Wisconsin Administrative Code › Department of Natural Resources › NR 400-499 - Environmental Protection - Air Pollution Control › Chapter NR 465 - National emission standards for hazardous air pollutants for general surface coating processes › Subchapter I - Wood Furniture Manufacturing Operations › Section NR 465.03 - Symbols

Current through June 24, 2024
The symbols used in this subchapter have the following
					 meanings:
(1) "ac" means after the
				  control system is installed and operated.
(2) "Ak" is the area of each natural draft
				  opening k in a total enclosure, in square meters.
(3) "bc" means before control.
(4) "Caj" is the concentration of VHAP in gas
				  stream j exiting the control device, in parts per million by volume.
(5) "Cbi" is the concentration of VHAP in gas
				  stream i entering the control device, in parts per million by volume.
(6) "Cc" is the VHAP content of a finishing
				  material c in kilograms of VHAP per kilogram of coating solids (kg VHAP/kg
				  solids), as supplied. Also given in pounds of VHAP per pound of coating solids
				  (lb VHAP/lb solids).
(7) "Cdi" is
				  the concentration of VHAP in gas stream i entering the control device from the
				  affected source, in parts per million by volume.
(8) "Cfk" is the concentration of VHAP in
				  uncontrolled gas stream k emitted directly to the atmosphere from the affected
				  source, in parts per million by volume.
(9) "E" is the emission limit achieved by an
				  emission point or a set of emission points, in kg VHAP/kg solids (lb VHAP/lb
				  solids).
(10) "F" is the control
				  device efficiency, expressed as a fraction.
(11) "FV" is the average inward face velocity
				  across all natural draft openings in a total enclosure, in meters per
				  hour.
(12) "G" is the VHAP content
				  of a contact adhesive, in kg VHAP/kg solids (lb VHAP/lb solids), as
				  applied.
(13) "Mc" is the mass of
				  solids in finishing material c used monthly, kg solids/month (lb
				  solids/month).
(14) "N" is the
				  capture efficiency, expressed as a fraction.
(15) "Qaj" is the volumetric flow rate of gas
				  stream j exiting the control device, in dry standard cubic meters per
				  hour.
(16) "Qbi" is the volumetric
				  flow rate of gas stream i entering the control device, in dry standard cubic
				  meters per hour.
(17) "Qdi" is the
				  volumetric flow rate of gas stream i entering the control device from the
				  emission point, in dry standard cubic meters per hour.
(18) "Qfk" is the volumetric flow rate of
				  uncontrolled gas stream k emitted directly to the atmosphere from the emission
				  point, in dry standard cubic meters per hour.
(19) "Qin i" is the volumetric flow rate of
				  gas stream i entering the total enclosure through a forced makeup air duct, in
				  standard cubic meters per hour, wet basis.
(20) "Qout j" is the volumetric flow rate of
				  gas stream j exiting the total enclosure through an exhaust duct or hood, in
				  standard cubic meters per hour, wet basis.
(21) "R" is the overall efficiency of the
				  control system, expressed as a percentage.
(22) "S" is the VHAP content of a solvent,
				  expressed as a weight fraction, added to finishing materials.
(23) "W" is the amount of solvent, in
				  kilograms (pounds), added to finishing materials during the monthly averaging
				  period.