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The thermal efficiency of a reversible power cycle operating between hot and cold reservoirs is 20%. Evaluate the coefficient of performance of
a) a reversible refrigeration cycle operating between the same two reservoirs.
b) a reversible heat pump cycle operating between the same two reservoirs. State all assumptions
a single degree of freedom system has a concentrated mass weighing 38.6 lb. a spring constant of 22.5 lb.in. and a
a shaft is to be designed to support the spur pinion and helical gear shown in the figure on two bearings spaced 700 mm
A full revolution press has 100 rpm flywheel rotation. The press is equipped with tow hand trip devices mounted on the machine at a distance of 20 inches from the point of operation. How many engagement points on the flywheel would be necessary to ma..
Air enters a non-ideal gas turbine at T1 = 2290°F, P1 = 196 psia and exits at T2 = 1200°F, P2 = 14 psia. (a) Assuming constant specific heats evaluated at 1000F, find the turbine efficiency using the Air Tables.
a shaft is subjected to a maximum load of 10 kn. it is designed to withstand a load of 15 kn. if the maximum load
find the total heat loss per m length of the steam line. Find also the temperature at the interface of steam and insulation.
In a specific type of heat exchanger, a very hot jet of air is cooled from 145 degrees centigrade to 100 degrees centigrade by a cold stream of water. The water temperature must not rise By more than 12 degrees centigrade. Find 1.
a pot of 1 kg of liquid water is heated on a mountain top where the atmospheric pressure is 0.8 bar. if the liquid
discuss the similarities and differences between coulomb friction damping with the damper used in sdof
A steam power plant operates on the ideal reheat Rankine cycle. Steam enters the high pressure turbine at 6 MPa and 4000C and leaves at 2 MPa. Steam is then reheated at constant pressure to 4000C before it expands to 20 kPa in the low pressure turbin..
A 1 foot long cylindrical rod with a diameter of 0.25 inch is subjected to a tensile load of 1,500 lbs. Suppose the rod was elongated 0.01 inch under this load, what is the stress and strain created by the load? What is the Young’s Modulus of the mat..
we have a process air stream that is 30 mole dichloromethane and 70 air at 80 of. the inlet flow rate of the gas stream
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