This chiller, it looks like it is an aircooled chiller.
How does it compress the refrigerent? It does not make the typical chiller sound I am used to hearing, much quieter.
How old is it, and how many tons? Should I be budgeting for replacement and if so, what is a good option?
It is unusual for me to see a chiller at a small, 8,000 sf building, which unfortunately, is a reheat system, very high utility bills, but I have not figured out any way to convert it to a better system.
It's 25 tons, I believe It's manufactured in 1993 if I'm reading the serial number correctly, nice unit, I work on a lot similar but the 15 ton capacity.
This chiller, it looks like it is an aircooled chiller.
How does it compress the refrigerent? It does not make the typical chiller sound I am used to hearing, much quieter.
How old is it, and how many tons? Should I be budgeting for replacement and if so, what is a good option?
It is unusual for me to see a chiller at a small, 8,000 sf building, which unfortunately, is a reheat system, very high utility bills, but I have not figured out any way to convert it to a better system.
Thanks everyone for being so helpful.
Not small chiller for that building. It can take care of fresh air.
As for re-heat strategy was the old school when electricity was dirt cheap. Today, it is illigal to engineer that. As for this building, It will requires better strategies and DDC logics to reduce the elctric bills. The owner would never understand the up-front cost and the saving in the long run.
It is a little over 20 tons (024 = 20tons) and was made the 45th week of 1993. It should be a standard Carlyle cast iron compressor with one or two unloaders, most likely suction cut-off unloading.
A Carlyle semi-hermetic is more quiet than a 19XR centrifugal with no sound kit!
I don't think that you are going to find a 20-25 ton centrifugal chiller. :-) The compressor is enclosed in a cabinet and they are usually quiet enough. Good chillers for the most part as long as you have enough water and a load on them. The one in this post is probably showing its age.
I don't think that you are going to find a 20-25 ton centrifugal chiller. :-) The compressor is enclosed in a cabinet and they are usually quiet enough. Good chillers for the most part as long as you have enough water and a load on them. The one in this post is probably showing its age.
...Ron
True on the tonnage aspect. But if you put up a rack of Carlyle 06E's (as many higher tonnage recip chillers have) against a screaming 19XR in a loudness contest, I think the high pressure centrifugal would still win. The 06E's purr in comparision to that ear drum shattering squeal.
OTOH a large tonnage recip chiller (one or two large compressors) can crank out some sound.
Electricity makes refrigeration happen.
Refrigeration makes the HVAC psychrometric process happen.
HVAC pyschrometrics is what makes indoor human comfort happen...IF the ducts AND the building envelope cooperate.
A building is NOT beautiful unless it is also comfortable.
My church has 2 condensing units behind the parish hall. One looks like the chiller pictured except DX, the other is a notch smaller, maybe a 15 ton. When they are on, between the Carlyles and the fans, you can hear them for a block. The big boy for the sanctuary is behind a stone wall 15' high. 1 Carlyle on isn't too bad and fortunately that usually does it. But both on, walking across the courtyard you sure hear them. But then I can remember hearing one centrifugal in the past. Don't recall if Trane or Carrier. Had a loud whine seems to me.
Reply With Quote
Originally Posted by Maikerum
