GE’s Distributed Power business delivered its first Jenbacher J920 natural gas engine project to E.On Hanse Wärme GmbH’s Stapelfeld plant, which will be its largest combined heat and power (CHP) plant using a gas engine.
E.On Hanse Wärme is investing about $9.1 million in the plant, which, once completed, will generate enough electricity to supply more than 21,500 households east of Hamburg. This week, the CHP plant’s most important components, the J920’s engine block and generator, are being delivered.
With an electrical output of more than 9,500 kW, it will become E.On’s largest CHP plant using a gas engine in northern Germany. The engine alone tips the scales at some 76 metric tons, and all three of the components have a combined weight of around 160 metric tons, which is around as much as a fully grown blue whale. The large components are being delivered by heavy-goods transporters directly from GE’s Jenbacher plant in Tyrol, Austria.
The heart of the CHP plant is the current largest Jenbacher gas engine from GE, the J920 FleXtra. In the 10 MW engine class, the J920 FleXtra achieves peak values of electrical efficiency of up to 48.7 percent (50 Hz). GE and E.On Hanse Wärme have developed a CHP concept for this plant, which enables it to achieve a total efficiency of around 95 percent.
With electrical output of more than 9,500 kW, the gas engine can generate more than 76 million kwh of electricity per year. This is sufficient to operate more than 400,000 refrigerators with a freezer compartment or more than 1.3 billion fans. At the same time, the CHP plant can generate more than 80 million kwh of heat. This heat is then fed into the existing heating network and supplies the households connected to it.