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Design a battery electric storage system for a power plant with 20 MW peak power delivery for a duration of 4 h and estimate the minimum number of batteries and the current during peak operation. Assume that the plant will use 600 A/h batteries, operating at 400 V DC.
10.0 kgm of air is contained in a cylinder by a free-floating frictionless piston. initially the air is at 27 c and
Consider a one-dimensional plane wall at a uniform initial temperature Ti. The wall is 10 mm thick, and has a thermal diffusivity of 6 x 10^-7 m2/s. The left face is insulated, and suddenly the right face is lowered to a temperature Ts,r.
saturated vapor steam at 5 psia eneters an adiabatic heat exchanger and leaves as saturated liquid at 5 psia. the steam
determine the velocity of its center when it reaches the end of the bowling lane.The ball is always in contact with the bowling lane during its motion. the bowling ball may be assumed to be a uniform solid sphere with a mass of 7 kg and diameter o..
the water in a 8m diameter 3m high above ground swimming pool is to be emptied by unplugging a 3cm diameter 25m long
a combined gas-vapor power plant operates as shown in fig.9.94. pressure and temperature data are given at principal
an aircraft engine is fitted with a single-sided centrifugal compressor. the aircraft flies with a speed of 230 ms at
a racing boat planes over the water at 80 mph. the water temperature is 75f. the wetted surface of the boat i.e. the
Assume that the neck is relaxed so that no moment is applied to the head at O.
Determine the change in entropy for the following: Water, u=1000 kJ/kg, T=140 degree C to saturated liquid at p=3 bar. Air, T(1)= 500 degrees R, p(1)= 10 lbf/in^2 to T(2)= 900 degrees R, p(2)= 50lbf/in^2 (using air property tables and specific heat m..
Air at 17oC and 200kPa is in a rigid, 2m3, insulated tank that has a paddle wheel in it. 733 kJ of work is put into the system by the paddle wheel. How much entropy is produced?
If you need other functions, you will have to show their implementations. Be sure to include the software that maps unsigned ADC (0 to 1023) into a signed fixed point (resolution you choose in part c). Include the output-compare 5 initialization a..
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