Variable flow vs. Constant flow through centrifugal chillers
Variable flow vs. Constant flow through centrifugal chillers
(OP)
I need some opinions on variable flow vs. constant flow through centrifugal chillers. Trane says they can do it, York prefers not to. The Tranes would use R123 and the Yorks would use R134A. Our hydraulic analysis says that variable flow will work, however, we are developing some conflict as we get closer to construction.





RE: Variable flow vs. Constant flow through centrifugal chillers
We have done a varable flow job and found that we cound only vary the flow 25% and keep the chillers on-line. It was hardly worth the design time for variable flow.
R123 is a better refrigerant for variable flow but the market in moving toward R134a.
RE: Variable flow vs. Constant flow through centrifugal chillers
Are you referring to variable refrigerant flow or variable flow of chill water through the evaporator or variable flow of cooling water through the condenser. I am working on a system that reduces overall electrical power requirements by reducing the water flow to the condenser and am interested in finding some other views on the matter.
RE: Variable flow vs. Constant flow through centrifugal chillers
RE: Variable flow vs. Constant flow through centrifugal chillers