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Given that the average power plant produces 667 MW of electricity per year, there are 492 coal plants in the US, and a solar constant of 1.361 KW/m^2, how large of an area would one need to cover with solar cells to replace our dependence on coal with solar power. Use a real world efficiency of 12% and assume that the solar array will only produce electricity during half of the day(no power at night). Put your answer in equivalent Rhode Island areas.
a refrigeration cycle operates continuously and removes energy from the refrigerated space at a rate of 12000 btuh. the
the speed of the 3500-lb sports car is plotted over 30 s time period. plot the variation of the traction force f needed
a balloon behaves so the pressure is p c2v13 c2 100 kpam. the balloon is blown up with air from a starting volume of
an air-water-vapor mixture enters a cooler-dehumidifier at the rate of 1000 ft3min. the mixture enters at 14.7 psia
a closed rigid pressure vessel is filled with a saturated mixture of 1.78 kg of liquid water and 0.22 kg of water vapor
a gas within a piston-cylinder assembly undergoes a thermodynamic cylce consisting of three processes. process 1-2
a rankine cycle operates between pressure limits of 500 and 2 psia. the temperature of the steam entering the turbine
a pitot-static tube is used to measure the airspeed of an airplane. the pitot tube is connected to a pressure sensing
refrigerant 134a enters an adiabatic compressor as saturated vapor at 200kpa at a rate of 30 kgmin and is composed to a
there are supplied to a nozzle 2400 lbhr of steam at an absolute pressure of 200 psia. at the entrance v1 6000 ftmin
an ocean thermal energy conversion power plant generate 300 kw. determine the gpm of cold seawater to be pumped from
hot air at 800c is blown over a 2-m x 4-m flat surface at 300c. if the average convection heat transfer coefficient is
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