2. Suppose a new fuel cell is proposed, working on the gas-phase reactionCO + 02 → CO₂1(such devices already exist in the solid state this question will assume just gas phasereactions etc). If the device is to operate at a temperature of 400K and initially at a pressureof 1 bar:(a) Calculate the open circuit voltage produced by the fuel cell(b) Calculate the mass flow rate (in kg/hr) of CO required to produce a power output1kW(c) Calculate the entropy change of the system during the reaction(d) Calculate the heat rejected to maintain isothermal conditions(e) Calculate the irreversibility arising as a result of the fuel cell's operation.(f) As part of the design revision, the operating pressure is raised to 35bar, with the temperaturemaintained constant. Repeat steps 1-5; what observations do you make?

Key references: Fu, S., Ye, L., Shen, F., & He, Y. (2023). Efficiency Maximization of a Direct…

Answered: 2. Suppose a new fuel cell is proposed,…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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2. Suppose a new fuel cell is proposed, working on the gas-phase reaction 1 → - CO₂ (such devices already exist in the solid state this question will assume just gas phase reactions etc). If the device is to operate at a temperature of 400K and initially at a pressure of 1 bar: (a) Calculate the open circuit voltage produced by the fuel cell [4 marks] (b) Calculate the mass flow rate (in kg/hr) of CO required to produce a power output 1kW [1 mark] (c) Calculate the entropy change of the system during the reaction (d) Calculate the heat rejected to maintain isothermal conditions (e) Calculate the irreversibility arising as a result of the fuel cell's operation. [2 marks] [3 marks] [5 marks] (f) As part of the design revision, the operating pressure is raised to 35bar, with the temperature maintained constant. Repeat steps 1-5; what observations do you make? [10 marks]
Please solve this. Thank you very much
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A-c please
A mixture of ideal gases consist of 2 kmol CH4, 1kmol N2, and 1kmol O2 all at 20degree C and 20 kPa. Heat is added until the temperature increases to 400 degree Cwhile the pressure remains constant. Calculate:A.The heat transferB.The work done Subject : Combustion Engineering Please provide complete solutions with formulas on how to get each values without rounding off.
In the engine of a car that uses petrol as fuel, when the piston is at its highest position, air at 10 bar and 100°C enters the cylinder. Without any change in the volume, ignition occurs, and the air temperature rises to 1500°C. What is the air pressure after the ignition? (Select the closest value)[Whenever necessary, assume air as an ideal gas and consider R = 287 J/(kg.K).]
use JANAF tables from internet
2. In the engine of a car that uses petrol as fuel, when the piston is at its highest position, air at 10 bar and 100°C enters the cylinder. Without any change in the volume, ignition occurs, and the air temperature rises to 1500°C. What is the air pressure after the ignition? (Select the closest value) [Whenever necessary, assume air as an ideal gas and consider R = 287 J/(kg.K).]
Ql:- C4HS is burned in an engine with a fuel-rich air-fuel ratio. Dry analysis of the exhaust gives the following volume percents: COz 14.95%, C4HS 0.75%, CO 0%, Hz 0%, Oz 0%, with the rest being Nz. Higher heating value of this fuel is QHHV = 46.9 MJ/kg. Write the balanced chemical equation for one mole of this fuel at these conditions. Calculate: (a) Air-fuel ratio. (b) Equivalence ratio. (c) Lower heating value of the fuel. [MJ/kg] (d) The energy released when one kg of this fuel is burned in the engine with a combustion efficiency of 98%. [MJ]
External Problem: Fuel, air and combustion Gasoline having a chemical formula C3H17 is burned in an engine at a fuel-air equivalence ratio ø =1.19 and a temperature of 1000K. a) Write the stoichiometrc combustion equation of the fuel, b) Write the reaction equation corresponding to the given fuel-air equivalenee ratio
The heat of combustion of H2(g) to form H2O(l) under constant-pressure conditions is -285.83 kJ/mol at 25°C. If the water is formed at 1 bar and has a density of 1000 kg/m³, calculate the change in internal energy for this reactionA. -187 kJ/molB. -210 kJ/molC. -282 kJ/molD. -310 kJ/mol
1. At ordinary room temperature, it was found that specific heat ratio ‘k’ of air was 1.40. Estimate the R, Cp and Cv of air assuming that air content is solely composed of 21% of Oxygen and the rest is Nitrogen. Draw a figure or FBD that will support the problem. Explain each step by step formula.

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