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08-15-2012, 04:29 AM #1
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replacing the air cooled to centrifugal chiller.
Dears,
We are planning to withdraw our 14 year old TRANE RTAA chiller 456 ton capacity (2 No chiller, each 228 ton total 456 ton,unit model RTAA 328) and replace with either same like air cooled chiller or new water cooled centrifugal chiller. We are advised by Mitsubishi to install ETI series 450 ton centrifugal chiller and the water cooled system shall have a power consumption of 0.8 KW against 1.6 KW the existing trane chiller. The additional investment of water cooled system can cover and pay back within 2.3 year by analyzing the local electrical and water cost. I would be interesting your valuable opinions,
1. Is better to replace same brand air cooled chiller
2. Comparison the centrifugal chillers of trane vs York vs Mitsubishi vs carrier.
Regards
Moideen-dubai
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08-15-2012, 09:50 AM #2
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my two cents, factor in chemical treatment and PM maintenance on all equipment to support this. But the pay back on either one is good.
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08-15-2012, 12:32 PM #3
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Water treament will be a major focus. If preventative maintenance is an issue go air cooled. Much easier to clean coils then brush out condenser barrels.
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08-15-2012, 01:22 PM #4
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That's a matter of opinion.
Originally Posted by jdblack
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08-15-2012, 01:44 PM #5
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X2 Originally Posted by Nuclrchiller
That's a matter of opinion.
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08-15-2012, 01:55 PM #6
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X3 Originally Posted by Nuclrchiller
That's a matter of opinion.
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08-15-2012, 01:58 PM #7
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Cost to go watercooled from aircooled is a big expense... Tower, pumps, building etc. me personally would put in a couple Rtac's and never skip a beat
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08-15-2012, 01:58 PM #8
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moideen- One other thing to think about you could cut down on your maint. cost by using a McQuay WMC. There is no oil and KW/ ton is a lot better then .80, something to think about. -GEO
Of all the things I have lost in my life, I miss my mind the most-GEO
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08-15-2012, 02:10 PM #9
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I think he's referring to total system kW. A York YK with VSD will do a whole lot better than .8 kW/ton as well. I think one of the problems with a Turbocor compressor in Dubai is the likelihood that it would run a full load more than it may here in the States. Turbocor compressors don't perform as well at full load as many of their competitors. Originally Posted by ga1279
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08-15-2012, 04:07 PM #10
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Okay let me rephrase --- not easier as much as less skilled labor needed Originally Posted by Nuclrchiller
That's a matter of opinion.
Hows that
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08-15-2012, 06:30 PM #11
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Pokin fun here but it doesnt take a genius to punch tubes. Originally Posted by jdblack
Okay let me rephrase --- not easier as much as less skilled labor needed
Hows that
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08-15-2012, 06:50 PM #12
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it is hard to clean tubes wrong...it is very easy to clean a condenser coil wrong and screw the whole thing up... Originally Posted by Southern Mech
what are we up to now? X6?The weak aren't destroyed by the strong.
The weak are destroyed by the under-estimated.
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08-15-2012, 09:38 PM #13
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You guys just love to argue. Evidently youve never seen someone try to beat a bore brush through a tube and bust it. You think its easy because you have a tube machine and skills. Take a half wit with an adjustable and some rods and brushes and have at it. Good luck Originally Posted by jayguy
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