Propane is combined with 50% excess air in a mixer before being fed to a furnace. The propane (C3H5) enter the mixer at 25 degrees celsius at a rate of 300Kg/h and the air enters the mixer at 500 degrees celsius. Heat is lost form the mixer to the surroundeings at a rate of 8.5KW. Given MW(propane= 4.4; Cp(Propane)=0.068032KJ/mol. degrees celsius; Cp(air) =0.0289KJ/mol degrees celsius. Use table 8 for calculation. 

Calculate the temperature of the exit stream form the mixer. 

 

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H(kJ/mol) Reference state: Gas, Pref = 1 atm, Tref = 25°C T 0 25 100 Air 02 N₂ H₂ -0.72 -0.73 -0.73 -0.72 -0.73 -0.92 -0.84 0.00 0.00 0.00 2.19 2.24 2.19 200 5.15 5.31 5.13 300 8.17 8.47 8.12 0.00 со CO2 H2O 0.00 0.00 2.16 2.19 2.90 7.96 5.06 5.16 7.08 8.17 11.58 0.00 2.54 6.01 9.57 400 11.24 11.72 11.15 10.89 11.25 16.35 13.23 500 14.37 15.03 14.24 13.83 14.38 21.34 17.01 600 17.55 18.41 17.39 16.81 17.57 26.53 20.91 700 20.80 21.86 20.59 19.81 20.82 31.88 24.92 800 24.10 25.35 23.86 22.85 24.13 37.36 29.05 900 27.46 28.89 27.19 25.93 27.49 42.94 33.32 1000 30.86 32.47 30.56 29.04 30.91 48.60 37.69 1100 34.31 36.07 33.99 32.19 34.37 54.33 42.18 1200 37.81 39.70 37.46 35.39 37.87 60.14 46.78 1300 41.34 43.38 40.97 38.62 41.40 65.98 51.47 1400 44.89 47.07 44.51 41.90 44.95 71.89 56.25 1500 48.45 50.77 48.06 45.22 48.51 77.84 61.09 H(kJ/mol) Reference state: Gas, Pref = 1 atm, Tref = 25°C T 0 25 100 Air 02 N₂ H₂ -0.72 -0.73 -0.73 -0.72 -0.73 -0.92 -0.84 0.00 0.00 0.00 2.19 2.24 2.19 200 5.15 5.31 5.13 300 8.17 8.47 8.12 0.00 со CO2 H2O 0.00 0.00 2.16 2.19 2.90 7.96 5.06 5.16 7.08 8.17 11.58 0.00 2.54 6.01 9.57 400 11.24 11.72 11.15 10.89 11.25 16.35 13.23 500 14.37 15.03 14.24 13.83 14.38 21.34 17.01 600 17.55 18.41 17.39 16.81 17.57 26.53 20.91 700 20.80 21.86 20.59 19.81 20.82 31.88 24.92 800 24.10 25.35 23.86 22.85 24.13 37.36 29.05 900 27.46 28.89 27.19 25.93 27.49 42.94 33.32 1000 30.86 32.47 30.56 29.04 30.91 48.60 37.69 1100 34.31 36.07 33.99 32.19 34.37 54.33 42.18 1200 37.81 39.70 37.46 35.39 37.87 60.14 46.78 1300 41.34 43.38 40.97 38.62 41.40 65.98 51.47 1400 44.89 47.07 44.51 41.90 44.95 71.89 56.25 1500 48.45 50.77 48.06 45.22 48.51 77.84 61.09

Answer rating: 100% (QA)

Step 1 Given Flow prop ane 300 kgh Excess air 50 Step 2 ... View the full answer