Chapter 8, Problem 8.50P

Solve with me time 50 minutes ..Calculate the ideal cycle efficiency and specific steam consumption (S.S.C.) of a regenerative eycle with triple extractions, as shown in Figure 1, with boiler outlet steam pressure and superheat steam temperature are 8 MPa and 500 °C, respectively, and condenser pressure 9.6 kPa. If the steam flowing through the turbine is 100 kg/s, also find the power output. Determine the heat rate of the turbine, which is defined as "the heat required at the turbine inlet per unit of power generated." (Assume the turbine extraction bleed steam pressures such that temperature difference between T, and T, is approximately equally divided. Neglect work input to boiler feed pump. Also assume that on completion of regenerative feed heating, the enthalpies of both the compressed feedwater and condensed steam are equal to the enthalpies of the saturated liquid corresponding to the respective extraction bleed steam pressures

A 300 MW steam power plant, according to the simple ideal Rankine cycle references Water vapor enters the turbine at a pressure of 10 MPa and a temperature of 500°C; 10 KPA expands to condenser pressure.Isanthropic of turbine and pumpaccording to the efficiency of 85%, the degree of dryness of steam at the turbine output, find the thermal efficiency of the cycle and the mass flow of water vapor circulating in the cycle.

A four-stroke gasoline engine has a compression ratio of 10:1 with 4 cylinders of total displacement 2.3 L. the inlet state is 290 K, 90 kPa and the engine is running at 2400 RPM with the fuel adding 1500 kJ/kg in the combustion process. What is the network in the cycle and how much power is produced?

Show given, complete solution, and diagram.  A steam power plant operates on the Rankine Cycle. The steam enters the turbine at 7 Mpa and 550 with a velocity of 30 m/s. It discharges to the condenser at 20kpa with a velocity at 90 m/s. Calculate the net workin kw for a flow of 37.8kg/s.  a. 23.23 Mw       c. 34.22 Mw b. 53.34  Mw     d. 46.54 Mw

Problem 3. A simplified Rankine cycle and some data are given in the figure below. a. Show the process in a TS diagram b. Calculate the rate of heat addition (QH) to the boiler. c. Calculate Wpump- d. Calculate |WNet|- e. Determine the thermal efficiency (n.)

Example 4.5: Stem expands in a turbine from 25 bar and 300°C to a condenser pressare of 20 KPa. Evaluate the Rankine cycle efficiency. What is the efficiency if the initial tempprature of steam is 500°C instead of 300°C ? Now if the boiler pressure is increased to 60 bar maintaining the steam temperature at turbine inlet at 500°C, calculate the efficiency. Assume the condenser pressure to rmain constant in all the cases. n-25 bar

In a Steam Power Plant steam enters the turbine at 6 bar and 400 C and is expanded isentropic ally to the condenser pressure of 0.1 bar. Find the condition of the exhaust steam and determine the cycle efficiency.

1.4 A diesel engine operating an air standard diesel cycle has 20cm bore and 30cm stroke. the clearance volume is 420cm3. if the fuel is injected at 5% of the stroke, find the air standard efficiency. 1.5 Develop an expression for the thermal efficiency of the air-standard diesel cycle as a function of the compression ratio r. = V1V2 and the expansion ratio r, = V4 / V3. Assume the working fluid is an ideal gas, and the volume effect of moles of gas generated is small relative to the effect of heating from combustion. %3D

4. An air standard Diesel cycle has a compression ratio of 18. At the beginning of the compression process, air is at 100 kPa and 15°C. If the mean effective pressure is 1362 kPa and the heat of combustion is 1800 kJ/kg, find the thermal efficiency.