Dual compressor brings less noise, lower costs to high-rise
The noise level from the old chiller had become unacceptable. But energy efficiency and redundancy were also top of the list, and at first he assumed he could only achieve these somewhat diverse requirements by installing two chillers, with one primarily for backup in case the other failed.
Working with representatives of McGuire Engineering and Thermosystems, two Chicago firms, Herring learned that one McQuay(r) dual compressor water-cooled chiller would provide the low-load operation and redundancy he required. And now, after two cooling seasons, the 575-ton, dual centrifugal chiller has exceeded the 30% savings on electric usage estimated by the engineering firms.