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20 Cards in this Set
- Front
- Back
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HHV Dulong's for Solids |
33820C + 144212(H-O/8) + 9340S |
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Dulong's for liquids/gasses |
13500(%mc) + 60890(%mh) |
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ASME HHV |
41130 + 139.6 (API) |
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Bureau of Standards HHV |
51716 + 8793.8 (SG)² |
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Sherman & Knoff HHV |
42450 - 93(Be-10) |
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LHV |
Qh-Qwater Qh - 9H(LV) H = 26-15 SG (in%) Lv = Lv @ 25°C = 2242 kj/kg |
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Air Composition per Mass (Gravimetric) |
77% N 23% O2 |
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Air Compositiongl per Volume (Volumetric)
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79% N2 21% O2 |
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%V |
%V = %G/MW |
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Theoretical Air Fuel Ratio |
(A/F)t = 11.5C + 34.5(H-O/8) +4.3S |
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Theoretical Air-Fuel Ratio Given Hq |
Qh/3117(in kj/kg) |
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Actual Air-Fuel Ratio |
(A/F)t(1+e) |
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Actual Air-Fuel Ratio Exhaust |
(1/32.72) x (C x N2/CO2 +CO) |
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Theoretical Fuel-Air Ratio |
1/(A/F)t |
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Actual Fuel-Air Ratio |
1/(A/F)a |
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Equivalence Ratio |
Ø = (F/A)a/(F/A)t = (A/F)t/(A/F)a |
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Equivalence Ratio Criteria |
Stoichiometric = 1 Fuel Lean < 1 Fuel Rich > 1 |
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Combustion General Formula |
CnHm + aO2 + 3.76N2 = bCo2 + cH2O +3.76aN2 |
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Combustion with excess air |
CnHm + (1+e)a(O2 + 3.76N2) = bCO2 + cH2O + (1+e)a(3.76)N2 + e(a)O2 |
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Combustion Reaction |
CnHm + (n+m/4)O2 + 3.76(n+m/4)N2 = nCO2 + (m/2)H2O + 3.76(n+m/4)N2 |
