Chapter 9, Problem 9.96P

Cogeneration is often used where a steam supply is needed for industrial process energy. Assume a supply of 5 kg/s steam at 0.5 MPa is needed. Rather than generating this from a pump and boiler, the setup in below. is used so the supply is extracted from the high-pressure turbine. Find the power the turbine now cogenerates in this process. 2 3 HP LP

A power plant operating in a Reheat Rankine Cycle produces steam at 3 MPa, 600oC in the boiler. It keeps the condenser at 45oC by transfer of 10 MW out as heat transfer. The first turbine section (high-pressure) expands to 500 kPa and then flow is reheated followed by the expansion in the low-pressure turbine. Provide a detailed solution. Avoid shortcuts. Solve for the High-Pressure and Low-Pressure Turbines work output (kJ/kg)

regenerative steam turbine has a throttle pressure of 3.8 MPa at 380 °C and a condenser pressure of 0.1 MPa. Steam are extracted at the following ponts: 2 MPa, 1 MPa, and at 0.2 MPa. For the ideal cycle, find the thermal efficiency.

A Steam power plant uses a Rankine cycle to produce electrical power. The boiler pressure is 2 MPa and the temperature at the turbine inlet is 300C. The pump inlet pressure is 0.025 MPa and the entropy is 0.8931 kJ/kg-k. The turbine gives 1MW of work to the generator. Find the dryness of the steam at turbine exit, Wp, Qa, Qr, Wt, Wnet, efficiency, SR, and mass flow rate of steam. (84.65%, 2.0143 kJ/kg, 2749.56 kJ/kg, 1986.15 kJ/kg, 765.42 kJ/kg, 763.41 kJ/kg, 27.76%, 4.7157 kg/kWh, 1.3064 kg/s) -Draw the T-S diagram with properly labelled points and solve the problems. Show your COMPLETE solution - Use the Steam Table provided if necessary.

See photo below

A simple Rankine cycle works between pressures of 28 bar and 0.06 bar. The initial condition of the steamit is saturated. Calculate: a. Efficiency of the cycle b. Ratio of net work to the work of theturbine c. Specific consumption of steam in kg/kWh

2. A reverse Carnot cycle requires 3 hp and extracts energy from the laketo heat a house .If the house is kept at 70°Fand requires 2110 kj/min... what is the temperature of the lake?

A power plant operating in a Reheat Rankine Cycle produces steam at 3 MPa, 600oC in the boiler. It keeps the condenser at 45oC by transfer of 10 MW out as heat transfer. The first turbine section (high-pressure) expands to 500 kPa and then flow is reheated followed by the expansion in the low-pressure turbine. Provide a detailed solution. Avoid shortcuts. Show how much is the net power output (kW)

In a certain steam plant the turbine develops 703.72 kJ/kg. The heat supplied to the steam in the boiler is 2800 kJ/kg, the heat rejected by the steam to the cooling water in he condenser is 2100 kJ/kg and the network of the cycle is -995 kW. Calculate the pump work in kJ/kg and steam flow rate.