Siemens was the principal contractor for
equipping the Simmering power plant in
Vienna, Austria, with updated and environ-
mentally friendly technology including two
SGT5-4000F gas turbines and two associated
unfired heat recovery steam generators
(HRSGs) equipped with catalytic reactors.
power plants and helps them remain
competitive in fast-changing market
conditions.
At the Simmering1 power plant in
Vienna, Austria, which originally commenced operation back in 1978, this
steam power plant has been converted
into an environmentally friendly combined-cycle power plant with district
heat extraction. As a result of the conversion, overall fuel factor is approximately
81% and saves about 1. 33 million
tonnes of CO2 and 1.85 tonnes of NOx
emissions annually. An added benefit is
that this repowered plant not only efficiently uses the energy of the fossil fuel,
but also solar energy.
Vienna’s biggest photovoltaic system has been integrated into the
façade on the south side of the building. The capacity of the solar system,
with a surface area of 311 m2, is 30.8
kW peak with an annual electric
power production of 22 000 kWh.
Being located in close proximity to
Vienna’s city center, there are almost
no power transmission losses. The
Simmering combined-cycle power
plant (CCPP) therefore makes a significant contribution to the climate protection program of the city of Vienna.
Through refurbishment and lifetime
extension of the existing infrastructure,
the plant output could be doubled with
minimized consumption of resources.
After a conversion time of only 27
months, the total electrical capacity of
unit 1 at Simmering power plant was
increased from 378 to 827 MW in condensing mode. Simultaneously, district
heat capacity was increased from 280
to 450 MW. The power plant supplies
electricity to about 800 000 households and district heating to about
200 000 households in Vienna.
Siemens was the principal contractor
for equipping the Simmering power
plant in Vienna with updated and environmentally friendly technology, such as
two SGT5-4000F gas turbines and two
associated unfired heat recovery steam
generators (HRSGs) equipped with catalytic reactors. As part of the modernization, the existing Siemens steam turbine
was also modified to the current technology. This flexible combined-cycle plant
allows operation in a wide range from
40% part load with one gas turbine up to
maximum power and steam production
in 2+ 1 operation depending on Vienna’s
heat and power demand.
Plant owners can benefit in several
ways from a repowering project. First,
the existing station can remain in
operation while the new part of the
plant is being constructed. Second,
after repowering is complete, the efficiency of the plant increases to competitive levels. Third, specific emissions levels are reduced due to the efficiency increase and the low-NOx
combustion technology utilized in the
updated gas turbines.
And finally, existing assets are further utilized, leading to reduced capital
costs and lower recruiting costs since
the personnel of the existing plant can
operate the repowered plant.
SEE DIRECTLINK
WWW.DIESELGASTURBINE.COM
MAN Diesel
PBB GmbH, Germany
One MAN B&W 7L35MC-S two-stroke engine has been chosen for a
CHP plant to a site in the city of Brake
near Bremen, Germany, by PBB GmbH,
the cogeneration independent power
producer company (IPPC) based in
Oldenburg, Germany.
MAN Diesel A/S’s Polish licensee H.
Cegielski, Poznan S.A. has delivered
the 7L35MC-S that supplies 4. 2 MW of
electrical power to the national grid
and 3. 6 MW thermal power to a palm-oil refinery situated nearby.
The low-speed crosshead uniflow
diesel engine is fired by crude palm oil
with a total acid number (TAN) of up
to 15 mg/KOH/g, at a heat rate of 7400
kJ/k Wh at site ambient conditions, corresponding to an efficiency of 48.6%.
MAN Diesel said that total plant efficiency in CHP mode has been calculated to exceed 87%.
The plant, commissioned during
2009, is equipped with a selective catalytic reduction (SCR) system, an oxidation catalyst and an electrostatic precipitator to fulfill the strict German TA-Luft air emissions legislation.
The MAN B&W 7L35MC-S two-stroke engine
in the CHP plant near Bremen is fired by
crude palm oil and supplies 4. 2 MW electri-
cal power to the national grid and 3. 6 MW
thermal power to a palm oil refinery situ-
ated nearby.
