Question

In: Mechanical Engineering

In an ideal Rankine cycle with reheat, superheated steam vapor enters the turbine at 10 MPa...

In an ideal Rankine cycle with reheat, superheated steam vapor enters the turbine at 10 MPa and
480 °C, while the condenser pressure is 6 kPa. Steam expands through the first-stage turbine to
0.7 MPa and then is reheated to 480 °C
a) Calculate the total heat addition, net work of the cycle, heat extraction through condenser,
and thermal efficiency of this ideal Rankine cycle with reheat. [25]
b) Calculate the same quantities assuming that the pump and each turbine stage have an
isentropic efficiency of 80%. [25]
c) Draw p-v diagrams for these two cycles  

do only part c)

Solutions

Expert Solution


Related Solutions

In an ideal Rankine cycle with reheat, superheated steam vapor enters the turbine at 10 MPa...
In an ideal Rankine cycle with reheat, superheated steam vapor enters the turbine at 10 MPa and 480 °C, while the condenser pressure is 6 kPa. Steam expands through the first-stage turbine to 0.7 MPa and then is reheated to 480 °C a) For a pressure of 7 bar right after the first stage turbine in the ideal Rankine cycle, create two plots: thermal efficiency as a function of the reheat temperature from 200 °C to 500 °C; and the...
In an ideal Rankine cycle with reheat, superheated steam vapor enters the turbine at 10 MPa...
In an ideal Rankine cycle with reheat, superheated steam vapor enters the turbine at 10 MPa and 480 °C, while the condenser pressure is 6 kPa. Steam expands through the first-stage turbine to 0.7 MPa and then is reheated to 480 °C. Calculate the total heat addition, net work of the cycle, heat extraction through condenser, and thermal efficiency of this ideal Rankine cycle with reheat  
Consider steam in an ideal Rankine cycle. The saturated vapor enters the turbine at 8.0 MPa.
 Consider steam in an ideal Rankine cycle. The saturated vapor enters the turbine at 8.0 MPa. Saturated liquid exits the condenser at P = 0.008 MPa. The net power output of the cycle is 100 MW. determine the thermal efficiency of the cycle
Steam is the working fluid in an ideal Rankine cycle with superheat and reheat. Steam enters...
Steam is the working fluid in an ideal Rankine cycle with superheat and reheat. Steam enters the high-pressure turbine at 8.0MPa, 480̊C, and expands to 0.6MPa. It is then reheatedto 450̊C before entering the low-pressure turbine where it expands to the condenser pressure of 10kPa. The net power output is 110MW. A closed feedwater heater (CFWH) which uses steam extracted fromthe low-pressure turbine at 0.5MP. The extracted steam leaves the CFWH as a saturated liquid and is then pumped up...
In a non-ideal Rankine cycle saturated vapor (x=1) enters the turbine at 8.0 MPa and saturated...
In a non-ideal Rankine cycle saturated vapor (x=1) enters the turbine at 8.0 MPa and saturated liquid water (x=0) exits the condenser at a pressure of Pexit. Pexit = 0.006 MPa. The net power output of the cycle is given as 100 MW. Knowing that the isentropic efficiency of the pump is 0.85 generate the following plots in Excel or in similar programs for the given range of the isentropic efficiency of the turbine. (Please submit your Excel sheet or...
A reheat Rankine cycle operates with water as the working fluid. Steam enters the first turbine...
A reheat Rankine cycle operates with water as the working fluid. Steam enters the first turbine at 8 MPa and 450◦C and exits at 0.8 MPa. It is then reheated at 400◦C before entering the second turbine, where it exits at 10 kPa. If the amount of work into the pump is 8.04 kJ/kg and the net work per cycle produced is 1410.5 kJ/kg, determine the thermal efficiency. Assume no pressure losses in the condenser or the boiler.
Superheated steam at 20 MPa, 640°C enters the turbine of a vapor power plant. The pressure...
Superheated steam at 20 MPa, 640°C enters the turbine of a vapor power plant. The pressure at the exit of the turbine is 0.5 bar, and liquid leaves the condenser at 0.4 bar at 75°C. The pressure is increased to 20.1 MPa across the pump. The turbine and pump have isentropic efficiencies of 81 and 85%, respectively. Cooling water enters the condenser at 20°C with a mass flow rate of 70.7 kg/s and exits the condenser at 38°C. For the...
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 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...
Water is the working fluid in an ideal Rankine cycle. Saturated vapor enters the turbine at...
Water is the working fluid in an ideal Rankine cycle. Saturated vapor enters the turbine at 16 MPa, and the condenser pressure is 8 kPa. The mass flow rate of steam entering the turbine is 50 kg/s. Determine: (a) the net power developed, in kW. (b) the rate of heat transfer to the steam passing through the boiler, in kW. (c) the percent thermal efficiency. (d) the mass flow rate of condenser cooling water, in kg/s, if the cooling water...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT