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A large pump delivering 1.2 m3 /s of water with a pressure rise of 400 kPa is needed for a particular hydroelectric power plant. A proposed design change is tested on a smaller 1:4 scale pump. Estimate the flow rate and pressure rise which would be expected in the model study. If the power needed to operate the model pump is measured to be 8000 kW, what power would be expected to operate the prototype pump.
A 1200 MW power plant has a thermal efficiency of 39%. Find: (a) the rate of heat addition to the cycle (b) the rate of heat rejection from the condenser [(a) 1.05 x 10^10 Btu/hr; (b) 6.4 x 10^9 Btu/hr]
Carbon fibre reinforced polymers (CFRP have been used extensively in aerospace applications due to their excellent strength to weight and stiffness to weight properties.
A 2.64 kg copper part, initially at 400 K, is plunged into a tank containing 4 kg of liquid water, initially at 300 K. The copper part and water can be modeled as incompressible with specific heats of 0.385 kJ/kg. K and 4.2 kJ/kg.K, respectively. For..
Steam enters a turbine at 40 bar and 400 degree C, at a velocity of 200m/s and exits at 36.2 degree C as saturated vapor, at a velocity of 100 m/s. If the turbine work output is 600 kj/kg,
it is desired to study the effect of turbine inlet temperature on the performance of an ideal steam rankine cycle.
strarting from x 0 with no initial velocity a particle is given an acceleration a 0.1 squere root v216 where a
Problem: Find the Shear Stress. How do you find the y bar value of the hollow shaft? How did they arrive at that formula?
consider water as the substance at 30 bar and 450c.a calculate specific volume m3kg using ideal gas equation of state.b
The streamlines in a certain incompressible, two-dimensional flow field are all concentric circles so that vr=0. Determine the string function for 1) V(theta)=Ar and for 2) V(theta)= Ar^(-1) where A is a constant in both cases. Use cylindrical coordi..
An oil pump is being driven by the shaft of an electric motor. The motor consumes 44 kW of power while pumping the oil – having a density of 0.860 g/cm3 – at a rate of 0.1 m3/s.
Ten grams of computer chips with a specific heat of 0.3 kJ/kg dot K are initially at 15 degrees C. These chips are cooled by placement in 5 grams of saturated liquid R134a at -38 degrees C.
a cylindrical stone mix concrete beam of diameter d 0.45 initially at ti 20c is exposed to hot gases at tinfinity
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