MTU CFC Solutions www.mtu-cfc.com Fuel cell ... - Fuel Cell Markets

MTU CFC Solutions GmbH
81663 Munich
Germany
Phone +49 89 6 07-31 500
Fax +49 89 6 07-3 15 09
info@mtu-cfc.com
http://www.mtu-cfc.com
MTU CFC Solutions
MTU CFC Solutions GmbH, a Joint Venture company
of MTU Friedrichshafen and RWE Fuel Cells, develops
and manufactures stationary fuel cells for generating
power and heat.
MTU’s long tradition can be traced back to the
past going over more than 100 years. The unique
experiences gathered throughout this time form the
potential MTU could rely on at any time to develop
new products and to lauch precursory innovations.
Today, in line with best MTU tradition, MTU CFC
Solutions is working to advance the fuel cell named
HotModule to full-production status, an absolute
innovation that holds the power to revolutionize
the generation of energy in the near future.
The sub-megawatt fuel cell power plant is a
collaborative effort utilizing the Direct FuelCell ®
technology of FuelCell Energy, Inc. and the
Hot Module ® balance of plant design of MTU CFC
Solutions GmbH, a subsidiary of DaimlerChrysler.
We go the whole way: from the development,
via testing, through to commercialisation of the
system. Currently we are engaged in research,
development, preseries and pilot production of the
MTU HotModule at our Ottobrunn site near Munich.
Strategic partnership
MTU and Fuel Cell energy, Inc., Danbury,
Connecticut, USA, are partners of a technology
and supply exchange agreement.
MTU is a shareholder of FCE (NASDAQ –
FCEL) since 1989.
www.mtu-cfc.com
© MTU CFC Solutions GmbH. Subject to modification in the interest of technical progress.
Printed on chlorine-free bleached paper.
MTU CFC 06 133 (70 10E) 2/06 – Printed in Germany – CFC 2006 – 10
Fuel cell
hotmodule

ò Modularly
built
ò Environmentally
sound
ò Efficient
ò Suitable for heat
and power
generation and
trigeneration
of power, heat
and cold
ò Fuel flexibility
ò Safe operation
ò Compact system
The future of energy supply.
Energy is the driving force in all areas of our modern world.
And our energy requirements are increasing. We are currently faced
with the challenge of ensuring a sustainable energy supply.
Fuel cell technology is one of the most
promising solutions.
At unrivaledly low emission rates, the
HotModule generates very high electrical
efficiency. The fuel-cell-power-plant realizes
a vision of an environmentally friendly
decentralized power supply, run by small
and efficient units.
The solution
Application fields:
Digester Plant Leonberg, Germany Telekom, Munich, Germany Hafen City, Hamburg, Germany
Leading companies from different branches
are working together with MTU CFC Solutions
to develop and implement innovative fuel cell
solutions. MTU and its innovative partners
have secured a solid and lasting technological
leadership and competitive advantages, also
setting an example in environmental protection.
Energy utility Beverage industry
Sensitive
production areas
clean
RWE, Essen, Germany
Pharmaceutical and
cosmetics industries
hotmodule
highly efficient
simple
quiet
reliable flexible
low-maintenance
Sewage treatments
and biogas plants Food industry Telecommunications
environmentally friendly
Large commercial
enterprises u.v.m.
2 | 3

Technical data
ò 250 kW electric
ò Bis 220 kW
thermal
ò 55% stack
efficiency
ò Operating tempe-
rature of 650°C
ò Operating at
ambient pressure
Characteristics
High efficiency
ò Overall efficiency
of 90%
ò Total electrical
efficiency of 47%
Environmental
friendly
ò No SO2
and no NOx
ò Ca. 30% CO2
reduction
Fuel flexibility
ò Natural gas
ò Biogas,
sewage gas, etc.
High value heat
ò Temperature of
more than 400°C
ò Variable electricity
/ steam ratio
Low cost
ò Low maintenance
ò Metallic construc-
tion materials
ò Nickel catalyst,
nickel anode
hotmodule
Brilliantly simple. – Highly efficient.
Exhaust gas + heat output
Simply brilliant.
Brilliantly simple that describes
the principle of generating energy
using fuel cells, cleanliness,
safety and high efficiency from
the entire system.
Efficiency is the outstanding feature of the
HotModule. The fact that we have succeeded
in accommodating all hot parts in a single
housing not only makes parts of the periphery
superfluous but also enables new standards
in efficiency to be set.
Without any flame and without moving masses
such as turbine blades or reciprocating pistons,
it converts the energy contained in the fuel
directly into electricity. The electro-chemical
processes employed enable not only high
efficiencies, but they also keep emissions at
an exemplary low level. The exhaust air is
free of noxious gases as nitrous and sulphur.
Up to 30% more electrical power in comparison
with conventional energy generation.
Besides this the exhaust air of the HotModule
consists ofwater vapor, nitrogen and residual
oxygen from the air.
Mixing chamber
and catalytic burner
1. Media Supply
MCFC stack
Exhaust gas + heat output
Anode gas
The System
Air oxygen
Manifold
3. Controll unit
and DC/AC inverter
2. MCFC
HotModule
Power output
Circulating cathode gas
The HotModule consists of three subsystems:
1. A gas cleaning system upstream
of the HotModule: This unit conditions
the fuel gas for the fuel cell process.
2. The central steel container:
It contains the fuel cell stack; a mixing
chamber for fresh air, anode gas and
cathode air; a collector shroud for the
cathode exhaust; circulating fans and a
heater which is used to start the process.
3. An electrical equipment enclosure:
System controls are contained in it,
and an inverter to convert the direct
current from the fuel cell into alternating.
EnBW, Michelin,
Karlsruhe, Germany
4 | 5

Intelligent energy
supply indications
Power
ò Highly efficient
(47% bis 65%)
ò High quality
ò Failure free and
uninterrupted
ò Decentralized
generation
ò Environmentally
friendly
Steam
ò High temperatures
(> 300°C)
ò Process heat
for further power
production
ò Cooling with
absorption
cooling-chillers
ò For sterilization
ò For heating
Hot Air
ò High temperature
level
ò Free of polutants
ò For Heating
ò For sterilization
ò For drying
hotmodule
With the power
out of the fuel cell.
The Result: Up to 30% more electrical power in comparison
with conventional energy generation and valuable useful heat
and all this with almost no harmful emissions.
The »jump« ó in the efficiency curve
represents an optionally installed
downstream steam turbine.
The thermal energy is used to further
increase the electrical efficiency.
Conventional
energy sources
ò Natural gas
ò Coal gas
ò Residual gas
ò Methanol
Electric efficiency in %
70 Anode Electrolyte Cathode
60
50
40
30
20
10
Fuel cell
PAFC
Diesel and gas engines
0,1 1
10 100
1000
Plant power in megawatts
ó MCFC, SOFC without
and with steam turbine
ó Gas and steam power plant
ó Steampower plant
The HotModule can be used for almost any
application. The system automatically generates
the required hydrogen from a number of energy
sources and can therefore be integrated into
practically any existing infrastructure.
Even gas from renewable sources is ideally
suited for generating energy using the
carbonate fuel cell.
Usable energy sources
+ Steam turbine
Gas and steam power plant
Steampower plant
Industrial gas turbine
ó PAFC, Phosphoric
acid fuel cell
ó Diesel and gas engines
ó Industrial gas turbine
Renewable
energy sources
ò Biogas
ò Sewage gas
ò Landfill gas
ò Mine gas
Electron surplus
Gas-supply
If a hydrocarbon energy source such as
methane |CH4| and water |H2O| is added
to the carbonate fuel cell, hydrogen |H2| is
released. This hydrogen |H2| reacts with
the carbonate ions |CO3 - - | in the electrolyte
to form water |H2O| and carbon dioxide |CO2|.
˘ This releases electrons | - -|.
A look at how the carbonate fuel cell
functions makes the simple
electrochemical principle clear:
The cell is structured like a sandwich.
It generates power and heat when the anode
is supplied with hydrogen |H2| and the cathode
with oxygen |O2|. In between these two is a
lithium and potassium carbonate electrolyte.
Cell
temperature
650 °C
Direct current
The carbon dioxide |CO2| and the atmospheric
oxygen |O2| are supplied to the cathode.
Electrons | - -| are consumed, with new
carbonate ions |CO3 - - | constantly being
formed on the cathode.
˘ This releases heat.
Air oxygen
Exhaust air + heat
The new carbonate ions |CO3 - - | in turn
replenish the electrolyte. The carbonate ions
migrate through the electrolyte to the anode,
thus completing the electrical circuit.
The principle
The individual cells are identical
and can be easily combined
into an assembly.
Electron deficiency
6 | 7