A steam power plant operates on an ideal regenerative Rankine cycle. Steam leaves the boiler at 20 Mpa and 600 °C with a mass flow rate of 50000 kg/hr. The first stage of extraction occurred at 15 MPa and the second and third extraction at 10 MPa and 5 MPa, respectively. The remaining steam leaves the turbine at 60 kPa. Calculate: The amount of heat added, and heat rejected

A steam power plant operates on an ideal regenerative Rankine cycle. Steam leaves the boiler at 20 Mpa and 600 °C with a mass flow rate of 50000 kg/hr. The first stage of extraction occurred at 15 MPa and the second and third extraction at 10 MPa and 5 MPa, respectively. The remaining steam leaves the turbine at 60 kPa. Calculate: The amount of heat added, and heat rejected

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

A power plant operating on an ideal Rankine cycle has steam entering theturbine at 500°C and 2 MPa. If the steam enters the pump at 10 kPa, calculate the thermal efficiency with pump work included, the thermal efficiency neglecting pump work, and the percentage error in efficiency neglectingpump work.
4. Consider a simple ideal Rankine cycle. The pressure of the boiler and the condenser are 3 Mpa and 10 kPa respectively. The temperature of the steam entering the turbine is 350°C, and the quality of mixture leaving the turbine is 0.8. Calculate the back work ratio, in %. 0.4% - 0.5% · 0.3 % - 0.6%
Thermodynamic
2. Steam enters the turbine of an ideal Rankine cycle at 8 MPa and expands adiabatically to 10 kPa. If the moisture content of the steam at the turbine exit is not to exceed 0.1, calculate the thermal efficiency of the cycle.
Steam in a reheat Rankine cycle enters the first-stage turbine at 8 MPa and 450°C. The steam leaves this first turbine at 800 kPa as a saturated vapor. The steam is then reheated isobarically back to 450°C before entering the second-stage turbine. At the exit of this second turbine, the steam is at 10 kPa and 50°C. The net power output of this cycle is 20 MW, and the water leaves the condenser as a saturated liquid. You may assume the pump functions isentropically and that there are no pressure losses in the condenser and boiler. Determine C. d. e. MW. Draw this cycle on a T-s diagram. Calculate the isentropic efficiencies of the first- and second-stage turbines. Calculate the thermal efficiency of the cycle. Calculate the mass flow rate of steam, in kg/h. Calculate the rate of heat transfer from the water as it passes through the condenser, in
QI) Consider a steam power plant that operates on a simple ideal Rankine cycle and has a net power output of 45 MW. Steam enters the turbine at 6 MPa and 500°C and is cooled in the condenser at a pressure of 20 kPa by running cooling water from a lake through the tubes of the condenser at a rate of 2000 kg/s. Show the cycle on a T-s diagram with respect to saturation lines, and determine: The thermal efficiency of the cycle?
Concentrating solar collectors are used to provide the heat source for a Rankine cycle using water as the working substance. The design specifications require a power output of 10 MW. Commercially available collectors allow steam to be generated at 2500 kPa and 3200C. The cycle low pressure is assumed to be 8 kPa. Determine (a) the cycle thermal efficiency; (b) the mass flow rate of steam; and (c) the mass flow of cooling water if its temperature increases by 12oC.
In an ideal Brayton cycle with regeneration, argon gas is compressed from 100 kPa and 25°C to 400 kPa, and then heated to 1200°C before entering the turbine. The highest temperature that argon can be heated in the regenerator is (a) 246°C (b) 846°C (c) 689°C (d) 368°C (e) 573°C
3) An ideal Rankine cycle with superheat and reheat has steam entering the turbine at 10 MPa and 440 °C. The steam is extracted and sent to the reheater at a pressure of 1.5 MPa, and returns to the turbine at 440 °C. The condenser pressure is 20 kPa. The cycle produces 400 MW of net power. Determine (a) the qualities of steam at (i) high pressure turbine exit, and (ii) low pressure turbine exit (b) the thermal efficiency, in % (c) the rate of heat transfer, into the working fluid as it passes through the boiler, in MW (d) the rate of heat transfer, from the condensing steam as it passes through the condenser, in MW (e) the mass flow rate of the condenser cooling water, in kg/ h, if cooling water enters the condenser at 12 Cand exits at 37 C