Sensible recovery effectiveness calculator

For the specified equal heat-capacity streams, compare achieved temperature rise with the maximum inlet difference.

Units

\varepsilon = \frac{T_{\text{out}} - T_{\text{in}}}{T_{\text{hot}} - T_{\text{in}}} \times 100

Calculator

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

Given

\varepsilon = \frac{65 - 25}{75 - 25} \times 100 = 80

Symbol	Meaning	Unit
$\varepsilon$	sensible recovery effectiveness on equal-capacity basis	%
$T_{\text{out}}$	cold stream outlet temperature	°F
$T_{\text{in}}$	cold stream inlet temperature	°F
$T_{\text{hot}}$	hot stream inlet temperature	°F

Symbol	Meaning	Unit
$\varepsilon$	sensible recovery effectiveness on equal-capacity basis	%
$T_{\text{out}}$	cold stream outlet temperature	°C
$T_{\text{in}}$	cold stream inlet temperature	°C
$T_{\text{hot}}$	hot stream inlet temperature	°C

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