Steam is the working fluid in the vapor power cycle with reheat shownin the figure. The mass flow rate is 0.5 kg/s, and the turbines and pumpoperate isentropically. The temperature at the inlet of both turbinestages (i.e. states 1 and 3) is 400 °C The condenser outlet is saturatedliquid.1. Fill in the table below with the missing information.Reheat sectionHigh-pressureturbineState P [bar]h [kJ/kg]s [kJ/kg-K]x [-]Steamgenerator1140CondenserPump2405344562.Draw a T-s diagram for this cycle on the diagram provided3. Determine the net power output of this cycle in [kW]. Be sure to draw the component(s) you areanalyzing, define the system, and apply conservation of energy in the space below.4.Determine the total heat transferred into the system in [kW]. Be sure to draw the component youare analyzing, define the system, and apply conservation of energy in the space bel5.Determine the cycle efficiency.Low-pressureturbine

Answered: Image /qna-images/answer/68a13a02-220b-41df-9d04-c212ee340cef.jpg

Answered: Steam is the working fluid in the vapor…

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

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Calculate the heat supplied, the turbine work, and the pump work per kg of steam in a Rankine cycle where steam leaves the boiler at 4 MPa, 400ºC, and the condenser operates at a pressure of 10 kPa. Also, compute the cycle efficiency. Assume the processes in the turbine and pump to be reversible and adiabatic.
In a reheat cycle steam at 15 MPa, 540 degrees Celsius enters the engine and expands to 1.95 MPa. At this point the steam is withdrawn and passes through a reheater. It reenters the engine at 540 degrees Celsius. Expansions now occur to the condenser pressure of 0.0035 MPa. Find the efficiency.
The condensing pressure for a Rankine engine is 0.001325 MPavac. Calculate the following for steam flow rate = 1 + (200/13) kg/sec of steam when the steam at the beginning of expansion is at 119.6 deg SH and 4.0 Mpaa. Draw the TS and equipment diagrams for the ideal and actual case and find for the following for the ideal case: PV and TS diagrams of the cycle showing ideal and actual process lines Heat rejected at condenser (KJ/sec). Ans.____________________________ Mass of cooling water in kg/sec if cp H2O = 4.18 KJ/kg-K, and inlet temp of water to condenser = 20 deg C, outlet temp is 35 deg C. Ans.____________________________ Rankine engine efficiency (%). Ans.____________________________ Cycle thermal efficiency ( %). Ans.____________________________
The net work for a given reheat Rankine cycle is 80MW. Steam at 10 MPa and 500C enters the first turbine and then, the second turbine at 1.2 MPa and 500C. Saturated liquid exits the condenser at 20 kPa. Draw the schematic and T-S diagrams. Label the points by setting point 1 at the condenser outlet, point 2 at the pump outlet, point 3 at the boiler outlet, point 4 at the reheater inlet, point 5 at the reheater outlet, and point 6 at the condenser inlet. Use 2 decimal places for the enthalpy and other energies in solving and for the final answers. For the steam quality (x) and entropy (s), use 4 decimal places in solving. For the specific volume, use 6 decimal places. IMPORTANT: USE THE STEAM TABLES FROM CENGEL'S BOOK ONLY (uploaded already in the files section). Determine the following: Enthalpy at point 2 in kJ/kg = Enthalpy at point 4 in kJ/kg = Enthalpy at point 5 in kJ/kg = Enthalpy at point 6 in kJ/kg = Thermal Efficiency in % = Heat added in kJ/kg = Heat rejected in…
In a reheat cycle steam at 15 MPa, 540 ̊C enters the engine and expands to 1.95 MPa.At this point the steam is withdrawn and passed through a reheater. It reenters the engineat 540 ̊C. Expansion now occurs to the condenser pressure of 0.0035 MPa (a) For theideal cycle, find e. (b) A 60,000 kw turbine operates between the same state piontsexcept that the steam enters the reheater at 1.95 MPa and 260 ̊C, departs at 1.8 MPa and540 ̊C. the steam flow is 147,000 kg/hr, generator efficiency is 96%. For actual enginefind ek, mk, and nk.
A reheat system has 13,850 KPa throttle pressure at the turbine inlet and a 2800 KPa reheat pressure, the throttle and reheat temperature of the steam is 540 C condenser pressure is 3.4 KPa, engine efficiency of high pressure and low pressure is 75%.Find the cycle thermal efficiency. (include diagram)
In an ideal Rankine cycle, steam is generated at 4.1 MPa and 480 deg. C. The condenser is at 32 deg. C. Determine: a. The cycle thermal efficiency b. For the engine with the same end states, the thermal efficiency and steam rate.
Power plant.
3. A simple ideal Rankine cycle which uses water as the working fluid operates its condenser at 40 °C and its boiler at 300 °C. Calculate the work produced by the turbine, the heat supplied in the boiler, and the thermal efficiency of this cycle when the steam enters the turbine without any superheating. Wpump.in Pump 0-1 9in Boiler 13 qout Turbine Condenser Wturb,out 4
Please help with this Question 2. Please it's urgent.
In a steam turbine plant steam expands in the high pressure turbine from 5000kPa, 500°C to 500kPa with an isentropic efficiency of 0.9. It is then reheated isobarically to 500°C before entering the low pressure turbine. In the low pressure turbine the steam expands to dry saturated, 5kPa. The condensate leaves the condenser with 4° of undercooling. Determine: (a). the condition of the high presfsure turbine exhaust (b). the isentropic efficiency of the low pressure turbine (c). the specific steam consumption for a turbine output power of 7.5MW (d). the Rankine efficiency including the feed pump
An improved refrigeration system with a heat exchanger is shown in the following picture. The heat exchanger is used to superheat the vapor entering the compressor while subcooling the liquid leaving the condenser. The system uses R-134a. The evaporator operates at 15oF and the condenser operates at 100 psia. The heat exchanger provides 40oF of subcooling at the throttle valve entrance. a) Calculate the entropy generation at the throttle for the simple refrigeration cycle. Calculate also the entropy generation of the universe (throttle + surroundings) due to this operation. b) Calculate the process efficiency of the heat exchanger for the refrigeration cycle that includes the heat exchanger

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