Encyclopedia of Environmental Science and Engineering, Volume I and II

756 NITROGEN OXIDES REDUCTION Oxygen in Fluegas (Excess Air),% 2 (9.5) 3 (15) 5 (28) 7 (45) 9 (68) 11 (100) 13 (148) 15 (229) 10 ...

NITROGEN OXIDES REDUCTION 757 In addition to the conversion properties of the graph, some of the pertinent local, state and fede ...

758 NITROGEN OXIDES REDUCTION Stationary Source Control Low excess air operation (LEA) NO x emissions are a func- tion of the am ...

NITROGEN OXIDES REDUCTION 759 TABLE 13 Calculation of component mass percents Type of gas USA/Texa s^ Calculated density of gas ...

760 NITROGEN OXIDES REDUCTION TABLE 14 Combustion-Emission Calculations Type of Gas USA\Texas Molecular weight of gas to be conv ...

NITROGEN OXIDES REDUCTION 761 through internal or external flue gas recirculation (FGR). In FGR, a portion of the hot inert flue ...

762 NITROGEN OXIDES REDUCTION fan, (2) additional ductwork, (3) flow control dampers, and (4) carbon monoxide and oxygen analyze ...

NITROGEN OXIDES REDUCTION 763 air into the furnace. For multiple burner applications, it is imperative that all burners receive ...

764 NITROGEN OXIDES REDUCTION One of the drawbacks of using anhydrous ammonia is that the chemical is hazardous and dangerous to ...

NITROGEN OXIDES REDUCTION 765 amount of ammonia ammonia slip catalyst surface area dust loading. Ammonia slip and sulfur conte ...

766 NITROGEN OXIDES REDUCTION where m  molar ratio of ammino to NO x h  NO x removal efficiency S  limit of ammonia slip, ppm ...

NITROGEN OXIDES REDUCTION 767 principle behind the catalytic converter is that the exhaust gases are passed through a catalyst b ...

768 NITROGEN OXIDES REDUCTION NYSDEC. “Reasonably Available Control Technology for Oxides of Nitrogen (NO x RACT),” NYCRR, Tit ...

769 NOISE Noise and sound refer to audible pressure fluctuations in air. Both are characterized by sound level in decibels and f ...

770 NOISE c is a wave a propagation speed; it does not represent particle velocity within the medium. Wavelength. If a pure-tone ...

NOISE 771 hours, 24 hours, etc. The time period may be identified by the subscript, e.g. L eq24 for a 24 hour averaging time. In ...

772 NOISE nearest whole decibel, fractional values are often retained for comparison purposes, and to insure accuracy of interme ...

NOISE 773 where I
sound intensity (W/m^2 ), where sound pressure and particle velocity are in-phase, W
sound power of the so ...

774 NOISE limit. An octave band is identified by its center frequency defined as follows: fffcLu
[] 12/ (8.1) where f c
the ce ...

NOISE 775 exposure time is halved with each 5 dBA sound level increase. The threshold level, the sound level below which no cont ...