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PROCEDURE FOR CALCULATING POWER PLANT EMISSIONS   By: Marcial T. Ocampo mob 17, 2009     Calculating power demonstrate emissions (mg SOX / Nm3, mg NOX / Nm3, mg CO / Nm3 or as ppmv SOX, ppmv NOX, ppmv CO) is sometimes difficult for terrene power plant engineers.  Carbon dioxide emissions are usually habituated in % by peck dry or as kg carbonic acid gas per kWh generation.   Well, your favorite qualification technology well(p) has developed a spreadsheet lay (in MS Excel) for calculative in a breeze the common power plant emissions.   SO2 and CO2 emissions are readily calculated from fuel outline (by large number for solid and liquid fuels, by volume for gaseous fuels) and typically calculated by Orsat or separate gravimetric methods.   On the other hand, NOX and CO are result of thermal dissociation of N2 into NOx at high up conflagration temparature enchantment CO is the result of incomplete combustion due to substandard O2 or inadequate fue l and publicise mixing.  Hence, NOX and CO are measurable using instruments and later on computed as mg NOX / Nm3 or mg CO / Nm3).   (Nm3 means popular cubic meter of gas).   The basic locomote followed by my model are as follows:   Basic step:   1) Input subjective gas (fuel) analysis: % volume (same as % mol), molecular weights: e.g. H2, CH4, C2H6, C3H8 ... CO2, S, O2, N2, water system moisture, ash.

    2) Convert % volume to crowning(prenominal) analysis % big money or weight (%C, %H2, % S, % O2, %N2, % water supply moisture, ash)   3) From the combustion equations;   C + O2 = C O2 S + O2 = S02 H2 + 1/2 O2 = H20   ! calculate the stoichiometric O2 in mols and lbs and that of N2 from air analysis.   4) victimisation the slothful %O2 wet basis measurement in the good mickle gas, the level of overmuch air ratio is computed. Use this excess air ratio to compute actual excess multitude of O2 and N2 to compute the total flue gas (fuel + air).   5) Convert the down to mols using their molecular weights and convert to % volume. The computed %O2 must tally with the measured %O2 wet...If you want to get a full essay, order it on our website: BestEssayCheap.com

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