Water is the working fluid in an ideal Rankine cycle. Superheated vapor enters the turbine at 8 MPa, 480°C. The condenser pressure is 8 kPa. The net power output of the cycle is 100 MW. Determine for the cycle (a) the rate of heat transfer to the working fluid passing through the steam generator, in kW. (b) the thermal efficiency. (c) the mass flow rate of condenser cooling water, in kg/h, if the cooling water enters the condenser at 15°C and exits at 35°C with negligible pressure change.

Water is the working fluid in an ideal Rankine cycle. Superheated vapor enters the turbine at 8 MPa, 480°C. The condenser pressure is 8 kPa. The net power output of the cycle is 100 MW. Determine for the cycle (a) the rate of heat transfer to the working fluid passing through the steam generator, in kW. (b) the thermal efficiency. (c) the mass flow rate of condenser cooling water, in kg/h, if the cooling water enters the condenser at 15°C and exits at 35°C with negligible pressure change.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

In an ideal Rankine cycle, steam is generated at 4.1 MPa and 480°C. The condenser is at 32°C. For an engine with the same end states, determine its steam rate in kg/kWh.
Regenerative Cycle (Open Feedwater Heater): 4. Steam enters the turbine at 10 MPa and 550 °C with mass flow rate of 10 kg/s and is condensed in the condenser at a pressure of 10 KPa. Some Steam is extracted from the turbine at 0.8 MPa and enters in an open feedwater heater. Determine the amount of steam that is condensed in the condenser.5. 23 percent of the steam is extracted from the turbine. The enthalpy and pressure at point 6 is 3100 KJ/KG and 1.26 MPa respectively. Determine the enthalpy of point 2.6. A Steam exits the boiler at 15 MPa and 550 °C and the pressure at point 1 and point 3 is 12 KPa and 1.3 MPa respectively. Determine the Overall Pump work of the cycle if 18 % of the steam is extracted from the turbine.
PROBLEM: Steam power plant with ideal Rankine cycle. Steam enters the turbine at 4MPA and 700°C. The steam is cooled in the condenser at 20 kPa using cooling water. The net power output of the cycle is 100MW. Determine: a) The power produced by the turbine and consumed by the pump, b) thermal efficiency of the cycle, c) mass flow rate of the steam, and d) the mass flow rate of the condenser cooling water, if the cooling water enters the condenser at 15 °C and exits at 35°C. Draw the T-s diagram.
2. A Rankine cycle is characterized by turbine inlet conditions of 10 MPa and 500°C. The condenser pressure is 6 kPa. The heat transfer to the steam in the boiler occurs at the rate of 7.0 X 100 kW. The cooling water in the condenser increases in temperature from 20⁰ to 30°C. Determine (a) the net power produced; (b) the cooling-water flow rate in kg/s; (c) the cycle thermal efficiency.
Water is the working fluid in an Ideal Rankine cycle. Steam enters the turbine at 1400 lbpin² and 1000°F. The condenser pressure is 2 Iben. The net power output of the cycle is 250 MW. Cooling water experiences a temperature Increase from 60°F to 765, with negligible pressure drop, as it passes through the condenser. Step 1 Determine the mass flow rate of steam, In lb/h, Step 2 Hint Your answer is correct On Determine the rate of heat transfer, in Stuh, to the working fuld passing through the steam generator. 2144195010 Btu/h Step 3 Hint 1536198.045 Your answer is correct. Step 4 Your answer is correct. Determine the thermal efficiency of the cycle. Hint 39.78 % Determine the mass flow rate of cooling water, in lb/h 1b/h Attempts: 3 of 4 used Attempts: 1 of 4 used Attempts: 1 of 4 used
A steam power plant operates on an ideal regenerative Rankine cycle. Steam enters the turbine at 5 MPa, 450 ∘C, and is condensed in the condenser at 15 kPa. Steam is extracted from the turbine at a pressure of 0.4 MPa and enters the open feedwater heater. Water leaves the feedwater heater as a saturated liquid. A) Determine the thermal efficiency of the cycle. B) Determine the net work output per kilogram of steam flowing through the boiler. (W_net)
There is a simple real rankine cycle, in which the steam enters the turbine with a pressure of 5MPa and a temperature of 500°C. The working pressure of the condenser is 20kPa. The mass flow of steam 35.4 kg/s. The Isoentropic efficiency of the turbine is 88% And the isoentropic efficiencyof the pump is 84%. Determine: a) The thermal efficiency of the cycle b) The net power produced by this cycle
Water is the working fluid in a Rankine cycle. Superheated vapor enters the turbine at 8 MPa, 5608C with a mass flow rate of 7.8 kg/s and exits at 8 kPa. Saturated liquid enters the pump at 8 kPa. The isentropic turbine efficiency is 88%, and the isentropic pump efficiency is 82%. Cooling water enters the condenser at 188C and exits at 368C with no significant change in pressure. Determine: (a) the net power developed, in kW. (b) the thermal efficiency. (c) the mass flow rate of cooling water, in kg/s
Consider a water-ammonia binary vapor cycle consisting. In the steam cycle, superheated vapor enters the turbine at 7 MPa, 450C, and saturated liquid exits the condenser at 55C. The heat rejected from the steam cycle is provided to the ammonia cycle, producing saturated vapor at 45C, which enters the ammonia turbine. Saturated liquid leaves the ammonia condenser at 1 MPa. For a net power output of 24 MW from the binary cycle, determine (a) the mass flow rates for the steam and ammonia cycles, respectively, in kg/s, (b) the power output of the steam and ammonia turbines, respectively, in MW. (c) the rate of heat input to the ammonia cycle, in MW, (d) the rate of heat addition to the binary cycle, in MW, and (e) the thermal efficiency of the binary vapor cycle.
Consider an ideal Rankine cycle. Water exits the condenser at a pressure of 0.08 bar and a flow rate of 30 kg/s. Saturated steam exits the boiler at a pressure of 150 bar. Determine: (a) the net power developed by the power plant, in kW. (b) the rate of heat transfer in the boiler, in kW. (c) the thermal efficiency of the cycle.