The goal of adding a reheat line to a Rankine cycle is to increase the thermal efficiency of the cycle.If an increase of efficiency is achieved, what must be true?O The power input to the pumps is decreasedThe power output from the turbines is increased more than the heat transfer into the boilerThe heat transfer into the boiler in increased more than the power output of the turbinesO The heat transfer into the boiler decreased

In the Rankine cycle the process reheating is done to remove the moisture carried by the steam to…

The goal of adding a reheat line to a Rankine cycle is to increase the thermal efficiency of the cycle. If an increase of efficiency is achieved, what must be true? The power input to the pumps is decreased O The power output from the turbines is increased more than the heat transfer into the boiler O The heat transfer into the boiler in increased more than the power output of the turbines O The heat transfer into the boiler decreased

The goal of adding a reheat line to a Rankine cycle is to increase the thermal efficiency of the cycle. If an increase of efficiency is achieved, what must be true? The power input to the pumps is decreased O The power output from the turbines is increased more than the heat transfer into the boiler O The heat transfer into the boiler in increased more than the power output of the turbines O The heat transfer into the boiler decreased

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

What are the two benefits of adding a reheater to a Rankine cycle?
Consider a simple ideal Rankine cycle and an ideal regenerative Rankine cycle with one open feedwaterheater. The two cycles are very much alike, except the feedwater in the regenerative cycle is heated byextracting some steam just before it enters the turbine. Compare the efficiencies of these two cycles. Showyour complete solution and diagram’s.
15. The actual Rankine cycle has an 90.22% turbine isentropic efficiency and 81.14% pump isentropic efficiency. If in the ideal Rankine cycle, the heat input in the boiler - 903 kW, the turbine work output 394 kW, and pump work input = 17 kW, what is the actual cycle thermal efficiency if the heat input in the boiler is the same for the actual cycle? Express your answer in percent.
Which of the following statements is false in terms of increasing the thermal efficiency of the ideal Rankine cycle? a.) increasing the boiler pressure will increase the efficiency and reduces the moisture content of the steam b.) Decreasing the condenser pressure lowers the temperature of the steam as well as the temperature at which heat is rejected c.) Expansion of steam in two stages with reheating reduces the moisture content of the steam d.) None of these note: Please explain answer
In an ideal Reheat cycle , the steam throttled condition is 7 Mpa and 460 C. The steam is then reheated to 1.5 MpA and 460 C . If turbine exhaust is 50 C ,determine the following: A.) Quality after turbine expansion B.) Turbine work C.) Heat added in the boiler D.) Heat rejected from the condenser E.) Pump work F.) Net work G.) Cycle efficiency
In a simple Rankine cycle, the working fluid is water, operating at pressures between 7.5 kPa and 1750 kPa. The water vapor is in the form of saturated steam at the turbine inlet. Recognizing that expansion in the turbine and compression in the pump are reversible adiabatic,a) Show the cycle schematically in the T-s diagram.b) Calculate the thermal efficiency of the cycle.
35 - In the simple ideal Rankine cycle, the enthalpy of water at the pump outlet is 230 kJ/kg. If the pressure at the turbine inlet is 9 MPa and the temperature is 400ºC, which of the following should be supplied to the water at a flow rate of 50 kg/s? a) 225.5 MW B) 199.7 MW NS) 259.1 MW D) 224.8 MW TO) 144.4 MW
In an ideal reheat cycle, the steam throttled condition is 8 MPa and 480 degree C. the steam is then reheated to MPa and 460 degree C. the turbine exhaust is 60 degree C. The required values of some state point properties are tabulated below. Determine the enthalpy of steam entering the reheater.
The ideal Rankine cycle has lower efficiency than a Carnot cycle operating between the same two temperatures. Which of the following is the primary reason the efficiency is lower? The condenser is not isothermal. The pump is not reversible. The boiler is not isothermal. The condenser over cools the liquid vapor mix. The boiler has to change a liquid into a gas.
38 - In a Brayton cycle using air as the working fluid, the temperature at the compressor outlet is 540 K and the turbine inlet is 1040 K. Mass flow rate is 21 kg/s. Which of the following is the heat given to the air? a) 13.91 MW B) 12.29 MW NS) 14.08 MW D) 14.18 MW TO) 11.5 MW
26 - In the simple ideal Rankine cycle, water enters the pump in saturated liquid phase at 50 kPa and leaves the pump at 6600 kPa. What is the power of the pump for 36 kg/s flow rate? a) 242.9 kW B) 259.1 kW NS) 257.6 kW D) 199.7 kW TO) 200.4 kW
A steam power plant operates on the simple ideal Rankine cycle. The steam enters the turbine at 4 MPa and 500°C and is condensed in the condenser at a temperature of 40°C. draw and label the schematic diagram and the pV and TS planes. (a) Show the cycle on a T-s diagram. If the mass flow rate is 10 kg/s, determine (b) the thermal efficiency of the cycle (c) the net power output in kW.