Original message
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 |  "SMARDT oil-free chillers"
, posted Fri 18 May 12:35  
Has anyone have any know of these unit? I have replace a couple of chiller and the archtect has spec.ed SMARDT oil-free centrifigal chillers.
Now this is a 150 chiller to the tune of a million dollars project and I'm a bit uneasy spend that kind of money on new fangled stuff.
I'm told that the crank/rotor rides on an electical magnetic bearing surface, therefore it required no oil.
I guess it is a McQuay design that they are now allowing other manufactory to purchase form them.
does anyone have any of this equipment on site?
or have you worked on it?
if you can help thanks, if not thanks anyway
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Replies:
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| JacksonBall
| "Re(1):SMARDT oil-free chillers" , posted Fri 23 May 06:29
Hi, I am Jackson Ball. I head up the Business Development for Smardt. The Turbocor technology was invented by Ron Conry, Roger Richmond-Smith, our CEO, and Philip Kennedy engineered their software and is our controls engineer. Many of our core people came from Turbocor. McQuay is only an OEM of the technology, buying the compressors from Danfoss, like us. Smardt has more than 3 times the number of installations than McQuay worldwide. We build air cooled chillers from 60-250 tons and water cooled chillers from 60-900 tons. We are by far the most experienced in the world in this arena.
Your 150 ton system would be two 90 ton compressors on one circuit and will deliver about .37 kW/ton. In addition to the energy savings, your customer will never have any oil service, will never have any bearing inspections of rebuilds, will never have the 8-15% effect of oil on the heat exchanger surface and have the lowest total cost of ownership.
There are two types of controllers, one that can control the chiller and compressor staging using power relationships, not percent of demand (very advanced method) and the other can control the entire plant, including tower fans, condenser pumps, chilled water pumps. Both system can do real-time condenser relief, meaning we look at chiller heat pressure, and calculate enthalpy in real-time, then control the remote tower fan and condenser pump to drive down head pressure while avoiding operating conditions that would be inefficient or detrimental. Depending on conditions, we can operate with condenser water as low as 50F.
I have included several links below for your reference. Feel free to call me with details of your needs. Where is your project?
Best regards...
Jackson
Smardt General Brochure
http://interactions.smardt.com/Docs/Smardt_GeneralBrochure.pdf
Smardt General PowerPoint Presentation
http://interactions.smardt.com/Docs/Presentation_Smardt1.ppt
Turbocor Powerpoint Presentation Dan Mason
http://interactions.smardt.com/Docs/DTC_Presentation_Mason.ppt
Case Study - University Medical Center
http://interactions.smardt.com/Docs/CaseStudy_UniversityMedicalCenter.pdf
CPECS Features
http://interactions.smardt.com/Docs/CPECSFeatures.pdf
Jackson Ball
Advanced Heat Transfer
Equipment and Technologies
(678)234-2821
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| shortys
| "Re(1):SMARDT oil-free chillers" , posted Sat 19 May 21:26
This compressor (Called Turbocor by Danfoss) is starting to be used on a regular basis. It has an inverter drive built in and the motor does run with the shaft suspended in magnetic bearings. The inrush amps for startup is around 2 amps. The capacity is controlled by changing the hertz. I believe the compressor turns around 24,000 rpm. A 130 ton compressor complete weighs around 270lbs.
"Best prices online on Carrier parts and IAQ products!" shortyshvac.com
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