Corporate Social Responsibility Report (810 KB) - Tognum AG

01 Corporate Social Responsibility | Report, June 2008 | Environmental protection, production and sites
bon dioxide that others. Tognum is aiming to steadily reduce its emissions. Parts of our systems
are involved in European emissions trading. The aim is to reduce emissions in the second trading
period (2008-2010) to such an extent that Tognum will not have to exhaust its quota of emissions
rights.
Power and heat for manufacturing Tognum products are increasingly being generated by
combined heat and power (cogeneration). This technology comes from the Tognum companies
MDE, MTU and CFC Solutions. Using cogeneration units and a fuel cell, the company makes
highly efficient use of the energy and thus reduces CO 2 emissions.
As of June 2008, a high-temperature fuel cell at the Friedrichshafen site will supply the company's
health insurance fund building (currently under construction) with heat and power. The
'HotModule' from CFC Solutions, a subsidiary of Tognum, uses natural gas to generate 30 percent
more electrical energy than a conventional power plant of the same size. The fuel cell generates
245 kilowatts of power and 180 kilowatts of heat. The offices are heated by the warm water
and the power is fed into the public mains grid. Energy is generated through an electrochemical
process in the fuel cell module, i.e. without combustion. No sulphur dioxide or nitrogen oxides
are produced. The exhaust air from the HotModule consists only of water vapour, nitrogen and
the residual oxygen from the air.
Cogeneration units are in operation at both Tognum sites in Friedrichshafen: the second
natural gas cogeneration unit was started up in 2007. Using technology from the in-house
corporate association, the two cogeneration units cover approximately a quarter of power and
heat requirements. The combination of power and heat means that the company uses 73 percent
of the energy contained in the natural gas. This high level of efficiency results in savings of 1,700
tons of CO 2 a year in comparison to the separate generation of power and heat (see diagram).
Operating for 7,500 hours a year, the cogeneration unit generates 13,900 MWh of power and
8,800 MWh of heat per year.
At the Augsburg site, the Tognum subsidiary MDE uses a natural gas cogeneration unit to provide
economical and environmentally friendly power and heat for the production hall, warehouse
and administrative building. In comparison to a conventional energy supply, MDE thus manages to
reduce carbon dioxide emissions by 50 percent and also reduces primary energy use by 35 percent.
Power savings through brightness-dependent lighting control
Lighting in large workshops is controlled on a need-orientated basis with over 30 kW of
light, in order to save energy and automatically ensure ergonomic and even lighting. In lighter
environments, a third of the lights are switched off automatically in turn. The control system
also takes the early and late shifts into account. These switch-offs result in an annual power
Combined power/heat
reduces carbon dioxide
emissions at Friedrichshafen
site:
CO 2 emissions generated
by MTU heating systems
(in tons)
8000
6000
4000
2000
- 13%
2006 2007
Cogeneration unit savings
CO 2 emissions
Picture on left:
The cogeneration
unit has been
supplying MTU Plant
1 with power and
heat since 2007.
Picture on right:
Cogeneration unit at
MDE in Augsburg:
50 percent reduction
in CO 2 .
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