Calculate the rate of irreversibility of the process
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A PEC fuel cell operating at 25?C generates 1.0 V that also accounts for losses. For a total power of 1 kW, what is the hydrogen mass flow rate?
For the combustion of methane, 150% theoretical air is used at 25oC, 100 kPa, and relative humidity of 70%. Find the composition and dew point of the products.
Find the work and heat transfer per kilogram of fuel mixture and also the exhaust temperature.
The gas-turbine cycle in Problem 10.28 has qH = 960 kJ/kg air added by combustion. Assume the fuel is methane gas. Find the air-fuel ratio on a mass basis.
Liquid hexane enters a combustion chamber at 31oC, 200 kPa, at the rate of 1 kmol/s; 200% theoretical air. Calculate the rate of irreversibility of the process.
This being the case, what right does the government have to intrude and tell the two parties, "that's too bad- you still can't have it'?"
Calculate x if half of the H2O in the products is condensed. Calculate the absolute entropy of the products at the exit conditions.
There is enough excess air to give a flame temperature of 1800 K. What are the percent theoretical air and the irreversibility in the process?
Calculate the percent theoretical air required and the irreversibility of the process per kmol of pentane burned.
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