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In a regenerative steam employing three closed feed heaters the steam is supplied to the turbine at 42 bar and 503 tt and is exhausted to the condenser at 0.035 bar. The bleed steam for feed heating is taken at pressures of 15. 4. and 0.5 bar. Assuming ideal processes and neglecting pump work, calculate:
(i) the fraction of the boiler steam bled at each stage;
(ii) the power output of the plant per unit mass flow rate of boiler steam;
(iii) the cycle efficiency.
Consider the torsion of a rod that is 1 m long and 50 mm in diameter. A. If one end of the rod were twisted by 1.2? relative to the other end, what would be the largest principal strain on the surface?
6 kg of an ideal gas is in a volume of 1 m3 at 250degc. the gas undergoes a constant pressure change of state until the
An air conditioner maintains the temperature of a dwelling at 72 degrees Fahrenheit when it is 96 degrees Fahrenheit outside. If heat is transferred through the walls and ceiling at 35,000 BTU/hr. a) What is the minimum power required to run the Air..
water is being pumped from a large lake to a reservoir 25m above at a rate of 25 ls by a 10kw shaft pump. if the
one mole of an ideal gas at t 25 degc is held in a cylinder by a piston at a pressure of 1 x 107 n m-2. the piston
Air at 12 psia and 60F enters the jet engine of an aircraft flying at a velocity of 500 ft/s. Inlet area of the engine is 4 ft2. Exhaust gases leave the engine with a relative velocity of 900 ft/s. The fuel flow rate is only 2% of the mass flow rate ..
the steel frame e200gpa shown has a diagonal brace bd with an area of 1920mm2. determine the largest allowable load p
the inner and outer surfaces of a 0.3 m thick 400?cm x 700?cm north wall of an electrically heated home are maintained
The velocity of a particle along the s-axis is given by v = 17s^3/2 where s is in millimetres and v is in millimetres per second. Determine the acceleration when s is 3.3 millimetres.
you have a heat engine that has a thermal energy resevoir available at 500c the thermal energy to heat the engine is at
to understand the physics of the o-ring we may need to start formulating the problem in a static equilibrium condition.
estimate the specific molar volumes in cm3mol using the peng-robinson equation of state for nitric oxide at 150 k
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