels wanted to have a biogas plant for their own farm and realized that there was no technology designed to fit their plans. Therefore, they started to develop their own concept adapted speci- fically to their farm. The success that followed led Hergen Wessels and his son Timo to organize a group of companies to develop, operate and maintain biogas plants. At present, there are approx. 80 employees working in the different areas.
The first plant completed by these companies was in 2008, at Timo Wessels’ farm.
The plant in Trechwitz was built to capitalize on the manure and slurry generated by a number of agricultural operations in and around the village. Among these operations are Wessels’ own cow barns in Damsdorf, a riding stable in Trechwitz and a chicken farm in Damsdorf. In the summer of 2012, another cow barn was added on the site of the biogas plant itself, holding 120 cattle. When the biogas plant started operating in January 2012, corn and sugar beets were used in addition to manure and slurry. Facility Manager Radko Doldzhev explains: “After only a few months, we started to operate the plant completely without additional plant mass. Every day, we process 45 tons of manure and slurry. The logging of the supplied material is done automatically: the trucks drive up to the remote-controlled weighing machine and the data is imme- diately logged in the computer. We generate about 500 kilowatt-hours of power per hour. Since the plant has a total capacity of 800 kilowatt-hours, there is still potential to generate more electricity.”
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