b 68179 kmol d 01237775 kmol e 735 kmol f 3952 kmol g kmol Then the percentage

B 68179 kmol d 01237775 kmol e 735 kmol f 3952 kmol g

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b = 6.8179 kmol d = 0.1237775 kmol e = 7.35 kmol f = 39.52 kmol g = 0 kmol Then, the percentage of each parameter, or the mass fraction, is calculated. ¿ b + d + e + f + g = 6.8179 + 0.1237775 + 7.35 + 39.52 + 0 = 53.79 kmol m b = 6.8179 53.79 × 100% = 12.628% m d = 0.1237775 53.79 × 100% = 0.2301% m e = 7.35 53.79 × 100% = 13.664%
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m f = 39.52 53.79 × 100% = 73.4777% m g = 0 53.79 × 100% = 0% i m i C p, i = m b c p ,C O 2 + m d c p,CO + m e c p, H 2 O + m f c p, N 2 = 12.628% × 1.218 + 0.2301% × 1.173 + 13.664% × 2.327 + 73 T exit = 1340 T amb = 90 ΔT = T exit T amb = 1340 90 = 1250 K ´ m fuel = 0.0082 kg / s ´ m total = ´ m fuel × ( 1 + φ )= 0.0082 × ( 1 + 14.41 )= 0.123 kg / s ΔT i m i c p, i = 1250 × 1.3238 × 0.123 = 209.1754 kW ´ E loss = ´ Q fuel ( ´ W engine + ΔT i m i C p ,i + ´ Q cooling ) = 360.9144 ( 91.933 + 209.1754 + 56.18 ) = 3.62 kW ´ m fuel + ´ m air = i ´ m i ´ m air = φ× ´ m fuel
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Results Following the same calculation process shown in the Calculations section, all work and heat effects are calculated and summarized into the table below. In order to better manifest the trend with respect to the engine speed, these values are plotted as well. 50% Throttle Opening 50% Engine Speed ´ Q fuel ´ Q cooling ´ W engine ΔT i m i C p,i ´ E loss RPM [kW] [kW] [kW] [kW] [kW] 2660 360.9144 56.18466155 91.933 209.18 3.62 3000 409.1472 63.66041263 101.2455 230.11 14.13 3460 503.3952 97.29166475 115.2515 263.79 27.064 3930 744.8364 88.40163623 139.8365 350.15 166.45 4470 906.444 84.97616329 158.685 404.28 258.51 Table ##. The summary of all work and heat effects at 50% throttle opening. 2000 2500 3000 3500 4000 4500 5000 0 100 200 300 400 500 600 700 800 900 1000 Work and Heat Effects vs. Engine Speed at 50% Throttle Q-dot fuel Linear (Q-dot fuel) Q-dot cooling Linear (Q-dot cooling)
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  • Spring '10
  • Lalla-+
  • Heat, 5th millennium, 3rd millennium

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