What does AP 42 stand for?

What does AP 42 stand for?

Compilation of Air Pollutant Emissions Factors
Compilation of Air Pollutant Emissions Factors (AP-42) AP-42, Compilation of Air Pollutant Emissions Factors, has been published since 1972 as the primary compilation of EPA’s emissions factor information. It contains emissions factors and process information for more than 200 air pollution source categories.

How much NOx does natural gas produce?

Some of the highest-polluting natural gas power plants emit over 100 tons of NOx per year, which is roughly equivalent to the NOx emissions from traveling 11 million miles (assuming an emissions rate of 8.18 grams of NOx per mile) in a diesel school bus, one of the most-polluting types of vehicles.

Does natural gas produce particulate matter?

Natural gas, believed to be among the cleanest forms of fuel, does emit ultrafine airborne particulate matter when burned in home appliances such as stove tops and water heaters.

How is CO2 emission factor calculated?

Carbon dioxide emissions per barrel of crude oil are determined by multiplying heat content times the carbon coefficient times the fraction oxidized times the ratio of the molecular weight of carbon dioxide to that of carbon (44/12).

Is CNG cleaner than diesel?

CNG passenger vehicles emit 5-10% less CO2 than comparable gasoline powered passenger vehicles. Generally, there is no benefit over diesel powered cars in terms of CO2 emission reduction. However, the NOx and soot emissions of CNG powered vehicles are substantially lower than from diesel powered vehicles.

What is the cleanest burning fossil fuel?

natural gas
In terms of emissions from power plant sources, natural gas is the cleanest fossil fuel. Using data collected from the Energy Information Administration (EIA) division of the Department of Energy (DOE), the emissions of several stack gasses are compared for natural gas, oil, and coal.

How do I calculate emission factor?

The general equation for emission estimation is: E = A x EF x (1-ER/100) where: E = emissions, A = activity rate, EF = emission factor, and ER = overall emission reduction efficiency, %.

How do you calculate gas emissions?

Calculate the emission rate by using this method: Mass Emission rate (lb/hr) = Emission factor (lb/unit) x capacity (unit/hr)

Is there an emission factor documentation for AP-42 for natural gas engines?

Appendix A Source Tests Reports Information – Emission Factor Documentation for AP-42 Section 3.2 Natural Gas-fired Reciprocating Engines – MS Access Version (zip) (ZIP 1M) Due to the size of the database, a printout of all test data used to generate the engine emission factors in Section 3.2 is not presented in the background report.

What is apgap-42?

AP-42, Compilation of Air Pollutant Emissions Factors, has been published since 1972 as the primary compilation of EPA’s emissions factor information. It contains emissions factors and process information for more than 200 air pollution source categories. A source category is a specific industry sector or group of similar emitting sources.

What is the primary purpose of AP-42?

Response: The primary purpose of AP-42 is to provide emission factors for emission inventories. The EPA provides emission factors for as many sources and as many pollutants as available resources allow.

What does apap-42 stand for?

AP-42, Compilation of Air Pollutant Emission Factors, has been published since 1972 as the primary compilation of EPA’s emission factor information.

What is EPA emissions?

Emissions standards set limits on the amount of pollution a vehicle or engine can emit. EPA realizes that to reduce mobile source pollution we must address not only vehicles, engines, and equipment, but also the fuels they use. So we have set sulfur standards for gasoline, on-road diesel fuel, and nonroad diesel fuel.

What is the emission factor for diesel fuel?

2 Fuel-Specific Greenhouse Gas Emission Factors

What is a Tier 4 emissions?

Currently, Tier 4 diesel engine standards are the strictest EPA emissions requirement for off-highway diesel engines. This requirement regulates the amount of particulate matter (PM), or black soot, and nitrogen oxides (NOx) that can be emitted from an off-highway diesel engine.

What is default emission factor?

The ‘CoM Default Emission Factors’ collection consists of emission factors and coefficients provided to the Covenant of Mayors inititiave for the calculation of local Greenhouse Gas (GHG) emission inventories (in CO2 and CO2 equivalent), using standard (e.g. based on IPCC factors) or LCA (Life cycle assessment) …

How much CO2 is in a litre of diesel?

2.7 kg
Diesel engines produce 2.7 kg of CO2 per litre of diesel fuel consumed.

Is PM10 a criteria pollutant?

Criteria air pollutants are air pollutants for which acceptable levels of exposure can be determined and for which an ambient air quality standard has been set. Examples include: ozone, carbon monoxide, nitrogen dioxide, sulfur dioxide, and PM10 and PM2. 5.

How do you calculate CO2 emissions per km?

In order to combust this carbon to CO2, 1939 grammes of oxygen is needed. The sum is then 727 + 1939 = 2666 grammes of CO2/kg of H-gas. An average consumption of 4,2 kg / 100 km then corresponds to 4,2 kg x 2666 g/kg = 112 g of CO2/km.

How are the emission factors in AP-42 compiled?

The emission factors have been developed and compiled from source test data, material balance studies, and engineering estimates. The Fifth Edition of AP-42 was published in January 1995. Since then EPA has published supplements and updates to the fifteen chapters available in Volume I, Stationary Point and Area Sources.