Explain, with the aid of diagrams, the principles of operation of steam turbine plants. For an application for a Mechanical Engineering Internship Programme, a Mechanical Engineer mustexamine the operation of practical steam and gas turbines plants. The most efficient cycle is the Carnotcycle for given temperatures of source and sink. This applies to both gases and vapours. However, theRankine cycle is more suitable as a criterion for actual steam cycles than the Carnot cycle. In the application:

Answered: For an application for a Mechanical…

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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Could subsection Vii and onwards be solved please?
Superheated steam at a pressure of 300 bar and a temperature of 550 ℃ enters a turbine made up of two stages. Steam exits the first stage of the turbine at 35 bar and gets reheated at a constant pressure at 550 ℃. Each stage of the turbine has an isentropic efficiency of 80%. The isentropic efficiency of the pump is 85%. The pressure of the condenser is 10 kPa. (a) Sketch the cycle in a T-s diagram and calculate the enthalpy at each point of the cycle. (b) Calculate the flow rate of the working fluid if the power output of the turbine is 100 MW. (c) Calculate the thermal efficiency of the cycle. (d) Double check the result for the heat rejected in the condenser.
%) In a gas-turbine plant working on a Brayton Cycle, the air at the inlet of the compressor is at 25C (298.15 K) and 100 kPa. The pressure ratio (PB/PA=PC/PD) is 6.50 and the maximum permissible temperature in the turbine is 800C (1073.15 K). Consider CP = (7/2)R and CV = (5/2)R and n = 1 mol Determine the following of the ideal air cycle: (adiabatic reversible compression and adiabatic reversible expansion). Express heat and work in Joules. Thermal efficiency of the air cycle, if the compressor and turbine operate adiabatically but irreversibly with efficiencies ncomp=0.80 and nturb=0.85
Projects 2: Rankine and Carnot cycle in practice Your colleague at the power plant station initiated a mutual discussion, where he suggested applying the Carnot cycle since it is considered the optimal cycle that steam power plant may be operated on. You were in a position to justify him why there many difficulties and impracticalities associated with the Carnot cycle in terms of the steam power plant, deliver a brief report explain why the Rankine cycle is preferred over the Carnot cycle in steam production plants, mention all impracticalities associated with applying Carnot cycle including the limitation of boiler and condenser temperature and pressure with respect to the surrounding saturation conditions (you may construct TS diagrams for both cycles to demonstrate your comparison).
3. A Rankine turbo-generator unit receives 27,000 kg/h of steam at 1.2 MPa and superheat by 122 degrees. Conden- sate leaves at 22°C. For a brake steam rate of 4.74 kg/kwh, mechanical efficiency of 90% and generator efficiency of 94%, determine (a) the ideal cycle thermal efficiency, (b) the indi- cated engine efficiency, (c) the condition of turbine actual exhaust, and (d) the turbo-generator output in Kw. Ans. (a) 33%, (b) 85.7%, (c) 87%, (d) 5354.5 kw in 1 ber
I need help on this assignment: Design a steam cycle that can achieve a cycle efficiency of at least 40% under the conditions that all turbines have isentropic efficiencies of 85%, and all pumps have isentropic efficiencies of 60%. Prepare an engineering report describing your design. This must include the following: (a) Discussion of various cycles attempted to meet the goal as well as the positive and negative aspects of your design.(b) System figures and T-s diagrams with labelled sates and temperature, pressure, enthalpy and entropy information for your design. (c) Provide calculations for above
please answer the image i attached thank you
A rankine turbo generator unit receives 27000kg/h of steam at 1.2mpa and superheat by 122 degree. Condensate leaves at 22°c. For a brake steam rate of 4.74 kg/kwh, mechanical efficiency of 94%, determine (a) the ideal cycle thermal efficiency, (b) the indicated engine efficiency, (c) the condition of turbine actual exhaust, and (d) the turbo generator output in kw.
part a b and c
Compare the thermal efficiency of a two-stage gas turbine with regeneration, reheating, and intercooling to that of a three-stage gas turbine with the same equipment when the maximum cycle temperature is 800°C.
Known: The data provided at the principal states of a thermal power plant. Assume an Ideal Rankine Cycle. (a) Explain about the general theory about the thermal power plant? (b) Formulate to determine the work done by the pump, and also formulate the work done by the turbine? (c) Evaluate the amount of heat supplied to the steam, and also determine the thermal efficiency of the cycle? Conditions: The steam enters into the turbine at a Pressure of 24 bar & 400°C and the exhaust steam is enter into the condenser at a pressure of 0.1 bar. Scheme and given data: Boiler 24 bar & 400°C Turbine 0.1 bar Condenser
On my online homework, it says the answer for part b, 993.2 kW and part c, 360.06 are incorrect. I also need help with part d. The figure below provides steady-state operating data for a cogeneration cycle that generates electricity and provides heat for campus buildings. Steam at 1.5 MPa, 280°C, enters a two-stage turbine with a mass flow rate of m1 = 2 kg/s. A fraction of the total flow, y = 0.15, is extracted between the two stages at 0.2 MPa to provide for building heating, and the remainder expands through the second stage to the condenser pressure of 0.1 bar. Condensate returns from the campus buildings at 0.1 MPa, 60°C and passes through a trap into the condenser, where it is reunited with the main feedwater flow. Saturated liquid leaves the condenser at 0.1 bar.

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