Chiller Selection
Chiller Selection
(OP)
If i have 600 ton load and i want to select a chiller, how should i proceed?
How many chillers will be ideal to cater this load??
How many chillers will be ideal to cater this load??
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RE: Chiller Selection
What type of building? Are you limited by space?
Water-Cooled, or Air-Cooled?
RE: Chiller Selection
RE: Chiller Selection
Suggest you contact your local York, Trane, Carrier representatives and get them to provide you various selections.
RE: Chiller Selection
Two 300ton chillers will probably be a better base option, and serve the full building load without needing the lower efficiency pony chiller mentioned above.
What you do from here entirely depends on the class of office building, low load and time spent at reduced load, which relates to climate and patterns of use:
* VFD's are becoming very affordable and almost de rigour(outside of the tropics, where you may not have sufficient wet bulb suppression to make them worthwhile).
* Long periods of low load operation may necessitate a smaller pony chiller, and the size of this will come from your load trends for the whole cooling season, otherwise you might get away with the turndown/Hot Gas Bypass on your base chillers.
* Some applications - occupant requirements or long cooling season for example - may make a third redundant 300ton chiller worthwhile.
RE: Chiller Selection
RE: Chiller Selection
I think this is not so simple a question as the OP believes. This is why engineers charge good money for a design.
RE: Chiller Selection
600t may be the theoretical max load, but in real world operation the plant will run very rarely at full load.
RE: Chiller Selection
Simple mathematics would tell you - use 2 x 300TR or 3 x 200TR !
HVAC68
RE: Chiller Selection
RE: Chiller Selection
HVAC68 is hitting the point when he(she) refers to load profile. I have found that spot cooling in a number of critical areas are more common and not so easily answered by a low load chiller. Areas like fire alarm system panels have batteries that tend to overheat if not properly cooled, pharmacies, conference rooms, telecom closets with router switches...you get the picture. All with different needs, different areas, ect. You really need to look at the load profile in the big picture.
RE: Chiller Selection
RE: Chiller Selection
if this is the building load, then first determine the plant load, calculate the diversity on so on.
then do the same procedure