Engineering, 05.11.2020 19:10 allykram7
An automotive fuel cell consumes fuel at a rate of 28m3/h and delivers 80kW of power to the wheels. If the hydrogen fuel has a heating value of 141,790 kJ/kg and a density of 0.0899 kg/m3, determine the efficiency of this fuel cell.
Answers: 1
), dimensionless, as:
(Eq. 1)
- Maximum power possible from hydrogen flow, measured in kilowatts.
- Output power of the automotive fuel cell, measured in kilowatts.
(Eq. 2)
- Volume flow rate, measured in cubic meters per second. 
- Density of hydrogen, measured in kilograms per cubic meter.
- Heating value of hydrogen, measured in kilojoules per kilogram.
, 
, 
and 
, then the efficiency of this fuel cell is:
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An automotive fuel cell consumes fuel at a rate of 28m3/h and delivers 80kW of power to the wheels....
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