Chapter 9, Problem 9.73P

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

A complex flow system expands helium from 1500 K, 1000 kPa to 500 K, 100 kPa. In the process this produces 4595 kJ/kg of work. The process exchanges heat with a reservoir at TR. If the process is reversible, find the unknown reservoir temperature (K). You can work this with either Thermofluids or the equations... Your choice. If equations, Cp=5.19 kJ/kg-K, Cv=3.12 kJ/kg-K, R=2.08 kJ/kg-K. Helium 1500 K 1000 kPa TR q 500 K 100 kPa W=4595 kJ/kg

Thermodynamics Please clear writing! Take your time all I want is the correct answer

Please be very detailed

An isentropic turbine process 5kg/s of steam at 4MPa, which is exhausted at 50kPa and 100 C. Five percent pf this flow is diverted for feedwater heating at 700kPa. Find the power produced by the turbine.

3) A steam with a quality of 49%, enters an adiabatic nozzle at 3.5 MPa and leaves at 0.4 MPa and 140°C with a flow of 7 m/s. Find the entrance velocity, in m/s.

7.134E R-134a at 90 F, 125 psia is throttled in a steady flow to a lower pressure, so it comes out at 10 F. What is the specific entropy generation?

Air in an ideal diesel is compresses from 8 liters to 0.15 and then expands during the constant pressure heat addition process to 0.3 L. Under cold air standard conditions, find the thermal efficiency.

H.w: nitrogen gas flows into a convergent nozzle at 200 kpa,400 K and very low velocity .it flows out of the nozzle at 100 kpa.330 K.ifthe nozzle is insulated find the exit velocity .C, for nitrogen -1.042