Chiller power consumption
Chiller power consumption
(OP)
Anyone is familiar with chillers power consumption?
I see in a technical data sheet that a 155 tons air-cooled chiller made by Trane requires a 310 amps disconnect switch (@575V).
But I saw elsewhere on the net that "One ton of cooling is the amount of heat absorbed by one ton of ice melting in one day: 12,000 Btu/h or 3.516 thermal kilowatts (kW)."
So I would suppose that the 155 tons chiller uses 550 kW of power. That would mean more than 500 amps @ 575V, which is a little over the 310 amps requirement... Where is my mistake?
I see in a technical data sheet that a 155 tons air-cooled chiller made by Trane requires a 310 amps disconnect switch (@575V).
But I saw elsewhere on the net that "One ton of cooling is the amount of heat absorbed by one ton of ice melting in one day: 12,000 Btu/h or 3.516 thermal kilowatts (kW)."
So I would suppose that the 155 tons chiller uses 550 kW of power. That would mean more than 500 amps @ 575V, which is a little over the 310 amps requirement... Where is my mistake?






RE: Chiller power consumption
RE: Chiller power consumption
You need the COP - Coefficient Of Performance, for a better approximation. They often range from 1.7 to 3.5 or there-abouts. This is the efficiency at which the system "moves heat". This means your Power estimate would be divided by the COP. A lot lower!
Keith Cress
Flamin Systems, Inc.- <http://www.flaminsystems.com>