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A horizontal hammermill shredder is to process 8 tons/hour of MSW to a characteristic size (x0) of 0.7 in. Estimate the required horsepower using the Bond work index method. Assume that the feed characteristic size is 4 in. and the particlesize distribution follows the Rosin Rammler model, with n 1. (Note: You will need log-log graph paper).
Determine the moment of inertia Ix of a circle of radius r with respect to a diameter (see Case 9, Appendix D).
one pound of nitrogen as an ideal gas expands isothermally at 70degf from a volume of 1 ft3 to a volume of 2 ft3.
at a amusement park there are 180kg bumper cars a b and c that have riders as shown with masses 40 kg 60kg and 30 kg
a system has an initial volume of 10 ft3 and expands to a final volume of 20 ft3. the initial pressure is 15 psia. find
A gas turbine power plant operates on the simple Brayton cycle between the pressure limits of 100 and 1600 kPa. The working fluid is air, which enters the compressor at 40 degrees Celsius and leaves at 650 degrees Celsius. Using constant specific hea..
a tungsten wire 0.005mm in dia and 2 mm in length is placed horizontal in stagnant air. if we need to maintain the wire
A desktop computer is to be cooled by a fan whose flow rate is 0.34 m3 /min. Determine the mass flow rate of air through the fan at an elevation on 3400 m, where the air density is 0.7 kg/m3. The diameter of the casing of the fan, if the average velo..
six kilograms of co2 executes at carnot cycle in a piston-cylinder assembly. the minimum and maximum gas temperatures
An air-cooled condenser is rated at 40 tons will be installed at an elevation of 5000 ft (1640 m) above sea level. The manufacturer advises a correction factor of 0.89 at an altitude of 5000 ft (1640 m). Determine the condenser rating at this elev..
The brass strip AB has been attached to a fixed support at A and rests on a rough support at B. Knowing that the coefficient of friction is 0.60 between the strip and the support at B, determine the decrease in temperature for which slipping will ..
a four cylinder spark ignition engine has a compression ratio of 10.5 and each cylinder has a maximum volume of 0.4 l.
Volunteer Pharmaceuticals (VP) wants to set aside money in the R&D fund to seek supplemental drug applications of its two newly developed drugs. Instead of putting away $780 million now, VP plans to set aside $A each year from year 1 through 40. What..
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