Boiling - condensation - evapoaration

(See attached file for full problem description) Prescribed textbook : Heat Transfer by A.F.Mills - 1999- Prentice Hall Other recommended textbook: Fundamentals of Heat and Mass Transfer by Incropera and De Witt Please solve all problems and show all calculations. Attached are some notes which have equations and sections that are referred to in the problems as well as some extra information.

Heat Transfer

(See attached file for full problem descriptions)

Ideal Gas Law, calculating Work, heat transfer

1. Air is compressed adiabatically from P1 = 100 kPa, T1 = 300 K to P2 = 1.5 MPa, ν2 = 0.1227 m3/kg. The air is then cooled at constant volume to T3 = 300 K. Assuming ideal gas behavior, and ignoring kinetic and potential energy effects, calculate the work for the first process and the heat transfer for the second process, each in kJ/kg of air. Solve the problem each of two ways: a. Using data from Table A-21 (Table A-21 is the Ideal-gas properties of air) b. Using a constant specific heat evaluated at 300K

Refrigerant R-134a vapor in a piston-cylinder assembly undergoes

Refrigerant R-134a vapor in a piston-cylinder assembly undergoes a constant-pressure process from saturated vapor at 800 kPa to 50 ºC. For the refrigerant, determine the work and the heat transfer, per unit mass (each in kJ/kg). Changes in kinetic and potential energy are negligible.

Steam enters a turbine operating at steady-state at

Steam enters a turbine operating at steady-state at 700 ºF and 600 lbf/in2 and leaves at 0.6 lbf/in2 with a quality of 90%. The turbine develops 12,000 hp, and heat transfer from the turbine to the surroundings occurs at a rate of 2.5x106 Btu/h. Neglecting kinetic and potential energy changes from inlet to exit, determine the mass flow rate of the steam, in lbm/h.