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A certain fluid at 10 bar is contained in a cylinder behind a piston, the initial volume being 0.05 m3. Calculate the work done by the fluid when it expands reversibly, (a) At constant pressure to final volume of 0.2 m3 ; (b) According to linear law to final volume of 0.2 m3 and a final pressure of 2 bar ; (c) According to a law pV = constant to a final volume of 0.1 m3 ; (d) According to law pV3 = constant to a final volume of 0.06 m3. Sketch all processes on p-V diagram. [Ans.150000 ; 90000 ; 34700 ; 7640 Nm]
air at 5 bar 500 k and a volumetric flow rate of 8 m3s enters an insulated turbine operating at steady and exits with a
A turbine receives air at 1500 K, 1000 kPa and expands it to 100 kPa. The turbine has an isentropic efficiency of 85%. Find the actual turbine exit air temperature and the specific entropy increase in the actual turbine.
A fan that can provide air speeds up to 50 m/s is to be used in a low-speed wind tunnel with atmospheric air at 25°C. If one wishes to use the wind tunnel to study flat-plate boundary layer behaviour up to Reynolds numbers of Rex = 10^8 , what is the..
a 6 lb collar is constrained to travel along a frictionless vertical ring of r3 ft. the spring is attached to the
an air compressor operates at steady state with air entering at p11 bar t1 17 c and exiting at p25 bar. the air
Volumetric Compression Ration and Mean Effective Pressure of a Diesel Engine, A diesel engine has air before compression at 280 K and 85 Kpa. The highest temperature is 2219 K and the highest pressure is 6 MPa.
a 3-diameter 5-long gas-piston assembly contains air at stp. stp standard temperature and pressure conditions 300k and
a rigid tank is filled with refrigerant r-134a at 310 k. an electric current of 0.2 amps over 220 volts is passed
Propane gas (C3H8) at 25C, 1 atm enters an insulated reactor operating at steady state and burns completely with air entering at 25C, 1atm. Plot the adiabatic flame temperature versus percent of theoretical air ranging from 100 to 400%. Why does the ..
A 7 kg cylinder is attached to a series of two springs in the attached illustration. If the cylinder is released from rest - when the springs are both un-stretched - determine the maximum stretch in each spring.
The system acetone (1) and methanol(2) is well represented by the one parameter Margules equation using A = 0.605 at 50 degrees C. a) What is bubble pressure for an equimolar mixture at 30 C?
the combustion products in an internal combustion engine undergo an expansion process from an initial volume of 0.007
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