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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 50kg lid is placed on a 20cm diameter container to form a crude pressure vessel. the initial pressure is 1 atm and
10 kg of water in a piston cylinder exists as a saturated mixture at 120 kpa with quality 40. the water is now heated
the refrigerator steadily receives a power input of 0.15 kw while rejecting energy by heat transfer to the surroundings
a pump raises the pressure of water from 100 kpa to 900 kpa and raises the velocity from 1 ms to 20 ms. the flow rate
a 2-2-2 kinematic coupling uses 19-mm silicon nitride balls and tungsten carbide vees. determine the hertz contact
a pitot-static tube measures the stagnation and static pressure of air at 8.5 and 1.5 of h2o respectively. what is the
an in-line tube bank is constructed of 1 inch diameter tubes with 15 rows transverse to the flow 7 rows in the floe
in this piston-cylinder device d1 20 cm-diameter d2 10 cm-diameter and the initial volume of chamber 2 is 0.1 m3.
Derive an expression for the bounding energy Eo in terms of the equilibrium interionic separation ro and the constants D, and p using the following procedure
a steady-flow compressor is used to compress helium from 15 psia and 70of at the inlet to 200 psia and 600of at the
A hydraulic cylinder is 100mm diameter and is fed by a pipe 15mm in diameter. If the piston in the cylinder moves forward at a rate of 0.2ms^1
ten kilograms of ice at 260 k is dumped into 20 kg of liquid water initially at 300 k in an insulated container. the
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