Calculate the HHV and LHV of gaseous n-octane fuel (C₈H₁₈). Compare your results with the values in Table A–27.

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TABLE A-27 Properties of some common fuels and hydrocarbons Higher heating value, Lower Enthalpy of vaporization,? kJ/kg Specific heat,' kJ/kg-K Molar Density, kg/L heating value, kJ/kg 2 mass, Fuel (phase) Formula kg/kmol kJ/kg Carbon (s) Hydrogen (g) Carbon monoxide (g) CO Methane (g) Methanol (I) Acetylene (g) Ethane (g) Ethanol (I) Propane (I) Butane (I) 1-Pentene (I) Isopentane (1) Benzene (1) Hexene (1) Hexane (I) Toluene (I) Heptane (I) Octane (1) Decane (I) Gasoline (I) Light diesel (I) Heavy diesel (I) Natural gas (g) 32,800 141,800 10,100 55,530 22,660 49,970 51,900 29,670 50,330 49,150 47,760 48,570 41,800 C 12.011 0.708 32,800 120,000 10,100 50,050 19,920 48,280 47,520 26,810 46,340 45,370 44,630 44,910 40,100 H, 2.016 28.013 14.4 1.05 CH, CH,O C,H, C,H, C,H,O CHs CH10 CH10 CH12 CH, CH12 CH14 C,H, CH16 CH18 C0H22 C,H187m 16.043 32.042 26.038 509 1168 2.20 0.790 2.53 1.69 30.070 46.069 172 919 1.75 0.790 2.44 335 362 363 44.097 0.500 2.77 58.123 70.134 72.150 0.579 0.641 2.42 2.20 2.32 0.626 0.877 433 392 366 412 78.114 1.72 84.161 0.673 1.84 47,500 48,310 42,400 48,100 47,890 47,640 47,300 46,100 45,500 44,400 44,740 40,500 44,600 44,430 44,240 44,000 43,200 42,800 86.177 0.660 2.27 1.71 2.24 92.141 0.867 100.204 114.231 0.684 0.703 365 363 2.23 142.285 0.730 361 2.21 100–110 170 0.72-0.78 0.78-0.84 350 270 2.4 2.2 200 0.82–0.88 230 1.9 CH3 8No.ln C,H3,8n0.ln 50,000 45,000 18