Airedale TurboChill FreeCool 200kW - 1830kW - Manual (Page 18)

18
Introduction
Chiller Technical Manual 7525355 V1.1.0_04_2013
Chillers TurboChill™ Air Cooled and FreeCool
Turbocor Compressor
Turbocor centrifugal compressor supplied with as standard:
•
Suction and discharge shut off valves
• Discharge non-return valve
• Line reactor (for removing additional impedance harmonics and voltage
spikes in the ac waveform)
• EMI/EMC filter and comprising of:
o AC-DC rectifier
o DC capacitors
o DC-AC (IGBT) converter
o Motor/bearing management system and incorporated surge
protection
o Soft start module
o Magnetic bearing system
o The compressors are mounted on Turbocor specially designed
vibration reducing isolating rubber mounts
o Linear capacity modulation is provided by a variable frequency
drive
Key benefits of Turbocor compressor technology:
•
Oil Free Operation
• More efficient use of heat exchangers
• No oil entrainment issues – pipe work can be optimised for
performance not oil return
• Variable speed operation offering exact capacity match and optimum
part load performance
• Magnetic bearing system constantly optimises shaft / impeller
position
•
Small and light, only 120kg or 132kg (compressor size dependant)
• No mechanical contact, very quiet operation
• Very low start current, only 2A
• The intelligent, self optimising compressor offers near silent, oil free
operation and ultra efficient variable speed control
• Turbocor compressor shaft and impellers levitate on a magnetic
cushion eliminating friction and vibration resulting in the compressor
running at a smooth and reduced sound spectrum
• The TurboChill compressor’s variable speed control offers 2 major
benefits:
o Uses substantially less power at part load and gives accurate
set-point control and exact capacity match
o The inbuilt electronic soft start produces a very low starting
current of just 2A and eradicates the need to oversize
electrical supply components on site