Chapter 8, Problem 8.29P

This is an Ideal Rankine Cycle with "Open Feedwater Heater'. We are to analyze the system but the pressure entering the feedwater is not provided. The task is to select/choose an appropriate pressure value for the feedwater, which will then yield the best efficiency. I really need some help to get this done correctly. Thanks for your time.

In an ideal Rankine cycle the boiler pressure is 10 MPa. All components are operating at steady state and adiabatically. The steam enters the turbine at 550oC. The condenser pressure is 15 kPa. Determine the cycle efficiency.Find the entropy generation for the condenser for 6 kg/min mass flow rate of steam.   This is a Thermodynamics question. Please explain all steps and write nicely. Thanks.

In an ideal rankine cycle. Steam is generated at 4.1 mpa and 480c. The condenser is at 32c.Considering the engine only, assume the brake engine efficiency to be 78%, the generator efficiency 92%, the steam flow rate is 163,600 kg/hr. Compute the output of the combined unit.

Construct the ideal Rankine cycle with three stages of reheating on a T-s diagram. Assume the turbine inlet temperature is the same for all stages. Justify how does the cycle efficiency vary with the number of reheat stages.

Consider an ideal Rankine cycle with a boiler pressure at 4 MPa. For the turbine inlet temperature of 600°Cand the condenser exit temperature of 40°C. Calculate the quality of the steam at the turbine exit, x4 =  blank  Calculate the net power output of the plant for the unit mass flowrate (1 kg/s) of the steam in kW =  blank

A steam power plant operates between a boiler pressure of 58 bar and a condenser pressure of 0 05 bar Calculate for these limits the cycle efficiency for a Rankine cycle with dry saturated steam at entry to the turbine NB Answer in decimal and not percentage to 4 decimal places

Thermal efficiency of standard Otto cycle for a compression ratio 5.5 will be

n an ideal rankine cycle. Steam is generated at 4.1 mpa and 480C. The condenser is at 32C. For an engine with the same end states, determine its thermal efficiency, steam rate, and mep. Considering the engine only, assume the brake engine efficiency to be 78%, the generator efficiency 92%, the steam flow rate is 163,600 kg/hr. Compute the output of the combined unit.

A simple Rankine cycle with ideal components except the turbine is shown. Boiler exit temperature and pressure are 500°C and 4 MPa, respectively. Condenser pressure is 30 kPa. The isentropic efficiency of the turbine is 80% and the power generated by the turbine is 8 MW. Calculate the mass flow rate of the steam in kg/s.