Homework 5The steam power plant has the following data :Steam condition at turbineinlet 6 MPa, 450 Condenser pressure 0.008 MPa .The plant is fitted with oneclosed feedwater heater using bled steam, and its drains are pumped into thefree line after the heater. Steam may be bled at 0.8 MPa .Sketch the cycleand calculate the following:A- The amount of bled steam per kg of exhaust steam.b- Cycle efficiency.1BoilerBoiler9MixingchamberTurbineClosedFWHCondenserPump II6Pump 1

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Answered: Homework 5 The steam power plant has…

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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write legibly pls A simple gas-turbine operates with air as the working fluid, a pressure ratio of 18:1 and a maximum temperature of 700°C. The air enters the compressor at 100kPa and 20°C. Determine: a. Thermal Efficiency of the cycleb. The heat addedc. The state of the air exhausted by the turbine
Solve with me time 50 minutes ..Calculate the ideal cycle efficiency and specific steam consumption (S.S.C.) of a regenerative eycle with triple extractions, as shown in Figure 1, with boiler outlet steam pressure and superheat steam temperature are 8 MPa and 500 °C, respectively, and condenser pressure 9.6 kPa. If the steam flowing through the turbine is 100 kg/s, also find the power output. Determine the heat rate of the turbine, which is defined as "the heat required at the turbine inlet per unit of power generated." (Assume the turbine extraction bleed steam pressures such that temperature difference between T, and T, is approximately equally divided. Neglect work input to boiler feed pump. Also assume that on completion of regenerative feed heating, the enthalpies of both the compressed feedwater and condensed steam are equal to the enthalpies of the saturated liquid corresponding to the respective extraction bleed steam pressures
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.____________________________
By adding a condenser to the steam plant in problem#1, the turbine back pressure was reduced to 0.2 bar. Find The condition of the exhaust moisture from the turbine The work ratio The specific steam consumption (Problem#1 In the open-circuit steam plant, boiler feed water at atmospheric pressure 1 bar and 35oC is pumped into an oil-fired boiler which produces dry-saturated steam at 10 bar. This steam enters a steam turbine and is expanded isentropic ally to atmospheric pressure and freely discharged into the atmosphere. )
SITUATIONAL PROBLEM NO IV A reheat cycle with two stages of reheating is executed with steam expanding initially from 20MPA and 540degC. The two reheater pressures are 3.8MPA and 0.97MPa, and the steam leavers each reheater at 540degC. Condensation occurs at 60degC. For an Ideal cycle of 1kg/s of steam find: 14. Heat Added 15. Turbine Work 16. Heat Rejected 17. Pump Work 18. Net Work 19. Thermal Efficiency of the system
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.
Please answer d, e, and f. d. Calculate the power output from the turbine. Assume the process is adiabatic. e. Calculate the heat transfer in the economizer and the boiler. f. Calculate the heat loss from the pipes between points 4 and 5 in the plant.
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.
Please explain steps
A medium size power station is used to produce 30 MW net power for arefinery. The station uses steam as the operating fluid and operatesaccording to the Carnot cycle between the pressure limits of 0.4 bar and35 bar. Steam enters the boiler as a saturated liquid and leaves it as adry saturated vapour. (i) Calculate the thermal efficiency of the power station if theisentropic efficiency of the steam turbine is 94%. (ii) State main disadvantages of using the Carnot cycle as the basis fora power station. (iii) State the name of the cycle that is used in practice in powerstations, along with three key benefits over the Carnot cycle.
Show given, complete solution, and diagram. A steam power plant operates on the Rankine Cycle. The steam enters the turbine at 7 Mpa and 550 with a velocity of 30 m/s. It discharges to the condenser at 20kpa with a velocity at 90 m/s. Calculate the net workin kw for a flow of 37.8kg/s. a. 23.23 Mw c. 34.22 Mw b. 53.34 Mw d. 46.54 Mw
b. A refrigerating system using Freon-12 has an evaporator saturation temperature of - 25°C and a condenser saturation temperature of 35°C. The vapor is dry saturated at entry to the compressor and has a temperature of 65°C after compression to the condenser pressure. There is no undercooling of the liquid in the condenser. i. Calculate the input power required by the compressor per kW of refrigeration. ii. Calculate the COPRef of the refrigerating system. ii. Show the operating cycle of the refrigerating system on a T-s diagram.

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