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A neighborhood fuel cell power plant is to be designed for an electric power output of 2000 kW with liquid-water product. Estimate the flow rates of hydrogen and oxygen during peak power production, assuming an 80% efficient power conditioner is used to convert DC to AC power and the fuel cell efficiency is 55%. What is the plant heat rate?
a hail storm caused nearly golf-ball sized hail to fall on a house. the hailstones were nearly spherical with a
water starts at a temperature of 19 degrees celcius and is then boiled until it is a superheated steam at temperature
The specific volume of superheated steam is represented by pv 5 0.231(h 2 1943), where p is in kPa, v is in m3 /kg, and h is in kJ/kg.
A gas turbine receives a mixture having the following molar analysis: 10% CO2, 19% H2O, 71% N2 at 720 K, 0.35 MPa and a volumetric flow rate of 3.2 m3 /s. The mixture exits the turbine at 380 K, 0.11 MPa. For adiabatic operation with negligible kinet..
Air enters a window air conditioner at 1 atm, 32C, 70% relative humidity at a rate of 2 m^3/min, and it leaves as saturated air at 15C. Part of the moisture in the air that condenses during the process is also removed at 15C. Determine the rates of h..
What are the inputs to the CRP process? Where is this information obtained?
A certain power station produces an electrical output of 700 MW, operating at 42% efficiency. This plant uses a closed-circuit "dry" cooling system in which heat is expelled by cycling the cooling water through pipes which are in direct contact with ..
the open water tank is resting on a frictionless plane. the capped orifice on the side has a 4-cm diameter exit pipe
Detemine if the ball bounces down the steps without skipping any step and if the ball bounces down the steps without bouncing twice on the same step.
a solid cylinder of radius r and mass m is initally at rest on the bed of a truck. the distance from the center of the
A steam power plant operates on the ideal reheat Rankine cycle. Steam enters the high pressure turbine at 6 MPa and 4000C and leaves at 2 MPa. Steam is then reheated at constant pressure to 4000C before it expands to 20 kPa in the low pressure turbin..
Suppose a system employs devices that are each capable of storing a list of 50 CRL entries. How can this design decision lead to security problems?
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