04: The following data refers to a steam turbine power plant employing one stage of regenerative feed heating: State of steam entering HP stage: 10 MPa, 600°C State of steam entering LP stage: 2 MPa, 400°C Condenser pressure: 10 KPa The correct amount of steam is bled for feed heating at exit from the HP stage. Calculate the mass of steam bled per kg of steam passing through the HP stage and the amount of heat supplied in the boiler per second for an output of 10 MW. Neglect pump work. Boiler Feed pump HPT 2 LPT 23 CEP Condenser ←

04: The following data refers to a steam turbine power plant employing one stage of regenerative feed heating: State of steam entering HP stage: 10 MPa, 600°C State of steam entering LP stage: 2 MPa, 400°C Condenser pressure: 10 KPa The correct amount of steam is bled for feed heating at exit from the HP stage. Calculate the mass of steam bled per kg of steam passing through the HP stage and the amount of heat supplied in the boiler per second for an output of 10 MW. Neglect pump work. Boiler Feed pump HPT 2 LPT 23 CEP Condenser ←

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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04: The following data refers to a steam turbine power plant employing one stage of regenerative feed heating: State of steam entering HP stage: 10 MPa, 600°C State of steam entering LP stage: 2 MPa, 400°C Condenser pressure: 10 KPa The correct amount of steam is bled for feed heating at exit from the HP stage. Calculate the mass of steam bled per kg of steam passing through the HP stage and the amount of heat supplied in the boiler per second for an output of 10 MW. Neglect pump work. Boiler Feed pump HPT 2 LPT CEP Condenser
The condensing pressure for a Rankine engine is 0.001325 MPavac. Calculate the following for steam flow rate = 16.3846 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.___________________________
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.____________________________
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
Draw an actual condition of a block diagram and T-S diagram of a gas turbine power plant using inter cooling and regeneration.
a steam 8.0 MPa and 485 degree Celsius enters the turbine and expand at condenser pressure of 0.006 mpa for cycle and 1kg of steam. determine heat added, work turbine, energy chargeable and i deal heat rate
a steam 8.0 mpa and 485 degrees celsius enter the turbine and expand at condenser pressure of 0.006 mpa for cycle and 1kg of steam. determine heat added, worknet, thermal efficienc, for the engine determine steam flow for an engine output of 40000 kw, work turbine, energy chargable, ideal heat rate
500 MMSCFD of supercritical steam generated in the steam generator (shown in the sketch below) at P=250 bar and T = 550°C are expanded into a series of two condensing steam turbines (CSTs) to a final pressure of P, = 8 kPa as shown in the diagram below. To improve the efficiency of the cycle, part of the exhaust of the High Pressure (HP) Turbine at P₂ = P = 40bar is reheated to T = 550° C and sent to the Low Pressure (LP) Turbine for further expansion, and part is throttled down to P = 8 bar and mixed with the discharge of the Condensate Pump of the Condenser effluent in the Overflow Feed Water Heater (OFWH) tank in order to preheat the boiler feed water (which also serves as the Deaerator). This power cycle is known as the Regenerative Rankine Cycle with Open Feed Water Heater and it is shown in the diagram below: QH Go 1 STEAM GENERATOR TURBINE DEAERATOR OPEN FEED WATER HEATER FEED WATER PUMP 3 G THROTTUNG LOW PRESSURE TURBINE 8 5 (m) CONDENSATE PUMP Qc CONDENSER If the efficiency of…
In a steam plant 100 kg/min of dry-saturated steam at 30 bar enters the turbine. After expanding isentropic ally the exhaust steam enters the condenser. The condenser pressure is maintained at 0.1 bar by the cooling water taken from a nearby river. Calculate the following: a. Moisture fraction of exhaust steam. b. Turbine work output in KW c. Work input to the feed pump in KW d. Heat supplied to the boiler KJ/sec e. Heat rejected to the cooling water KJ/sec f. Efficiency of the plant. g. Net power output.
A reversible refrigerator operates using a Carnot refrigeration cycle. It operates usingr-134a between 140 and 400 kPa. The refrigerant exits the compressor (and enters the condenser) assaturated vapor. It also leaves the condenser as saturated liquid.a. Sketch the P-v and T-s diagram of this cycle. Define the coordinate properties of each state oneach graph.b. Evaluate the specific heat and specific work properties of each (in kJ/kg). Indicate the sense.c. Evaluate the coefficient of performance using the specific heats and works from the previousitem. Did it match with the COPR obtained if you used the operating temperatures? Solve for states first. Then, show the solution to each of the above required in order.
Find the cycle efficiency and specific steam consumption of a reheat cycle operating between pressures of 3 MPa and 0.004 MPa, with superheat temp of 450oC Assume that the first expansion is carried out to the point where the steam is dry saturated and then the steam is reheated to the original superheat temp. The feed pump term may be neglected.
Steam from a turbine with inlet pressure 30 bar and temperature 350°C is bled at 5 bar and 1 bar to supply a two-stage regenerator to heat up condensate leaving the turbine at 0.08 bar. In each stage, the condensate is heated up to the saturation temperature of the bled steam and the bled steam itself condenses completely. Remember: in a regenerator, there is no contact between the two streams, only heat exchange. of Consider the amount of steam bled at 5 bar and 1 bar, respectively, to be m¡ and m2 kg per steam supplied to the turbine. For the first stage, m¡ kg of bled steam at 5 bar heats each kg of condensate arriving from the second stage without any contact (that is, regeneration). Then, m¡ kg of condensate derived from the bled steam drains into the steam space of the second stage at 1 bar without heat loss. The combined drain from the second stage at 1 bar consists of mi+m2 kg per kg of steam supplied to the turbine. The combined drain is cooled to the condenser temperature…