9. In a reheat cycle steam at 15 MPa, 540C enters the engine and expands to...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
9. In a reheat cycle steam at 15 MPa, 540°C enters the engine and expands to 1.95 MPa At this point the steam is withdrawn and passed through a reheater.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 engine at 540°C. Expansion now occurs to the condenser pressure of 0.0035 MPa. (a) For the ideal cycle, find e, (b) A 60,000 kw turbine operates between the same state points except that the steam enters the reheater at 1.95 MPa and 260°C, departs at 1.8 MPa and 540°C. The steam flow is 147,000 kg/hr, generator efficiency is 96%. For actual engine, find e,, m, and n. (c) Determine the approximate enthalpy of the exhaust steam if the heat lost through the turbine casing is 2% of the combined work. Ans.: (a) 46.1%, (b) 37.3%, 2.45 kg/kwh, 79.3%, (c) 2489.6 9. In a reheat cycle steam at 15 MPa, 540°C enters the engine and expands to 1.95 MPa At this point the steam is withdrawn and passed through a reheater.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 engine at 540°C. Expansion now occurs to the condenser pressure of 0.0035 MPa. (a) For the ideal cycle, find e, (b) A 60,000 kw turbine operates between the same state points except that the steam enters the reheater at 1.95 MPa and 260°C, departs at 1.8 MPa and 540°C. The steam flow is 147,000 kg/hr, generator efficiency is 96%. For actual engine, find e,, m, and n. (c) Determine the approximate enthalpy of the exhaust steam if the heat lost through the turbine casing is 2% of the combined work. Ans.: (a) 46.1%, (b) 37.3%, 2.45 kg/kwh, 79.3%, (c) 2489.6
Expert Answer:
Related Book For
Fundamentals of Thermodynamics
ISBN: 978-0471152323
6th edition
Authors: Richard E. Sonntag, Claus Borgnakke, Gordon J. Van Wylen
Posted Date:
Students also viewed these mechanical engineering questions
-
Steam enters an adiabatic turbine at 8 MPa and 500C at a rate of 3 kg/s and leaves at 20 kPa. If the power output of the turbine is 2.5 MW, determine the temperature of the steam at the turbine exit....
-
Steam enters an adiabatic turbine at 8 MPa and 500°C with a mass flow rate of 3 kg/s and leaves at 30 kPa. The isentropic efficiency of the turbine is 0.90. Neglecting the kinetic energy change...
-
Steam expands in an adiabatic turbine from 8 MPa and 500C to 0.1 MPa at a rate of 3 kg/s. If steam leaves the turbine as saturated vapor, the power output of the turbine is (a) 2174 kW (b) 698 kW (c)...
-
Find a PTLU factorization of the given matrix A. (Enter each matrix in the form [[row 1], [row 2],...], where each row is a comma-separated list.) 0 1 2 -1 4 1 1 3 3 A =
-
In recent years fresh bagel sales have been growing at about 30% per year. Once considered an ethnic food to be eaten with cream cheese and lox, bagels now "have become the new donut to bring to the...
-
Rewrite each underlined portion, if necessary, to correct any dangling or misplaced modifiers. To maintain good health, physicians recommend both vigorous exercise and disciplined eating.
-
The following data were obtained from the year-end financial statements of The Arcadia Company: Required Compute the following ratios for The Arcadia Company: (1) Return on Sales, (2) Return on...
-
The scheduled arrival time for a daily l ight from Boston to New York is 9: 25 am. Historical data show that the arrival time follows the continuous uniform distribution with an early arrival time of...
-
In the SEE phase of SAGE, how does making decisions under uncertainty apply? Question 8 options: It emphasizes certainty and strict rules It deals with recognizing ambiguity and incomplete...
-
DM Yard Services has now added residential and commercial customers and is providing services on a regular basis. Review the Income Statement and Sales by Customer Summary Report: January 1 - May 31....
-
Bob has a client who wants some advice. The client, Sara, has a small buisness which is running into cash-flow problems. She is already in too much debt, so she would prefer not to take a bank loan....
-
Scenario: You are the HR manager at a medium-sized company that recently expanded its operations and hired several new employees. Among them is Sarah, a talented marketing specialist who has been...
-
The data on Table 4 is taken from the 2013 annual report for Synovus, which reported $812 million in NII before provisions and $26.3 billion in average assets in 2013. Review the information and...
-
What are 2-3 strategies for communicating the mission and vision statements to various stakeholder groups ( e.g., leadership team, faculty, staff, students, parents, guardians, and community members)...
-
Prepare, in good form and in an Excel spreadsheet, the following:Schedule of Initial Investment required to start Roas's Palas franchise.A Variable Cost Schedule showing percentages.A 3 - year Fixed...
-
3. A company has issued a floating-rate note with a coupon rate equal to the three-month Libor+ 65 basis points. Interest payments are made annually on 31 March 2021, 31 March 2022, 31 March 2023,...
-
ABC Firm has purchased a new machine in January 2 0 2 4 . The information given below: Price of Machine $ 1 . 4 4 . 0 0 0 Operating Expense $ 1 5 0 . 0 0 0 Shipping / Installation Expenses$ 6 0 . 0 0...
-
Discuss whether responsible human resources management should apply different standards for the home company and suppliers, for developed countries and developing countries, and for large companies...
-
Consider a Carnot cycle heat engine operating in outer space. Heat can be rejected from this engine only by thermal radiation, which is proportional to the radiator area and the fourth power of...
-
Consider natural gas A and natural gas D, both of which are listed in Table 14.2. Calculate the enthalpy of combustion of each gas at 25C, assuming that the products include vapor water. Repeat the...
-
A boiler delivers steam at 10 MPa, 550C to a two-stage turbine as shown in Fig. 11.17. After the first stage, 25% of the steam is extracted at 1.4 MPa for a process application and returned at 1 MPa,...
-
What type of records would be used or maintained for the following manufacturing activities? a. Determining the amount of a specific material on hand b. Issuing direct materials for production c....
-
Why do we name it a predetermined manufacturing overhead rate?
-
Briefly explain the sequential flow of product costs through a cost accounting system.
Study smarter with the SolutionInn App