Page 94 - North American Clean Energy September October 2015

geothermal energy

Figure 2: AĶA
plant

POWER-SEAL PM/PH SERIES
High Performance Butterfly Valves

at their best

when things

Figure 3:
HEAT up!
2-pressure-level

binary plant
with the Radial
Outlow Turbine

.continued from page 93.

• Superior eiciency (up to 6%

additional eiciency over the axial

turbine);
• Better exploitation of high enthalpy

resources and suitable for low
temperature (as low as 90°C (194°F);

• Very cost efective in multiple pressure

plant;

• Less maintenance; and
• Extreme lexibility for changing

geothermal luid conditions (low,

temperatures, and constituents due to

a higher number of stages)

One of the most successful applications

• Thru-Shaft design

of the ROT technology in an ORC
system is the AĶA ENERJI geothermal
• Live loaded packing

binary plant in Denizli, southwest
• Temperatures to 900oF

Turkey. Recognizing the untapped

(1100o with Inconel Seat)
potential of its existing low enthalpy
• 150#/300# ANSI/ASME geothermal resources, AĶA ENERJI
in stock 2”-36”, with

turned to the cutting edge technology of
48” available
the Radial Outlow Turbine to produce

electricity to feed into the national grid.

The AĶA geothermal
binary plant

he AĶA plant is a low enthalpy geothermal binary plant (luid temperature at 105°C/220°F), generating a
power output up to 4 MW. he standout results achieved by this plant are accomplished by the two pressure
level Radial Outlow Turbine. his new turbine technology, with two pressure levels on a single expander,
allows for a superior plant performance producing up to 20% more power than using a single-pressure-level

system. he AĶA plant represents the world's irst binary plant equipped with a 2-pressure-level cycle on a
9955 International Boulevard single-disk turbine.
Cincinnati, Ohio 45246
he successful installation of this new coniguration will increase the feasibility of low-enthalpy 1-8 MW
(513) 247-5465
range plants down to 100°C (212°F) and open up new possibilities to exploit low enthalpy small resources
FAX (513) 247-5462
[email protected] more eiciently and economically than ever before. he performance tests conducted on this plant have
www.a-tcontrols.com
given extremely positive results indicating a very high turbine eiciency over 5% more than the guaranteed
igures provided to AĶA.

94
SEPTEMBER/OCTOBER 2015
nacleanenergy.com