Condenser-water temperature savings rule calculator

A screening approximation associates a 1 Δ°F condenser-water reduction with 3% less electricity; verify equipment limits and measured performance.

Units

f_{\text{electric,saved}} = 0.03 \times {\Delta T_{\text{cw}}}

Calculator

Enter the values you know and leave one box empty. Calculate finds the empty one, the result or any input.

Given

f_{\text{electric,saved}} = 0.03 \times 3 = 0.09

Symbol	Meaning	Unit
$f_{\text{electric,saved}}$	approximate fractional chiller electricity reduction	fraction
${\Delta T_{\text{cw}}}$	condenser-water temperature reduction in Fahrenheit degrees	°F

Symbol	Meaning	Unit
$f_{\text{electric,saved}}$	approximate fractional chiller electricity reduction	fraction
${\Delta T_{\text{cw}}}$	condenser-water temperature reduction within Fahrenheit degrees	K

Results are estimates for study and screening. Check the inputs, units and assumptions before you use them for design, billing or contract decisions.