Question

In: Mechanical Engineering

Consider a steam power plant operating on the simple ideal Rankine cycle. Steam enters the turbine...

Consider a steam power plant operating on the simple ideal Rankine cycle. Steam enters the turbine at 15 MPa and 600°C. The steam condenses in the condenser at 10 kPa. Use the EES software to study the effects of the following cases on the cycle performance and to sketch the T-s diagram for each case:

Plot the variation of the cycle thermal efficiency with the turbine isentropic efficiency. Take the isentropic efficiency of the turbine in the range 70% to 100%.

If the cycle is modified to the ideal reheat Rankine cycle with the same pressure limits and same maximum temperature, Plot the variation of the steam quality at the turbine exit and the thermal efficiency with the reheat pressure. Take the range of the reheat pressure from 3 to 8 MPa.

If the cycle is modified to the ideal regenerative Rankine cycle with the same pressure limits and same maximum temperature, plot the variation of the thermal efficiency with the extraction (bleeding) pressure ranging from 1 to 3 MPa, with a step of 0.5 MPa.

The heat is supplied to the boiler from a heat source (e.g. furnace) of a constant temperature. For the same pressure limits and same maximum temperature of the cycle, plot the variation of the second law efficiency with the heat source temperature ranging from 700 to 1200 K. In addition, show the variations of the exergy destroyed in each component of the cycle (boiler, turbine, condenser, pump) with the heat source temperature and identify the rooms of improvement in the second-law efficiency

it should be solved by ees.....

Solutions

Expert Solution

samet mamat answered 2 years ago
Next > < Previous

Related Solutions

Consider a steam power plant operating on the simple ideal Rankine cycle. Steam enters the turbine...
Consider a steam power plant operating on the simple ideal Rankine cycle. Steam enters the turbine at 15 MPa and 600°C. The steam condenses in the condenser at 10 kPa. Use the EES software to study the effects of the following cases on the cycle performance and to sketch the T-s diagram for each case: #Plot the variation of the cycle thermal efficiency with the turbine isentropic efficiency. Take the isentropic efficiency of the turbine in the range 70% to...
A steam power plant operates on the simple ideal rankine cycle. the steam enters the turbine...
A steam power plant operates on the simple ideal rankine cycle. the steam enters the turbine at 4 MPa and 500 C and leaves it at 50 kPa and 150 C. the water leaves the condenser as a saturated liquid and is subsequently displaced to the boiler by means of a pump at a temperature of 85 C, which is the isentrophic efficiency of the turbine?
Consider a steam power plant operating on a simple ideal Rankine cycle in which the steam...
Consider a steam power plant operating on a simple ideal Rankine cycle in which the steam enters the turbine at 3 MPa and 350C and is condensed in the condenser at 75 kPa. Determine the thermal efficiency of this cycle and sketch an appropriately labeled T-s diagram. Also compare this thermal efficiency to that a Carnot heat engine operating between these same two limits. The change in enthalpy across the pump = work done by the pump: h2-h1= v1(P2– P1)
In a power plant based on a simple Rankine cycle, steam enters the turbine at 15...
In a power plant based on a simple Rankine cycle, steam enters the turbine at 15 MPa and 900°C. The condenser pressure is 5 kPa. The turbine operates adiabatically and has an isentropic efficiency of 85%, and the pump also operates adiabatically and has an isentropic efficiency of 80%. Determine the work required to pump the water to the boiler in kJ/kg of water flowing, and the enthalpy of the water leaving the pump.
Consider a steam power plant operating on the ideal reheat Rankine cycle. Steam enters the high-pressure...
Consider a steam power plant operating on the ideal reheat Rankine cycle. Steam enters the high-pressure turbine at PH MPa and TH °C and is condensed in the condenser at a pressure of PL kPa. Assume the steam is reheated to the inlet temperature of the high-pressure turbine, and that pump work is NOT negligible. If the moisture content of the steam at the exit of the low-pressure turbine is not to exceed w% percent, determine: (a) the pressure at...
Consider a steam power plant operating on a simple ideal Rankine cycle and having a net...
Consider a steam power plant operating on a simple ideal Rankine cycle and having a net power output of 57 MW. The steam enters the turbine at 9 MPa and 575 ° C and exits at 150 ° C, then it is cooled in the condenser to a pressure of 100 kPa by means of the cooling water from a lake and that circulates through the condenser tubes to a rate of 1370 kg / s. Consider leaving the pump...
The net power of a steam power plant operating according to the simple ideal Rankine cycle...
The net power of a steam power plant operating according to the simple ideal Rankine cycle is 30.5 MW. Water vapor enters the turbine at 7 MPa pressure and 500 ° C, expands to 10 kPa condenser pressure in the turbine. The steam is condensed in the condenser by cooling it with water from a lake. The flow rate of the lake water is 1950 kg / h. Get the pump and turbine adiabatic efficiency of 87%. Show the cycle...
A steam power plant operates on a practical Rankine Cycle. The steam enters the turbine at...
A steam power plant operates on a practical Rankine Cycle. The steam enters the turbine at 3 MPa and “648” K and is condensed in the condenser at a pressure of 46 kPa. You are assigned on a project to improve the thermal efficiency of this plant. a) Draw the schematic of the plant and determine the thermal efficiency of the practical cycle assuming that the efficiencies of pump and turbine are 0.75 and 0.7, respectively. ( b) Draw a...
Ideal Reheat Steam Cycle (10) Consider a steam power plant operating on the ideal reheat Rankine...
Ideal Reheat Steam Cycle (10) Consider a steam power plant operating on the ideal reheat Rankine cycle. Steam enters the high-pressure turbine at PH MPa and TH °C and is condensed in the condenser at a pressure of PL kPa. Assume the steam is reheated to the inlet temperature of the high-pressure turbine, and that pump work is NOT negligible. If the moisture content of the steam at the exit of the low-pressure turbine is not to exceed w% percent,...
A steam power plant operates on a regenerative Rankine cycle. Steam enters the turbine at 6...
A steam power plant operates on a regenerative Rankine cycle. Steam enters the turbine at 6 MPa at 700 ºC and the condenser at 10 kPa. Turbine has isentropic efficiency of 85% and pumps have isentropic efficiency of 90%. Steam is extracted from the turbine at 0.6 MPa to heat the feedwater in an open feedwater heater. Water leaves the open feedwater heater as saturated liquid. a) Draw the system with labels and show the ideal and the non-ideal cycle...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT