Variable flow through chiller evaporators is no longer heresy now that chiller controls can quickly adapt to changing operating conditions. Use an analysis tool to determine the economic viability of variable primary flow. When appropriate, offer it to building owners and operators as a value-added option in your system designs.

By Mick Schwedler, applications engineer, and Brenda Bradley, information designer, Trane. To comment on this article, send a note to Trane, Engineers Newsletter Editor, 3600 Pammel Creek Road, La Crosse WI 54601.

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