2. We wish to consider the work that can be obtained by carrying out the following reactions in a steady- [ egin{array}{l} mathrm{H}_{2(n)}+1 / 2 mathrm{O}_{2(n)} ightarrow mathrm{H}_{2} mathrm{O}_{m} \ mathrm{H}_{2(n)}+1 / 2 mathrm{O}_{2(n)} ightarrow mathrm{H}_{2} mathrm{O}_{i n} end{array} ] flow process: [ mathrm{H}_{2(n)}+1 / 2 mathrm{O}_{-(n)} ightarrow mathrm{H}_{2} mathrm{O}_{(n)} ] Hydrogen is burned completely with the theoretical amount of air, both initially at ( 101.325 mathrm{kPa} ) and ( 300 mathrm{~K} ), in an adiabatic reactor at constant pressure. If the flue gases are cooled to ( 500 mathrm{~K} ) at a constant pressure of ( 101.325 mathrm{kPa} ) by the transfer of heat to a boiler to generate superheated steam at ( 3.5 mathrm{MPa} ) and ( 540^{circ} mathrm{C} ), what is the work that will be obtained from a simple power-plant cycle operating as follows? A turbine ( (eta=80 %) ) expands the steam from the boiler to ( 0.014 mathrm{MPa} ). A condenser at ( 0.014 mathrm{MPa} ) delivers saturated liquid water to a pump ( (eta=80 %) ) that returns the water to the boiler. The total enthalpy and entropy changes for the reversible cooling of flue gases to ( 500 mathrm{~K} ) are ( Delta H=-224.021 mathrm{~kJ} ) and ( Delta S=-0.1714 mathrm{~kJ} / mathrm{K} ). Take as a basis ( 1 mathrm{~mol} ) of ( mathrm{H}_{2} ) burned to form the flue gases and ( mathrm{T}_{a}=300 mathrm{~K} ). Make a thermodynamic analysis of the process. Represent your results in a table including ( mathbf{W}_{ ext {net. }} mathbf{W}_{ ext {ideal }} ) and ( mathbf{W}_{ ext {lost. }} ) Calculate all work values as percentage of ( W_{ ext {iseal. }} ). Evaluate the thermodynamic efficiency (II) of the process. PS: There is no beat transfer between surroundings and the boiler.

2. We wish to consider the work that can be obtained by carrying out the following reactions in a steady. H2n+1/2OsinH2OmH2n+1/2OsinH2O4n flow process: Hydrogen is bumed completely with the theoretical amount of air, both initially at 101.325kPa and 300K, in an adiabatic reactor at constant pressure. If the flue gases are cooled to 500K at a constant pressure of 101.325kPa by the transfer of heat to a boiler to generate superheated steam at 3.5MPa and 540C, what is the work that will be obtained from a simple power-plant cycle operating as follows? A turbine (=80%) expands the steam from the boiler to 0.014MPa. A condenser at 0.014MPa delivers saturated liquid water to a pump (=80%) that returns the water to the boiler. The total enthalpy and entropy changes for the reversible cooling of flue gases to 500K are H=224.021kJ and S=0.1714kJ/K. Take as a basis 1mol of H2 burned to form the flue gases and Ta=300K. Make a thermodynamic analysis of the process. Represent your results in a table including Waet.Wileal and What. Calculate all work values as percentage of Wideat. Evaluate the thermodynamic efficiency (Di) of the process. PS: There is no beat transfer between surroundings and the boiler. 2. We wish to consider the work that can be obtained by carrying out the following reactions in a steady. H2n+1/2OsinH2OmH2n+1/2OsinH2O4n flow process: Hydrogen is bumed completely with the theoretical amount of air, both initially at 101.325kPa and 300K, in an adiabatic reactor at constant pressure. If the flue gases are cooled to 500K at a constant pressure of 101.325kPa by the transfer of heat to a boiler to generate superheated steam at 3.5MPa and 540C, what is the work that will be obtained from a simple power-plant cycle operating as follows? A turbine (=80%) expands the steam from the boiler to 0.014MPa. A condenser at 0.014MPa delivers saturated liquid water to a pump (=80%) that returns the water to the boiler. The total enthalpy and entropy changes for the reversible cooling of flue gases to 500K are H=224.021kJ and S=0.1714kJ/K. Take as a basis 1mol of H2 burned to form the flue gases and Ta=300K. Make a thermodynamic analysis of the process. Represent your results in a table including Waet.Wileal and What. Calculate all work values as percentage of Wideat. Evaluate the thermodynamic efficiency (Di) of the process. PS: There is no beat transfer between surroundings and the boiler