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In 1972, it was revised and issued as the second edition by the US Environmental Protection Agency EPA. In 1985, the subsequent fourth edition was split into two volumes: Volume I has since included stationary point and area source emission factors , and Volume II includes mobile source emission factors.
For example, such a regulation might limit the concentration of NOx to 55 ppmv in a dry combustion exhaust gas corrected to 3 volume percent O 2. As another example, a regulation might limit the concentration of particulate matter to 0.1 grain per standard cubic foot (i.e., scf) of dry exhaust gas corrected to 12 volume percent CO 2.
One GGE of natural gas is 126.67 cubic feet (3.587 m 3) at standard conditions. This volume of natural gas has the same energy content as one US gallon of gasoline (based on lower heating values: 900 BTU/cu ft (9.3 kWh/m 3) of natural gas and 114,000 BTU/US gal (8.8 kWh/L) for gasoline). [22]
eGRID2019 was released by EPA on February 23, 2021. It contains year 2019 data. eGRID2018 was released by EPA on January 28, 2020 and eGRID2018v2 was released on March 9, 2020. It contains year 2018 data. eGRID2016 was released by EPA on February 15, 2018. It contains year 2016 data. eGRID2014 was released by EPA on January 13, 2017.
Where %O 2 is the percent O 2 by volume, dry basis, %CO 2 is the percent CO 2 by volume, dry basis, and 20.9 is the percent O 2 by volume in ambient air. The Fuel factor can be corrected for the amount of CO, by adding the percent CO on a dry basis to the CO 2, and subtracting half of the percent CO from the O 2. [2]
The EPA’s new carbon dioxide rules would require carbon capture or green hydrogen to reduce greenhouse gases at new natural gas plants. EPA wants power plant CO2 emissions cut to slow climate ...
Using EPA 2018 Fuel Economy Guides assumptions for national average pricing of $2.56/gal regular gasoline and $0.13/kWh [42] we can calculate a vehicle that is rated at 84 MPGe or 40 kW/100 Mi efficiency and has a 16.5 kW EV battery of which 13.5 kWh is usable for electric driving with an advertised range of 33 miles per charge.
An emission intensity (also carbon intensity or C.I.) is the emission rate of a given pollutant relative to the intensity of a specific activity, or an industrial production process; for example grams of carbon dioxide released per megajoule of energy produced, or the ratio of greenhouse gas emissions produced to gross domestic product (GDP).