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A steam power plant implements an ideal reheat Rankine cycle. Steam enters the inlet of the high-pressure turbine at 8 MPa and 450 °C and the inlet of the low-pressure turbine at 0.5 MPa and 500 °C. The condenser operates at 10 kPa. Determine:
(a) the mass flow rate through the boiler needed for this system to produce a net 5000 kW of power and
(b) the thermal efficiency of the cycle.
a 600 mw coal-fired power plant has an overall thermal efficiency of 38. it is burning coal that has a heating value of
The humidity of air can be determined by use of two different thermometers; a 'dry bulb' thermometer and a 'wet bulb' thermometer. explain how these thermometers can be used to estimate the amount of water vapour in the air.
(i) Name any incongruent melting intermediate compound(s) present. (j) Locate and draw a square around all congruent melting equilibria. (k) Label all the two-phase fields. (l) Is either Ti or Ni allotropic?
Two control rods are attached at A to lever AB. Using trigonometry and knowing that force in the right-hand rod is F2=20 lb, determine a.) the required force F1 in the left-hand rod if the resultant R of the forces exerted by the rods on the le..
Calculating the mechanical properties of unidirectionally reinforced composites
What is the communication time if the local conditions limit spacecraft visibility to elevation angles larger than = 18 degrees?
What is the packing density
solid carbon reacts with steam to produce carbon monoxide and hydrogen. given an hc atom ratio of 11 and an oc atom
1. the adiabatic compressor of a large gas turbine receives air from the ambient surroundings at 95 kpa and 20degc
water at 80f is flowing from a to b in a 3-in coated ductile iron pipe. point b is 20ft higher than a and the total
a 1-m3 rigid tank initially contains air at 150 kpa 300 k. the tank is connected through a valve to a supply line at
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.
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