POWER June 2013 - 27

COMBUSTION TURBINES
4. ARCTIC equipment. The ARCTIC system is packaged onto a single skid to enable
quick field installation and ease of interconnection with the LM6000 PC SPRINT. Courtesy:
Energy Concepts Co.
The ARCTIC is delivered as a skidded
unit (Figure 4). For utility applications, the
standard skid sizes are 2,000 tons and 3,000
tons of inlet chilling. For smaller turbines
(less than 20 MW) a range of skid sizes is
available, from 100 to 1,000 tons.
The ARCTIC system has a small cost
premium relative to a mechanical chiller of
the same capacity. However, when all the
auxiliary functions are credited (anti-icing,
tempering air, less switchgear), the overall
installed cost is essentially the same. The
system's big plus is the increased cold- and
hot-weather performance, improved operating
efficiency, and reduced maintenance
relative to a plant using a mechanical chiller
for inlet cooling, all obtained at no additional
cost. ■
-Donald C. Erickson (enerconcep@aol.
com) is president and Ellen E. Makar is
frequent, rapid power cycling from minimum
to maximum output. In one notable episode,
temperatures in central Texas dropped to a record-setting
11F. Several large power plants
were knocked offline, causing critical power
supply shortages. The ARCTIC LM6000
operated for 62 continuous hours until the
emergency passed.
the project's engineer for Energy Concepts
Co., the ammonia absorption refrigeration
technology supplier. The authors wish
to acknowledge the other members of
the team that developed the utility-scale
ARCTIC: Kiewit Power Engineers' Chris
Mieckowski, responsible for project implementation,
and Nooter/Eriksen, supplier of
the heat recovery vapor generator.
circle 16 on reader service card
June 2013 | POWER
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POWER June 2013

Table of Contents for the Digital Edition of POWER June 2013

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