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A gas contained within a piston-cylinder assembly undergoes three processes in series: Process 1-2: Constant volume from state 1 where p1 = 1 bar, V1 = 4 m3 to state 2, where p2 = 2 bar. Process 2-3: Compression to V3 = 2 m3, during which the pressure-volume relationship is pV=const. Process 3-4: Constant pressure to state 4, where V4 = 1m3 Sketch the processes in series on p-V coordinates and evaluate the work on each process, in kJ.
determine the optimal pressures, temperatures, and fraction of steam extracted to maximize thermal efficiency.
As shown, a 130 lb bungee jumper wants to jump from the top of a 655 ft high bridge and be able to just touch the water below. Given that the bungee cord has a spring constant of 2.33 lb/ft, what should the bungee cord's relaxed length, l, be for ..
water vapor at 5 bar. 320 degree c enters a turbine operating at steady state with a mass flow rate of 1.5 kgs and
A balloon behaves so the pressure is P = C2V1/3, C2 = 100 kPa/m. The balloon is blown up with air from a starting volume of 1 m3 to a volume of 3 m3. Find the final mass of air assuming it is at 25oC and the work done by the air.
an air-conditioner with refrigerant -134a as the working fluid is used to keep a room at 26 celsius by rejecting the
water starts at a temperature of 19 degrees celcius and is then boiled until it is a superheated steam at temperature
The Brayton cycle shown in figure 6.41 operates using CO2 as a working fluid with compressor and turbine isentropic efficiencies of 1.0. Calculate the thermal efficiency of this cycle when the working fluid is modeled.
helium at 810 r 45 ibfin2 and a velovity of 10 fts enters an insulated nozzle operating at steady state and exits at
on a cold winters day it is 30degf outside. yet the temperature of the outside surface of the mechanical engineering
the general ledger of the fly-by-night fbn engineering company contained the following account balances.administrative
assuming that steam can be treated as an ideal gas what would the specific volume of steam be at 600deg f and 120 psia
a team of astronomers have proposed io construct a large parabolic telescope mirror by spinning a cylindrical container
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