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Pneumatic controllers / pumps

Pneumatic Devices

Device count and bleed rate by type, converted from natural gas volume to pollutant mass.

Input assumptions

Activity data
count
count
count
lb/lb-mol

From a representative gas analysis.

%

Weight percent of the selected pollutant (e.g. VOC, CH4) in the gas.

scf/lb-mol

Use the value for the standard temperature and pressure your program or method specifies.

hr/yr

8,760 hr/yr for potential to emit unless an enforceable limit applies.

%

Only claim control you can document and enforce.

Emission factor

Bleed rates come from manufacturer specifications, measurement, or the per-device rates in the reporting protocol you follow. Cite each source.

scf/hr/device
scf/hr/device
scf/hr/device

Calculation result

Enter high-bleed devices, low-bleed devices, intermittent devices, … to see results, or fill demo values to explore.

Calculation methodology

Count-times-bleed-rate method by device type, summed, then converted from gas volume to pollutant mass with the gas composition.

E (lb/hr) = Σ [Nᵢ × Bᵢ (scf/hr/device)] ÷ MV × MW × w
Emission factor
High-bleed rate: — scf/hr/deviceLow-bleed rate: — scf/hr/deviceIntermittent rate: — scf/hr/device
Source / reference
Not provided. Results without a cited factor are not defensible.

Calculation set

Add several sources or pollutants and total them. Stored in this browser tab only until accounts launch.

No calculations added yet.

Native Excel and PDF exports with full methodology arrive with saved accounts. Phase 2

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