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Siemens launches new engine for distributed generation applications

Siemens has reinforced its position in gas-fuelled reciprocating engines, launching its first 2 MW gas engine for distributed power generation applications.

The new E-series engines are available in two versions ࢀ” the SGE-86EM for 50 Hz markets and the SGE-100EM for 60 Hz regions. SGE stands for Siemens Gas Engines.
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Eva Garmendia, manager, Siemens Engine Product Line, told Diesel & gas turbine website that both 50 Hz and 60 Hz gen-sets are available to the market.

The E-series gas engine will be used for a CHP application at the Siemens Campus in Erlangen, Germany. The company said the Erlangen Campus will create a new urban district and debut as Siemens’ first CO2-neutral location worldwide.

The Erlangen campus will be Siemens’ first CO2-neutral location worldwide and will utilize a separate cogeneration system for district heating and cooling based on four new SGE-86EM engine gen-sets.

In collaboration with Erlangen’s municipal utility, the campus will operate on a CO2-neutral basis through use of advanced building and energy technology. A decentralized energy system that uses a separate cogeneration system based on four new SGE-86EM engines will provide district heating and cooling for the campus. The approach to the project will adapt to the existing energy infrastructure and will eliminate expensive development or expansion of the existing infrastructure. The four units are expected to be delivered to the site in 2018.

The E-series engines are designed to run on natural gas but Siemens already announced that other fuels will be added soon. In particular, Garmendia said that a biogas engine is planned to debut in the next 12 to 18 months.

The engine uses Miller cycle combustion technology that Siemens said delivers a mechanical efficiency of about 47% and an electrical efficiency of 45.4%. The engine is suited for both prime power and cogeneration applications, as well as for combined heat and power (CHP) applications and commercial, industrial, and municipal projects for decentralized power generation.

Garmendia added “We can offer one of the shortest lead times in the industry, with just 24 weeks from concept to delivery of a complete gen-set.”

Among the technical characteristics of this new engine is a newly designed pre-combustion chamber.

“The Siemens E-series gas engine uses a gas-fed pre-chamber, together with a high-pressure gas rail,” Garmendia said. “The whole system was modeled prior to engine testing, allowing us a better understanding of the test results and enabling us to define a more controlled flow distribution around the spark plug at the ignition moment.”

“This helps to ensure an equal combustion performance for all of the engine cylinders and as a consequence improves balancing.”

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