Page 78 - Industrial Plants 2014

Cycle (ORC) technology, have been built in the
geothermal field at Pamukören, a high potential
growth region for geothermal energy. This is the
first geothermal plant in Turkey equipped with
radial inflow turbines, two identical units with two
expanders each. This will also be by far the largest
binary cycle plant in the country. The radial turbine
design of Atlas Copco, the heart of the plant, is an
excellent match for the requirements of an ORC
based power plant. Being equipped with variable
inlet guide vanes that are ensuring that the angle of
attack of the flow on the leading edge of the rotor
blade of the turbine is kept correct, even if the flow
changes. (figure 2). This ensures a constant
turbine rotational speed and therefore constant
power production. Even in off-design conditions,
Fig. 2 – Atlas Copco has some 59 geothermal projects under efficiency and performance only decrease slightly.
turboexpander with development and 310 MW under construction. The consortium worked in synergy to guarantee a
variable inlet guide In this context, geothermal projects investments reliable and outstanding job, achieving the plant
vanes
are becoming an attractive option to replace fossil optimization and high performance, according to
fuels and Pamukören Geothermal contractual obligations. In 2013, the customer
The consortium worked Electric Power Project testifies this confirmed its satisfaction selecting the consortium
in synergy to guarantee a trend. for an additional 80 MW geothermal plant to be
reliable and outstanding Back in 2011, a consortium led by developed and executed in the next future.
job, achieving the plant the Gas and Process Division of
optimization and high the Swedish company Atlas
performance, according Copco and its partners process- Spig air cooled condenser
to contractual obligations. design expert exergy and air- techology
In 2013, the customer cooled condenser specialist Spig
confrmed its satisfaction won a geothermal contract for the Spig was chosen to design and supply the air
selecting the consortium construction of a binary geothermal cooled condenser serving the 45 MW geothermal
for an additional 80 MW power plant to be delivered in the binary plant project at Pamukören geothermal field
geothermal plant to be Aydin Province, Aegean Region of (figure 3), using ORC technology based on butane
developed and executed Turkey (figure 1). fluid. The condenser is composed of 28 bays with
in the next future The order from Celikler Jeotermal a total 56 fin tube bundles. Each bay includes 2
Elektrik Uretim A.S. of Turkey axial fans supplying cooling air to the bundles (two
includes two turbo expander generator trains bundles for each bay). The bays are arranged in
which is able to deliver 2 × 22,5 MW of clean two parallel units, each unit includes two sub-unit
energy. Pamukören 1 and 2, using Organic Rankine installed in parallel, each one include 7 bays with

Fig. 3 - Spig air
cooled condenser for
Pamukören
geothermal binary
plant project

IndustrIal Plants - May 2014
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