AAON INC. NATIONAL SALES MEETING INTRODUCING TURBOCOR

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website -- www.turbocor.com
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Advantages of the Turbocor centrifugal compressor
The Turbocor compressor utilizes a two stage,
direct drive, hermetic centrifugal design.
Centrifugal compressors offer some very
significant advantages as compared to positive
displacement compressors (such as reciprocating,
scroll, or screw machines). Lets examine some
of these advantages.
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Turbocor Advantages

• FULL LOAD EFFICIENCY
• Full load efficiency is equivalent to todays
  best screw compressors.

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Turbocor Advantages

• PART LOAD EFFICIENCY
• Coupled with a Variable Frequency Drive (VFD,
  standard with Turbocor) the compressors part
  load efficiency is the highest available.
• This is an intrinsic characteristic of
  centrifugals and can save a third on compressor
  energy costs annually as compared to other types
  of compressors. Turbocor further improves
  efficiency with its oil-free design (more on that
  later).

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• 33 better operating efficiencies, especially at
  part load.

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Turbocor Advantages

• VARIABLE UNLOADING
• Infinitely variable unloading can be delivered
  from the full 100 capacity down to typically 20
  of load. The compressors integrated variable
  frequency drive provides unmatched flexibility
  for off-peak operation. Also, inlet guide vanes
  (IGV) provide stable operation at light loads or
  high head conditions, further improving
  Turbocors unloading capability. The specific
  amount of unloading should be checked for each
  selection.
• The compressors microprocessor controls the
  speed and IGV to deliver the right capacity and
  automatically prevent surge.

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Turbocor Advantages

• HIGH RELIABILITY
• With only one major moving part (the
  shaft/impeller assembly), extreme mechanical
  simplicity translates to very high reliability.
  There are no gear sets, multiple pistons, slide
  valve assemblies, mechanical bearings or seals
  that are the primary causes of compressor
  failure.
• Hundreds of units operating in the field with,
  collectively, over 250,000 hours of operation.
  98.5 uptime.

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Turbocor Advantages

• QUIET OPERATION
• Best in Class low sound and vibration levels
  set these compressors apart from all other
  compressor technologies. Tested at 71 dBA (sound
  pressure at 1 meter) without any sound attention.
  Screw compressors, by comparison, are
  approximately 80 dBA or higher. Consider that
  for every 3 dB reduction, the sound level is cut
  by 50.
• Vibration is essentially non-existent. You can
  rest a nickel on edge on the suction line
  connection during compressor operation, from
  startup to shutdown!

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Turbocor Advantages

• TRUE SOFT START
• The standard Turbocor compressor requires very
  low starting current, drawing less than 2 amps
  when first energized (the power required to
  enable the magnetic bearings before the VFD ramps
  up the compressor speed to meet conditions).
  This totally redefines soft start. Turbocor
  compressors do not draw more than full load amps
  where positive displacement compressors, with
  cross the line starters, will frequently draw
  locked rotor amps (LRA) that are five to six
  times full load amps on startup.

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Turbocor Advantages

• COMPACT, LIGHTWEIGHT DESIGN
• The standard compressor is weighs only 265 lbs
  for capacities approaching 90 tons and frequently
  takes only half the space of other compressors.
  The light weight and small size frequently afford
  original equipment manufacturers savings in the
  size and cost of their products.
• Choosing to substitute the Turbocor for heavier,
  more bulky compressors dramatically reduce the
  costs necessary for installation or service of
  retrofit applications.

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TT300 Size Comparison90 ton -v- 25 ton
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TT300 Comparison75 ton -v- 75 ton
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Turbocor Advantages

• OIL FREE FRICTIONLESS DESIGN
• Turbocor utilizes magnetic bearings and labyrinth
  seals that eliminate the need for oil. Most
  compressor failures ca be attributed to improper
  lubrication due to inadequate oil return and the
  resulting mechanical wear and tear. Pipe design
  becomes a function of cost and pressure drop, and
  not for refrigerant velocities at part load
  necessary for the movement of oil. A huge
  benefit.
• Furthermore, the absence of oil eliminates an
  insulating oil film that diminishes heat transfer
  effectiveness.
• And maintenance costs, larger pertaining to oil,
  can be reduced by up to 50.

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Piping Complexity
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C O M P L E X I T Y
P I P I N G
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Turbocor Advantages

• CONTROLS
• The Turbocor compressor includes an integrated
  microprocessor that compactly controls compressor
  speed and bearing function, provides monitoring
  capability to assist commissioning, provide
  energy outputs, and show fault codes, and is even
  able to control external electric expansion
  valves and load balancing valves, and chiller
  function.

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Control Comparison
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Turbocor Cost
Apples to apples, Turbocor is competitive with
the leading screw compressors. With the energy
advantages paybacks, if a premium first cost
exists, are typically 1 to 3 years depending on
usage and utility rates as the following example
illustrates.
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Payback Period in Years
10
9
8
/kWh
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6
5
3000
2500
1000
1500
2000
Equivalent Full Load Hours
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Customer Mark Platt

• President, Multistack
• TurboStack

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Multistack Example 2 University
Plaza Hackensack, New Jersey - USA
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Question Answer