Etane(C2H6) gas at 25°C, 1 atm enters a steam generator (of a Rankine cycle) operating at steady state. The Ethane burns completely with 100% of excess air entering at 127 °C, 1atm. Products of combustion exits at 527°C, 1 atm. In a separate stream, saturated liquid water enters at 10MPa and exits as superheated vapor at 480 °C with a negligible pressure drop. If the vapor mass flow rate is 5.0X 10° kg/h, determine the mass flow rate of the Ethane, in kg/h. Molecular weight of C: 12, H: 1. Enthalpy of formation: C2H6 (g) -84,680 kJ/kmole; CO2 -393,520 kJ/kmole; H2O (1) -285,830 kJ/kmole; H2O (g) -241,820 kJ/kmole. Enthalpy values for relevant gases T (K) CO2 (kJ/kmole) H20 (kJ/kmole) N2 (kJ/kmole) O2 (kJ/kmole) 298 9,364 9,904 8,669 8,682 400 11,640 11,711 300 32,179 27,896 23,714 24,523

Elements Of Electromagnetics
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Etane(C2H6) gas at 25°C, 1 atm enters a steam generator (of a Rankine
cycle) operating at steady state. The Ethane burns completely with 100% of
excess air entering at 127 °C, 1atm. Products of combustion exits at 527°C,
atm. In a separate stream, saturated liquid water enters at 10MPA and exits as
superheated vapor at 480 °C with a negligible pressure drop. If the vapor mass
flow rate is 5.0×105 kg/h, determine the mass flow rate of the Ethane, in kg/h.
1
Molecular weight of C: 12, H: 1.
Enthalpy of formation: C2H6 (g) -84,680 kJ/kmole;
CO2 -393,520 kJ/kmole;
H20 (I) -285,830 kJ/kmole; H2O (g) -241,820 kJ/kmole.
Enthalpy values for relevant gases
T (K)
CO2 (KJ/kmole) | H20 (kJ/kmole)
N2 (kJ/kmole)
O2 (kJ/kmole)
298
9,364
9,904
8,669
8,682
400
11,640
11,711
800
32,179
27,896
23,714
24,523
Enthalpy of saturated water at 10MPA: 1407.6 kJ/kg.
Enthalpy of superheated water vapor at 10MPa, 480°C: 3321.4 kJ/kg.
Transcribed Image Text:Etane(C2H6) gas at 25°C, 1 atm enters a steam generator (of a Rankine cycle) operating at steady state. The Ethane burns completely with 100% of excess air entering at 127 °C, 1atm. Products of combustion exits at 527°C, atm. In a separate stream, saturated liquid water enters at 10MPA and exits as superheated vapor at 480 °C with a negligible pressure drop. If the vapor mass flow rate is 5.0×105 kg/h, determine the mass flow rate of the Ethane, in kg/h. 1 Molecular weight of C: 12, H: 1. Enthalpy of formation: C2H6 (g) -84,680 kJ/kmole; CO2 -393,520 kJ/kmole; H20 (I) -285,830 kJ/kmole; H2O (g) -241,820 kJ/kmole. Enthalpy values for relevant gases T (K) CO2 (KJ/kmole) | H20 (kJ/kmole) N2 (kJ/kmole) O2 (kJ/kmole) 298 9,364 9,904 8,669 8,682 400 11,640 11,711 800 32,179 27,896 23,714 24,523 Enthalpy of saturated water at 10MPA: 1407.6 kJ/kg. Enthalpy of superheated water vapor at 10MPa, 480°C: 3321.4 kJ/kg.
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