1. Methane gas (CH4) at 258C, 1 atm enters a steam generator operating at steady state. The methane burns completely with 140% of theoretical air entering at 1278C, 1 atm. Products of combustion exit at 4278C, 1 atm. In a separate stream, saturated liquid water enters at 8 MPa and exits as superheated vapor at 4808C with a negligible pressure drop. If the vapor mass flow rate is 3.7 3 105 kg/h, determine the volumetric flow rate of the methane, in m3/h.
2. Liquid ethanol (C2H5OH) at 778F, 1 atm enters a combustion chamber operating at steady state and burns completely with dry air entering at 3408F, 1 atm. The fuel flow rate is 50 lb/s, and the equivalence ratio is 0.8. Products of