Find mass flow rate of steam and rate of entropy generation
Steam enters a diffuser at 20 psia and 240oF with a velocity of 900 ft/s and exits as saturated vapor at 240oF and 100 ft/s. The exit area of the diffuser is 1 ft2. Determine (a) the mass flow rate of steam and (b) the rate of entropy generation.
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Water flows at 50oC inside a 2.5-cm-inside-diameter tube such that hi= 3500 W/m2 oC. The tube has a wall thickness of 0.8 mm with a thermal conductivity of 16 W/m2 oC. The outside of the tube loses heat by free convection with ho = 7.6 W/m2 oC.
What is the maximum allowable hole diameter? Assume Y = 1.4. Note, given more than one choice of material data, choose conservatively.
Two objects attract each other with a gravitational force of magnitude 9.2*10^-9 N when separated by 19.8cm. If the total mass of the object is 5.09kg, what is the mass of each?
Hot combustion gases enter a gas turbine at .8Mpa and 1500 K at a rate of 2.1 kg/s and exit at .1 Mpa and 800 K. If heat lost from the turbine to the surroundings at a rate of 150 kj/s find the power output of the gas turbine using constant and va
Steam enters a diffuser at 20 psia and 240oF with a velocity of 900 ft/s and exits as saturated vapor at 240oF and 100 ft/s. The exit area of the diffuser is 1 ft2.
A rigid tank whose volume is 0.5 m3, initially containing ammonia at 20oC, 1.5 bar, is connected by a valve to a large supply line carrying ammonia at 12 bar, 60oC.
How fast would you have to spin a single circular loop with a radius of 1cm to get the same voltage?
A manometer connected to the tap shows a head of 0.14 in. of mercury above atmospheric. Determine the approximate speed of the air leaving the nozzle if it is at 40°F and 14.7 psia.
A photon absorbed by an electron will give up more energy to the electron if the photon:
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