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Vessel Quotas and Operating Requirements Vessel Quotas and ...

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Emission Rate Calculations<br />

Table D-1<br />

Marine Engine Emission Factor<br />

<strong>and</strong> Fuel Consumption Algorithms<br />

Emission rate (g/kW-hr) by fractional load<br />

Pollutants Exponent(x) Intercept(b) Coefficient(a) Pollutants 80% 40% 20% 10%<br />

PM 1.5 0.2551 0.0059 PM 0.26 0.28 0.32 0.44<br />

NOX 1.5 10.4496 0.1255 NOX 10.62 10.95 11.85 14.42<br />

NO2 1.5 15.5247 0.18865 NO2 15.79 16.27 17.63 21.49<br />

SO2 2.3735 High Sulfur SO2 11.25 11.25 11.25 11.25<br />

CO 1 0.8378 Low Sulfur SO3 1.69 1.69 1.69 1.69<br />

HC 1.5 0.0667 CO 1.05 2.09 4.19 8.38<br />

HC 0.09 0.26 0.75 2.11<br />

Fuel consumption g/kW-hr) 223.37 241.02 276.32 346.92<br />

All but SO2:<br />

Emission Rate (g/kW-hr) = a(Fractional Load) -x + b<br />

SO2:<br />

Conversion Factors for SO2<br />

Marine Grade Fuel<br />

Conversion Factors for SO2<br />

Low Sulfur Diesel Fuel<br />

Emission Rate(g/kW-hr) = a(Fuel Sulfur Flow in g/kW-hr) + b lbs sulfur/lb fuel (1.5%) 0.020 lbs sulfur/lb fuel (0.2%) 0.003<br />

(Sulfur Flow in g/kW-hr = 0.71 fuel wieght 7.1 lbs/gal<br />

fuel wieght 7.1 lbs/gal<br />

(Sulfur Flow in g/kW-hr = 4.74 0.39 lbs fuel/hp-hr 0.39 0.39 lbs fuel/hp-hr 0.39<br />

Fuel Consumption (g/kW-hr) = 14.12/(Fractional Load) + 205.717 1 kW=1.34 hp 1.34 1 kW=1.34 hp<br />

1.34<br />

1 lb = 453.59 g 453.6 1 lb = 453.59 g 453.59<br />

Source: Energy <strong>and</strong> Environmental Analysis, EPA420-00-002, Analysis of Commercial Marine <strong>Vessel</strong>s Emission <strong>and</strong> Fuel Consumption Data , Final Report, Feb 2000

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