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A cycle is proposed as a development of the Lenoir cycle, in which the working fluid is expanded isentropically from its peak pressure down to a point where its temperature is equal to T1, the initial temperature. The gas is then compressed isothermally back to the initial pressure. Prove that the thermal efficiency of the cycle is given by
where T2 is the maximum temperature achieved in the cycle.
Calculate the thermal efficiency of the cycle if the initial pressure is 10 bar and the maximum pressure is 35 bar. Compare this to the Carnot efficiency achievable between the temperature limits and explain why this cycle would not be used in practice.[49.9%; 71.4%]
a saturated-liquid mixture of benzene and toluene containing 50 mol benzene is distilled in an apparatus consisting of
A stream of gas flowing at 15,000 scfm contains 20 ppm of toluene. Assuming the process operates 8500 hours per year, calculate the potential emissions of toluene, tons/year. What kind of a system should be considered to control this stream, and why?
The permeability in the reservoir is a constant 200 mD. The pressure in the reservoir is 3000 psi. The reservoir is 100 m thick. A 6-inch well is drilled through the reservoir, which has two effects. First, the rock within 5 ft of the well is damaged..
consider the annulus formed between a rod of radius r0 and a tube of radius r1. find the velocity profile for couette
It is proposed to build a one million kW electric power plant with steam as the working fluid. The condensers are to be cooled with river water at a flow rate of 5 x 108 lbm/hr. The maximum steam temperature will be 1000 F and the pressure in the con..
six chemical species are present in significant amounts in a light-ends petroleum fractionation system methane ethane
Calculate the range of typical machining time for face milling a 10-in. long, 2-in. wide cutter with a depth of cut of 0.1-in , the cutter has 10 teeth .for the following work piece materials :1.low-carbon steel 2.titanium alloys 3.alumminum alloys
What maximum thickness of aluminum foil could be used to fabricate the windows if no more than 3.5% of the radiation is to be absorbed by them?
a 10 kw electric heater is used to heat 2 kg of air contained in an insulated rigid tank from 400 kpa and 50 degc to
a ball is tossed from an upper-story window of a building. the ball is given an initial velocity of 8.20 ms at an angle
a 12-mm diameter jet of water discharges vertically into the atmosphere. due to surface tension the pressure inside the
Compute the force P required to slide the door at a steady speed if wheel A becomes "frozen" and does not turn in its bearing.
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