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VFD retrofit onto chiller

VFD retrofit onto chiller

VFD retrofit onto chiller

(OP)
Has anyone retrofited a VFD onto an existing 700 ton chiller?  We are looking to make our building more energy efficient and the chill water system has the greatest load.  Thanks.

RE: VFD retrofit onto chiller

I did some cursory research into this during a study for replacing (not rebuilding) a 600-ton chiller.  Trane felt that a VFD was overkill because the vanes in the compressor inlet varied the load enough to reduce operating costs.  Trane does not offer the VFD option. However, York claimed a very good payback using a VFD (they do offer the option).  York's calculated payback was impressive.  However, as I remember, the extra cost was significant.

I'm writing this at home.  If you're interested, I can look at my notes at work.  My work email is jhh@eeiteam.com.

Leatherneck (Jim Huebener)

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