Question

In: Mechanical Engineering

Consider an ideal Rankine cycle modified with the addition of a single reheat stage. The working...

Consider an ideal Rankine cycle modified with the addition of a single reheat stage. The working fluid is H20. The maximum pressure in the cycle is 10MPa, and the temperature of the steam exiting both the boiler and the reheater is 550°C. The pressure in the condenser is 10kPa.

1.Draw the T-s diagram for the following three cases.

a) 4.5MPa (= 0.25Pmax + 2MPA)

b) 2.5MPA (= 0.25Pmax)

c) 0.5MPa (= 0.25Pmax - 2MPA)

2.Calculate the thermal efficiency for the three reheat cycles in part 1

Solutions

Expert Solution

samet mamat answered 1 year ago
Next > < Previous

Related Solutions

An ideal Rankine cycle with reheat uses water as the working fluid. As shown in the...
An ideal Rankine cycle with reheat uses water as the working fluid. As shown in the figure below, the conditions at the inlet to the first turbine stage are 1600 lbf/in.2, 1200°F and the steam is reheated to a temperature of T3 = 800°F between the turbine stages at a pressure of p3 = p2 = 400 lbf/in.2 For a condenser pressure of p5 = p4 = 5 lbf/in.2, determine: (a) the quality of the steam at the second-stage turbine...
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,...
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,...
An ideal Rankine Cycle with reheat uses water as the working fluid with a flow rate...
An ideal Rankine Cycle with reheat uses water as the working fluid with a flow rate of 0.15 kg/s. At the inlet of the turbine (state 1) the water is a superheated vapor at 475ºC and 11 MPa. The pressure at the exit of the first stage of the turbine is 0.9 MPa. The reheat temperature (state 3) is also  475ºC.   The condenser pressure is 8 kPa, and the water exits as a saturated liquid Find: (a) The heat addition to...
An ideal Rankine Cycle with reheat uses water as the working fluid with a flow rate...
An ideal Rankine Cycle with reheat uses water as the working fluid with a flow rate of 0.15 kg/s. At the inlet of the turbine (state 1) the water is a superheated vapor at 475ºC and 11 MPa. The pressure at the exit of the first stage of the turbine is 0.9 MPa. The reheat temperature (state 3) is also  475ºC.   The condenser pressure is 8 kPa, and the water exits as a saturated liquid Find: (a) The heat addition to...
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...
Use water as the working fluid ,apply Rankine power cycle with reheat . The first stage...
Use water as the working fluid ,apply Rankine power cycle with reheat . The first stage turbine inlet conditions are 15MPa and 600 C. All the turbines are known to have isentropic efficiency of 95%, however the pump is assumed as an isentropic pump. If the maximum temperature is kept at 500 C and the condenser pressure is 5 kPa, by constructing a suitable plot, show that having more than 2 reheat stages is not practical. (Hint: Take at least...
Problem 2. Problem 1. An ideal Rankine Cycle with reheat uses water as the working fluid...
Problem 2. Problem 1. An ideal Rankine Cycle with reheat uses water as the working fluid with a flow rate of 0.15 kg/s. At the inlet of the turbine (state 1) the water is a superheated vapor at 475ºC and 11 MPa. The pressure at the exit of the first stage of the turbine is 0.9 MPa. The reheat temperature (state 3) is also  475ºC.   The condenser pressure is 8 kPa, and the water exits as a saturated liquid Find: (a)...
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 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...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT