In the MAN Truck & Bus Group, the MAN Nuremberg plant is the International Competence Centre for the development, production, and sale for future efficient engine technology. For the group, the plant is the consolidated body of expertise where about 3,500 employees are concentrated and up to 100,000 engines are produced every year. Understandably, the plant has a high electricity and heat demand. To complement this demand, they opted for a MAN cogeneration solution that satisfies all the plants base-load needs.

The goal of the installment was to supply the assembly hall with electricity and heat to reduce the output of the company`s own hard coal power plant. The solution they opted for also provides for their facilities energy demands without a negative impact on the environment or future.

In 2016, the GG260 CHP system from Sokratherm was installed in the Nuremberg plant. At the heart of the system is a MAN E3263 E302 natural gas engine with 275 kWmech at 1.5000 rpm (50Hz). The focus was deliberately chosen on a naturally aspirated engine with a combustion air ratio lambda = 1, as this type of combustion produces increased heat. Additionally, the optimised combustion and the cylinder head with 4-valve technology gives a higher overall efficiency of 93.6% with 54.0% thermal and an outstanding 39.6% mechanical efficiency. Into the bargain the unit also has a data logger with standardized sensors and sensor positions, and a flow-optimised crankcase.

Through its intensive research, MAN engine development finds responses to the environmentally relevant issues of reductions in consumption and emissions. The result is a truly optimised, local, highly efficient, and stable energy and heat output that reduces energy consumption, bills, and the carbon footprint. The engine has now been running for over 25,000 hours and has produced more than 6,000 MWh of electricity and 10,000 MWh of heat in that time. In addition, by doing without the hard coal power station for this energy produced, more than 1,000 tons of CO2 have been saved.

 

Benefits of cogeneration

CO2 emissions

More than 1,000 tons of CO2
avoided

House consumer symbol

More than 6,000 MWh of electricity and
more than 10,000 MWh of heat

 

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