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Determine the theoretical conversion efficiency for a methane/oxygen fuel cell that operates at a temperature of 500 K.
CH4 + 2O2 rightarrow CO2 + 2H2O
Each component gas is considered to be at a pressure of 1 atm.
Consider the fuel cell reaction in problem 2. The conversion efficiency of the real fuel cell is 0.60. The cell has an output of 5 kW. The current density is 1000 A/m2. The voltage load is 62% of the reversible voltage. Calculate the fuel consumption rate [kg/hr], and determine the electrode area.
Draw conclusions concerning the process, and relate your interpretation to the possible existence of chance and assignable causes of variation.
draw a block-diagram of a yaw rate damping system.include the following components the airframe the rudder actuator the
As shown, a 130 lb bungee jumper wants to jump from the top of a 655 ft high bridge and be able to just touch the water below. Given that the bungee cord has a spring constant of 2.33 lb/ft, what should the bungee cord's relaxed length, l, be for ..
Two kilograms of air within a piston-cylinder assembly execute a carnot power cycle with maximum and minimum temperatures of 750k and 300k, respectively.
What is the wear coefficient of the bearing material in m2N-1 ?
a rocket motor is used to accelerate a kinetic energy weapon to a speed of 3500 mph in horizontal flight. the exit
Calculate the net cycle work in kJ assuming air is an ideal gas with constant specific heats.
Also determine the axial force and deformation of the diameter due to temperature rise. Let E = 120 GPa and Co-efficient of linear thermal expansion = 0.0000168 per °C.
a steel rod with a diameter of 2 cm length l25cm thermal conductivity of 50 wmk is exposed to ambient air at 20c. heat
a four-stroke-cycle engine operates on the air-standard diesel cycle. the engine has six cylinders with a 0.105 m bore
an air-standard dual cycle has a compression ratio of 18 and a cutoff ratio of 1.1. the pressure ratio during
minimum weight design of a variable shape three-bar truss.numerical solution using the matlab optimization toolbox
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