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A solar thermal engine operating between 20 degrees celsius and 200 degrees celsius has efficiency equal to one-half of the Carnot efficiency. This engine needs to provide 5 kW power to drive a water pump. If the collector can absorb 50 percent of the solar insolation falling on the collector surface, determine the required area of the solar collector for a location where the averaged solar insolation is 800 W/m2.
a boat is subject to hydrodynamic drag forces of f 40v2n where v is the magnitude of velocity in ms. the boats mass is
assuming a znd structure determine the key properties for the detonation wave described in problem 1. propagating
the picture below shows a system where superheated vapor enters a container at a flow rate of 90 kgs at 250c. the vapor
nbspmgh12mv212iomega21 show that ??v2 2gh1i where ? i imr2 and thus i is and hence the
a balloon behaves so the pressure is p c2v13 c2 100 kpam. the balloon is blown up with air from a starting volume of
a pump a steady state receives liquid water at 20 c and 100 kpa with a mass flow rate of 50 kgmin. the water exits the
methane is preheated to 80 c degree and is burned in 20 percent excess air that is preheated 200 c degree in a
a 15-mm od copper tube conveys hot hydraulic oil. in order to dissipate the heat and cool the oil someone suggests that
calculate the static thrust of the turbojet engine having mass flow 88lbmsec the ratio of air and fuel mass flowing
a petrol engine uses 204 kg of petrolh of calorific value 43 mjkg. the thermal efficiency of the engine is 20.
pressurized water pin 10 bar tin 110 deg c enters the bottom of an l 10-m-long vertical tube of diameter d 100 mm
calculate the critical heat flux on a large horizontal surface for the following fluids at 1 atm mercury ethanol and
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