Grashof steam-leak estimate calculator

The reference applies a 0.70 coefficient to its steam-leak estimate.

Units

\dot{m}_{\text{leak}} = C_{d} \times 0.0165 \times 3600 \times A \times P_{\text{abs}}^{0.97}

Calculator

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

Given

\dot{m}_{\text{leak}} = 0.7 \times 0.0165 \times 3600 \times 0.022 \times {96}^{0.97} \approx 76.579

Symbol	Meaning	Unit
$\dot{m}_{\text{leak}}$	estimated steam loss	lb/h
$C_{d}$	discharge coefficient; 1 for the ideal round orifice	—
$A$	leak opening area	in²
$P_{\text{abs}}$	upstream absolute pressure	psia

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