Design a steam power plant that works as an ideal Regenerative Rankine cycle with 2 closed feedwater heaters cascaded backwards by selecting their extraction pressures to optimize cycle efficiency. The available steam conditions at the exit of the boiler are 3 MPa and 590 °C and the condenser pressure is 20 kPa. The steam flow rate at the inlet of the turbine is 80 kg/s. A T-s diagram for the cycle should be provided along with a table showing the pressure, temperature, enthalpy and entropy of all the states at the optimized point. Also, mention the net power output and rate of heat rejected from the cycle as well as the fractions of the working fluid extracted for each feedwater heaters at the design point.

Air enters a turbine operating at steady state at 10 bar, 1200 K and expands to 0.8 bar. The turbine is well insulated, and kinetic and potential energy effects can be neglected. Assuming ideal gas behavior for the air, what is the maximum theoretical work that could be developed by the turbine in kJ per kg of air flow?

A jet propulsion engine has an air that enter the compressor at 100 kPa and 290K. The pressure ratio across the compressor is 14 and the turbine inlet temperature is 1500K. When the air leaves the turbine, it enters the nozzle and expands to 100kPa. Determine the pressure at the nozzle inlet and the velocity of the air leaving the nozzle

Important notes: Please be neat and write legibly, it’s important that I understand your writing and follow your thoughts. And write what tables you are using and solving every step with fully details and from which tables you got the numbers please solve it clearly

Write a project which study steady state conduction in series /parallel configuration such as are used in conventional residential constryuction .This includes analysis of the walls ,windows,doors and cieling .

Also calculate energy saving for it by using modern cumputer tools .

In an air standard Otto cycle, the maximum and minimum temperatures are 1400 and 15?C. The heat supplied per kilogram of air is 800 kJ. Calculate the compression ratio and the cycle efficiency. Calculate also the ratio of maximum to minimum pressures in the cycle.

ANSWERS(5.24/1; 48.5%; 30.42/1

A four-cylinder petrol engine has a swept volume of 2000 cm3, and the clearance volume in each cylinder is 60 cm3. Calculate the air standard cycle efficiency. If the introduction conditions are 1 bar and 24 ?C, and the maximum cycle temperature is 1400 ?C, calculate the mean effective pressure based on the air standard cycle.

ANSWERS(59.1%; 5.30 bar)

In a dual-combustion cycle, the maximum temperature is 2000 ?C and the maximum pressure is 70 bar. Calculate the cycle efficiency and the mean effective pressure when the pressure and temperature at the start of compression are 1 bar and 17 ?C, respectively. The compression ratio is 18/1.

ANSWERS(63.7%; 10.54 bar)

The engine of problem 10 is supplied with a mixture of gas and air in the proportion of 1 to 7 by volume. The estimated volumetric efficiency is 85 % and the Qnet,p of the gas is 38.6 MJ/m3. Calculate the brake thermal efficiency of the engine.

ANSWER (27.4 %)

The upper end of a vertical steel wire 4mm diameter and 2,5 m long is held securely. The other end is fixed central to a steel cylinder, 80 mm diameter and of density 7,8 Mg/m3, arranged with its axis vertically. Determine the length of the cylinder to give 0,6 torsional vibration per second.

Describe the Rockwell hardness test. Include information on the indenter type, loading conditions and quantities measured.

Describe how an Izod impact test of a polymer specimen is performed. What does the test measure?

estimate the microstructural properties (ferrite, pealite, bainite. martensite) from CCT tables. Estimated cooling time of 2900 seconds with vickers hardness value of 286

A 10-kg block A is released from rest 2 m above the 5-kg plate P, which can slide freely along the smooth vertical guides BC and DE. Determine the velocity of the block and plate just after impact. The coefficient of restitution between the block and the plate is e = 0.75. Also, find the maximum compression of the spring due to impact.The spring has an unstretched length of 600 mm

The spring with the 5 kg plate are stationary before impact at 450mm. The 600mm unstretch length of the spring is without the 5 kg plate.

Describe how Aluminium can corrode or degradein Aircraft Fuselage.

And methods for avoid degradation in Aircraft Fuselage.