Flue Gas Temperature Determination Gas Temperature 497.3020 F Ammonia (NH3) 0.5970 btu/lb- F Enthalpy 277.7701 btu/lbmass Argon (Ar) 0.1243 btu/lb- F Enthalpy 57.8310 btu/lbmass Carbon Dioxide (CO2) 0.2459 btu/lb- F Enthalpy 114.3984 btu/lbmass Carbon Monoxide (CO) 0.2558 btu/lb- F Enthalpy 119.0211 btu/lbmass Dry Air 0.2426 btu/lb- F Enthalpy 112.8828 btu/lbmass Freon 12 (CCL2F2) 0.1787 btu/lb- F Enthalpy 83.1520 btu/lbmass Helium (He) 1.2404 btu/lb- F Enthalpy 577.1810 btu/lbmass Hydrogen (H) 3.4698 btu/lb- F Enthalpy 1,614.5048 btu/lbmass Hydrogen Chloride (HCL) 0.1927 btu/lb- F Enthalpy 89.6516 btu/lbmass Methane (CH4) 0.7179 btu/lb- F Enthalpy 334.0370 btu/lbmass Neon (Ne) 0.2460 btu/lb- F Enthalpy 114.4783 btu/lbmass Nitrogen (N2) 0.2537 btu/lb- F Enthalpy 118.0270 btu/lbmass Nitric Oxide (NO) 0.2446 btu/lb- F Enthalpy 113.8040 btu/lbmass Nitrous Oxide (N2O) 0.2533 btu/lb- F Enthalpy 117.8533 btu/lbmass Nitrogen Dioxide (NO2) 0.2292 btu/lb- F Enthalpy 106.6292 btu/lbmass Oxygen (O2) 0.2344 btu/lb- F Enthalpy 109.0840 btu/lbmass Sulfur Dioxide (SO2) 0.1765 btu/lb- F Enthalpy 82.1381 btu/lbmass Sulfur Trioxide (SO3) 0.1973 btu/lb- F Enthalpy 91.7847 btu/lbmass Water Vapor (H2O) 0.4716 btu/lb- F Enthalpy 1,285.8187 btu/lbmass Total 3,905.5426 btu/lbmass