estimate_method Namespace Reference

Compressed air leak estimation using visual and audible assessment. More...

Classes
struct	Input
	Input parameters for the estimate method compressed air leak calculation. More...
struct	Result
	Result of the estimate method leak annual consumption calculation. More...

Functions
Result	calculate (const Input &input)
	Estimates annual compressed air consumption from a leak using the estimate method.

Detailed Description

The estimate method provides a rapid field assessment of compressed air leak severity. An operator categorizes a leak by audible and visual clues (e.g., hissing sound, visible moisture or contamination) and assigns a corresponding estimated flow rate. That rate is then multiplied by annual operating time to yield the projected annual air loss. This approach trades precision for speed and is most appropriate for initial leak surveys, after which higher-accuracy methods such as the bag method or orifice method can be used for significant leaks.

See also

Estimate Method Calculator

Function Documentation

calculate()

Result estimate_method::calculate

(

const Input &

input

)

Annual consumption is the product of the estimated leak rate, annual operating time, and the minutes-per-hour conversion factor, then divided by the scf-to-kscf factor.

Annual Consumption:

\begin{equation}\label{eq:estimate-method-annual-consumption} C_{annual} = \frac{\dot{Q}_{leak} \cdot t_{op} \cdot 60}{1000} \end{equation}

where:

\(C_{annual}\)	Estimated annual air loss from the leak \([\unit{ \kscf}]\)
\(\dot{Q}_{leak}\)	Estimated compressed air leak flow rate \([\unit{ \scfm}]\)
\(t_{op}\)	Annual system operating time \([\unit{ \hour}]\)
\(60\)	Minutes per hour conversion \([\unit{ \minute\per\hour}]\)
\(1000\)	Standard cubic feet per kiloscf conversion \([\unit{ \unitless}]\)

Note

Leak rate estimate must be in scfm. Operating time must be in hours per year.

Parameters

[in]

input

Input

Returns

Result containing annual_consumption [kscf].