Justify why the Rankine cycle is preferred over the Carnot cycle in steam production plants aroundthe world. Include diagrams to aid in your explanation. 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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Need help with this engineering problem. Steam is the working fluid in the ideal Rankine cycle 1–2–3–4–1 and in the Carnot cycle 1–2–3'–4'–1 that both operate between pressures of 1 bar and 100 bar as shown in the T–s diagram in the figure below. Both cycles incorporate the steady flow devices. For each cycle determine: (a) the net power developed per unit mass of steam flowing, in kJ/kg. (b) the percent thermal efficiency.
A Rankine Cycle operates between high and low temperature reservoirs at 1500oC and 25oC respectively. What is the maximum theoretical efficiency of this cycle?
Steam enters the turbine of a power plant operating on the Rankine cycle at 3300 kPa and exhausts at 50 kPa. To show the effect of superheating on the performance of the cycle, calculate the thermal efficiency of the cycle and the quality of the exhaust steam from the turbine for turbine-inlet steam temperatures of 450, 500, 5500C.
Steam enters the turbine of a simple vapor power plant with a pressure of 10 MPa and temperature T, and expands adiabatically to 6 kPa. The isentropic turbine efficiency is 85%. The saturated liquid exits the condenser at 6 kPa and the isentropic pump efficiency is 82%. (a) For T = 580°C, determine the turbine exit quality and the cycle thermal efficiency. (b) Plot the quantities of part (a) versus T ranging from 580 to 700°C.Note: Please produce a concise, workable solution that includes all of the necessary details and explanations. Thank you so much; if the wish is fulfilled, I'll hit "like" right away.
2. Steam enters the turbine of an ideal Rankine cycle at 8 MPa and expands adiabatically to 10 kPa. If the moisture content of the steam at the turbine exit is not to exceed 0.1, calculate the thermal efficiency of the cycle.
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
Fill in the blank: The compression in the Otto cycle involves an isentropic process in a closed piston-cylinder assembly, whereas the compression in the ideal Brayton cycle involves an isentropic process in a(n) (Type your answer here) operating at steady state.
Chapter 5 Review Problems 1. The working substance for the Carnot cycle is 8 lb. of air. The volume at the beginning of isothermal expansion is 9 cu ft and the pressure is 300 psia. The ratio of the expansion during the addition of heat is 2 at the temperature of the cold body is 90° F. Find(a) Qa, (b) Qr, (c) V3 (d) p3 (e) V4(f) p4 (g) Pm (h) the ratio of expansion during the isentropic process, and (i) the overall ratio of compression. Ans. (a) 346.4 Btu (b) -209.1 Btu; (c) 63.57 cu ft; (d) 25.64 psia; (e) 31.79 cu ft; (f) 51.28 psia; (g) 13.59 psia; (h) 3.53; (i) 7.06 2. Gaseous nitrogen actuates a Carnot power cycle in which the respective volumes at the four corners of the cycle starting at the beginning of the isothermal expansion, are V1= 10.10 L, V2= 14.53 L, V3= 226.54 L, and V4= 157.73 L. The cycle receives 21.1 kJ of heat. Determine (a) the work and (b) the mean effective pressure. 6, Ans. (a) 14.05 kJ; (b) 64.91 КРа 3. Show that the thermal efficiency of the Carnot cycle in…
What four processes make up the simple ideal Brayton cycle?

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