You must use the procedures and test methods in this section to determine the add-on control device emission destruction or removal efficiency as part of the performance test required by § 63.4760 . You must conduct three test runs as specified in § 63.7(e)(3) , and each test run must last at least 1 hour.
Where:
Mf = Total gaseous organic emissions mass flow rate, grams per hour (h).
MW = Molecular weight of analyte of interest (12 for Method 25 and 25A results).
Cc = Concentration of organic compounds in the vent gas (as carbon if determined by Method 25 or Method 25A), parts per million by volume (ppmv), dry basis.
Qsd = Volumetric flow rate of gases entering or exiting the add-on control device, as determined by Method 2, 2A, 2C, 2D, 2F, or 2G, dry standard cubic meters/hour (dscm/h).
41.6 = Conversion factor for molar volume, gram-moles per cubic meter (mol/m3) (@293 Kelvin (K) and 760 millimeters of mercury (mmHg)).
Where:
DRE = Organic emissions destruction or removal efficiency of the add-on control device, percent.
Mfi = Total gaseous organic emissions mass flow rate at the inlet(s) to the add-on control device, using Equation 1 of this section, grams/h.
Mfo = total gaseous organic emissions mass flow rate at the outlet(s) of the add-on control device, using Equation 1 of this section, grams/h.
40 C.F.R. §63.4766