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Refrigerant-134a enters an adiabatic compressor as saturated vapor at 160 kPa at a rate of 2 m3/min and is compressed to a pressure of 900 kPa. Determine the minimum power that must be supplied to the compressor.
a steady flow compressor is used to compress helium from 100 kpa and 20 degrees celcius at the inlet to 1400 kpa and
carbon dioxide enters a two-stage compressor at 100 kpa and 300c and is compressed to a final pressure of 650 kpa. the
Knowing that crank AB rotates about point A with a constant angular velocity of 900 rpm clockwise, determine the acceleration of the piston P when θ = 120°.
the flow rate of liquid metal into the downsprue of a mold 1 ls. the cross-sectional area at the top of the sprue 800
Super-heated water steam at 6 MPa and 400C enters a turbine with a velocity 50 m/s. It leaves the turbine at 70 kPa and 90% quality with a velocity of 200 m/s. The mass flow rate of steam is 20 kg/s. The rate of heat loss from turbine to surroundings..
Describe what a riser is in the context of sand casting. What are its main functions? In light of Chvorinovs rule, what should be taken into account when determining the geometry, dimension, and location of a riser in a sand casting mold?
water in 50 liter rigid container is initially at 500 kpa and 350c. as the result of heat transfer the water obtains
A Turbine develops 40,000KW power by running at a speed of 150 rpm at a head of 25 m. The discharge required is 150m^3/s. If the head of the turbine is reduced to 20 m. Predict the performance of turbine?
steam having pressure 4.0 mpa and temperature of 880 k enters the turbine installed in a power plant at the rate 500
A new cast iron pipe is 5 km long and 15 mm diameter is used to convey water at a rate of 0.0150m3s-1. Given the absolute roughness of the pipe is 0.26 mm, density of water is 998 kg/m3 and dynamic viscosity of water is 1.14 × 10-3 kgm 1s-1.
a recently negotiated union contract allows workers in a shipping department 24 minutes for rest 10 minutes for
Calculating temperature, water evaporation, and heat in a power plant cooling situation. In a nuclear power plant the cooling tower system must be run on a closed cycle.
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