Engineering, 16.04.2020 17:23 Weser17

Consider a fuel cell vehicle. The vehicle draws 30 kW of power at 60 mph and is 40% efficient at rated power. (It converts 40% of the energy stores in the hydrogen fuel to MAE 14:650:477 Alternative Energy Systems II electric power.) You are asked to size the fuel cell system so that a driver can go at least 300 miles at 60 mph before refueling. Specify the minimum volume and weight requirements for the fuel cell system (fuel cell + fuel tank) given the following information: • Fuel cell power density = 1 kW/L, 500 W/kg • Fuel take energy density (compressed hydrogen) = 4 MJ/L, 8 MJ/kg

Answers: 1

Show answers

Another question on Engineering

Engineering, 04.07.2019 18:20

Derive the correction factor formula for conical nozzle i=-(1+ cosa) and calculate the nozzle angle correction factor for a nozzle whose divergence hal-fangle is 13 (hint: assume that all the mass flow originates at the apex of the cone.

Answers: 3

Answer

Engineering, 04.07.2019 18:20

How much power could a wind turbine produce if it had the following specifications? cp = 0.45 -d=1.2kg/m3 d=50m v 5m/s

Answers: 2

Answer

Engineering, 04.07.2019 18:20

Amixture of slurry and mud is to be pumped through a horizontal pipe of diameter 500 mm. the fluid behaves as a bingham plastic with a yield stress of 30 pa and viscosity 0.04 pa.s. describe the effects of the shear stress through a transverse section of the pipe by plotting the variation in shear stress and velocity profile: (i) just before the slurry starts to move (ii) as the slurry flows when the pressure gradient is double that in part (i)

Answers: 3

Answer

Engineering, 04.07.2019 19:10

Air inially occupying a volume of 1 m2 at 100 kpa, 27 c undergoes three internally reversible processes in series. process 1-2 compression to 500 kpa during which pv constant process 2-3 adiabatic expanslon to 100 kpa process 3-1: constant-pressure expansion to 100 kpa (a) calculate the change of entropy for each of the three processes. (b) calculate the heat and work involved in each process. (c) is this cycle a power cycle or refrigeration cycle?

Answers: 3

Answer

You know the right answer?

Consider a fuel cell vehicle. The vehicle draws 30 kW of power at 60 mph and is 40% efficient at rat...

Questions