Water-tank sensible capacity calculator

Water mass and useful temperature difference determine sensible capacity; mixing reduces useful ΔT.

Units

E = 8.34 \times V \times \mathit{dT}

Calculator

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

Given

E = 8.34 \times 5000 \times 16 = 667{,}200

Symbol	Meaning	Unit
$E$	sensible stored energy	Btu
$V$	usable water volume	gal
$\mathit{dT}$	usable temperature difference	Δ°F

Symbol	Meaning	Unit
$E$	sensible stored energy	kJ
$V$	usable water volume	L
$\mathit{dT}$	usable temperature difference	K

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