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Consider a Rankine cycle with saturated steam leaving the boiler at a pressure of 2 MPa and a condenser pres- sure of 10 kPa.
(a) Calculate the thermal efficiency of the ideal Rankine cycle for these operating conditions.
(b) If the net reversible work for the cycle is 0.5 MW, calculate the required flow rate of cooling water supplied to the condenser at 15°C with an allow- able temperature rise of 10°C.
(c) Design a shell-and-tube heat exchanger (one-shell, multiple-tube passes) that will meet the heat rate and temperature conditions required of the con- denser. Your design should specify the number of tubes and their diameter and length.
Calculate the applied bending moment on a 60 mm x 160 mm rectangular beam with a maximum bending stress of 20,000 kPa.
One kilogram of air as an ideal gas executes a Carnot power cycle having a thermal efficiency 50%. The heat transfer to the air during isothermal expansion is 50 kJ. At the end of the isothermal expansion, the pressure is 574 kPa and the volume is..
Water initially exists as a saturated liquid at 186oC is contained in a piston-cylinder assembly. The water undergoes a process to the corresponding saturated vapor state, during which the piston moves freely in the cylinder. There is no heat transfe..
a small 110-g particle is projected with a horizontal velocity of 2ms into a the top a of the smooth circular guide
In order for a dc motor to function properly, it must be protected from physical damage during the starting period. At starting conditions, the motor is not turning, and so EA = 0V. Since the internal resistance of a normal DC motor is very low, a..
rod bde is partially guided by a roller at d which moves in a vertical track. knowing that the instant shown the
To solve ax = b Find a number y such that ay is integer (and possibly a factor of b) Then if k Ay = b, the answer is ky What is the concept they understood?
an interior well is producing from a reservoir developed on a 40-acre square pattern which has the following
determine the electrical power input to the pump. the density of water is 1kg/l.
Find the maximum areaof a rectangle inscribed in a isosceles triangle with base 40 cm and height 30 cm. Justify that what you got is an absolute maximum.
A 25-kg block of copper at initial temperature of 1500C equilibrates with 0.79 kg of liquid water at an initial temperature of 200C in an insulated tank. If the average specific heat of copper can be taken to be 0.395 kJ/kg.K, determine the final tem..
an open gas turbine is equipped with a regenerator. the compressor is 87nbspefficient with air entering the compressor
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