Annual steam-leak cost calculator

Value leak mass with consistent steam energy, hours and tariff units.

Units

C_{\text{year}} = \frac{\dot{m}_{\text{leak}} \times \Delta h \times H \times r_{\text{MMBtu}}}{1{,}000{,}000}

Calculator

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

Given

C_{\text{year}} = \frac{72 \times 1010 \times 6200 \times 10.8}{1{,}000{,}000} \approx 4{,}869

Symbol	Meaning	Unit
$C_{\text{year}}$	annual steam-energy cost	$/year
$\dot{m}_{\text{leak}}$	steam loss	lb/h
$\Delta h$	valued steam enthalpy above return/reference state	Btu/lb
$H$	annual leaking hours	h/year
$r_{\text{MMBtu}}$	steam cost per million Btu	$/MMBtu

Symbol	Meaning	Unit
$C_{\text{year}}$	annual steam-energy cost	$/year
$\dot{m}_{\text{leak}}$	steam loss	kg/h
$\Delta h$	valued steam enthalpy above return/reference state	kJ/kg
$H$	annual leaking hours	h/year
$r_{\text{GJ}}$	steam cost per gigajoule	$/GJ

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