Chapter 8, Problem 8.89P

I do not understand the chapter in general. May you please explain why you completed each step as you have. Thank you.

A steam turbine has an inlet of 2 kg/s water at 1000 kPa, 350°C and velocity of 15 m/s. The exit is at 100 kPa, x = 1 and very low velocity. Find the specific work and the power produced.

1. In a Regenerative cycle, the steam is extracted from the turbine at 2 Mpa and 250C for feedwater heating and it is mixed with condenser exit at 30 kpa after pumping. Find the fraction of vapor extracted from the turbine.

4. Air at a temperature of 500 0C is compressed at a constant pressure of 1.2MPa from a volume of 2 m3 to a volume of 0.4m3 . If the initial internal energy decrease is 4820 KJ, find a. The work done during the reversible compression b. The heat transferred c. The change of enthalpy d. The average specific heat at constant pressure

A steam turbine receives 5,000 kg/hr of steam at 5 Mpa and 4000C and velocity of 25 m/sec. It leaves the turbine at 0.006 Mpa and 85% quality and velocity of 20 m/sec. Radiation loss is 10,000 kJ/hr. Find the Kw developed.

Water at 50°C is cooled in a cooling tower which has an efficiency of 65%. The temperature of the surrounding air is 35°C dry bulb and 70% relative humidity. The heat dissipated from the condenser is 2,000,000kJ/hr. Find the capacity in liters per second of the pump used in the cooling tower.

If the mass flow rate for air is 5 Kg/s .and air compressor takes in air at 200 kPa, 290 K and delivers it at 1.2 MPa, 600 K to a constant-pressure cooler, which it exits at 300 K. Take cp= 1.005 find 1- temperature exit for compressor is A- 290 K       B- 600 K       C - 300 K 2- work specific compressor is A- ( -211.55)       B- ( -311.55)       C- ( -411.55) 3- Specific heat transfer in the cooler is A- 301.5       B- 310.5       C- 320.5 4- Power the compressor is A- 1575.75       B- 1585.75       C- 1895.75

A geothermal powerplant uses steam that enters  a nozzle @ 973.15 K at 300 kpa under a velocity of having 20 m/sec, such that the steam exits at  200 kpa. The operator provides the process that is adiabatic and reversible. Calculate the ff. a. going out velocity of steam b. the going out temperature c. the sp. enthalpy at going out.

Please be very detailed