['Air Programs']

['Greenhouse Gases']

05/22/2023

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Air Programs - Greenhouse Gases

Table F–1 to Subpart F of Part 98—Slope and Overvoltage Coefficients for the Calculation of PFC Emissions From Aluminum Production

RegSense Greenhouse Gases CFR Regulations Environmental Protection Agency (EPA)Air Programs CFR Section English Focus Area USA

Technology	CF₄ slope coefficient [(kg CF₄/metric ton Al)/ AE-Mins/cell-day)]	CF₄ overvoltage coefficient [(kg CF₄/metric ton Al)/ (mV)]	Weight fraction C₂F₆/CF₄ [(kg C₂F₆/kg CF₄)]
Center Worked Prebake (CWPB)	0.143	1.16	0.121
Side Worked Prebake (SWPB)	0.272	3.65	0.252
Vertical Stud Søderberg (VSS)	0.092	NA	0.053
Horizontal Stud Søderberg (HSS)	0.099	NA	0.085

[74 FR 56417 Oct. 30, 2009; 75 FR 79156 Dec. 17, 2010]

['Air Programs']

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