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Unformatted text preview: ME 530 Fall 2010
Project 2 Due: December 6. 2010 This project " .  rename the adiabatic Harrie tern mature and irreversibility for burning propane g with various amounts of theoretical air. Some of the CO: in the products
may dissoc r I = cording to the equilibrium reaction:
* m. c: m + +0. The products can include C02. H20. (‘0. 0;. and N2. The extent of the equilibrium reaction. C.
varies Front 0 For all ('0: to l for no (‘0; The composition of the air is assumed to be 3.?0 moles of N; for every mole of 02. with no other substances. The air and fuel enter the
combustion chamber as separate streams. each at 25 “C. The environment temperature is also 25
"C. The presSure is 1 atm everywhere. I J For [00% theoretical air, calculate the adiabatic ﬂame temperature {K} and the irreversibility
tlrthrnolCillil for the case with no dissociation {Q = 0]. Assume that all reactants and products
behave as ideal gases with constant speci tc eats. Evaluate speciﬁc heats for each substance at_l_.§_®_:§I and then Whit
all calculations for this project. Speciﬁc heat data can be found on twitchsite given in
project I. You may need to do a general search For the formula and then ﬁnd the gas phase
tlietmochernisuy data. 2] For the equilibrium reaction. use equation £1.40} to calcul a function oftemperature.
Use data for 1000I K and 2000 K to ﬁnd the constants for equa 1 I40]. You will then use this equation to interpolate or extrapolate KptTl for the rest ofthis project, 3] For various values of theoretical air. calculate the adiabatic ﬂame temperature {K}. the extent
of the equilibrium reaction {C}. and the irreversibility tht’kmolCiHi}. Assume that all reactants
and products behave as ideal gases with constant speciﬁc heats. Perform these calculatimls for
the following values oftheoretical air: [00%. ISD%, 200%. 250%. 300%. 350%. and 400%.
Make a table with your results. 4] Turn in a report describing how your calculations were done (including equations and
methods}. the answers for the above cases. a discussion of your results and experiences with this
project. and a hard copy of any programs you wrote. Hint: Pan 3 of this project requires the solution of two simultaneous. nonlinear equations. You
can use any method you prefer to solve these equations. Almost all nonlinear equation solvers
use iteration (even ifyou do it by hand). so a good stoning guess For the solution is important. A
good guess for the temperature would be the no dissociation temperature calculated in part I.
Then. iterate from that solution. 1When changing percent theoretical air. the solution item the previous case may be a good starting guess. Fund Ckewu an] Exeqy (“04' "wk. ) ‘P‘i/Wo MA! VINWWI GJ Plow we =u‘thmm, H75 “77% akaM cJ e x¢r yy _,,,. ) “Pahal eyes5')! [negled' r15 +53% =3 F°r 2y... 0"; «NC «Love '. ’5 Squl'amcek *5 wx hr”
44%, Syrl‘em "' #54 ewv: 1'94 «ac/J1 CinemaHaul Po'Lch‘a, 9J ng/ u ‘1; fl—
W ‘P /“'h/‘l> : é ’% 156/43,} Fa ( Hydro 4M {av twlj F 5 a
JawF = (LA/‘01 (72/ r7’/‘°':’) +£A1”"(ﬂﬂl‘;4")
' (03’ 01, (7;! Rho») (1 —" rich
I/f‘o/lcz ml PoIn") =/d°/(‘1/7;/ Pa) Q lo ) T.—
\_’_—————\J
[U
P sapwe. ‘0', “7,01”) Old 02' ...
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This note was uploaded on 02/28/2012 for the course ME 530 taught by Professor Ronnelson during the Fall '10 term at Iowa State.
 Fall '10
 RonNelson

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