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 In a reheat cycle steam at 15 MPa, 540°C enters the engine and expands to 1.95 MPa At this point the steam is withdrawn and passed through a reheater.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 In a reheat cycle steam at 15 MPa, 540°C enters the engine and expands to 1.95 MPa At this point the steam is withdrawn and passed through a reheater.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 =
-
Solve each quadratic equation. a. 2x2 - 5x - 3 = 0 b. x2 + 4x - 4 = 0 c. x2 + 4x + 1 = 0
-
Write a class based on class SortedType as an unbounded arraybased implementation. If the dynamically allocated array is full, create an array double the size and move the elements into it.
-
Increasingly, householders and small businesses are considering renewable power generation systems to decrease their costs. Most of the UK, Ireland and Scandinavia are suited to generating energy...
-
The auditors opinion on the fairness of financial statements may be affected by subsequent events. a. Define what is commonly referred to in auditing as a subsequent event, and describe the two...
-
Identify the two modes of tax classifications and their respective tax systems in most open economies? Discuss the economic implications of the above (5a) tax systems in developing economies
-
In 1913, how long did the average worker stay with the plant? What was the average tenure of a worker? Assume the one-millionth vehicle was produced in 1916 at a cost of $8084 (in 2013 US$). By how...
-
Probability and Hypothesis Testing . Introduction In Unit 4, we begin the transition from descriptive statistics to inferential statistics that are studied in the remainder of the course, including...
-
i) ii) Identify the Miller indices for the planes drawn below in cubic unit cells. (201) (112) or (TT3) Determine the d-spacing for each of the above planes in terms of the lattice parameter, a....
-
Consider the following reaction. What would be the equilibrium constant expression? 4Br2(g) + CH4(9) 4HBr(g) + CBr4(g)
-
An investment bank has developed a new indicator for tracking international currency values using the cost of an iPad (8th generation) 32GB as a benchmark. The concept behind the iPad Index is based...
-
(a) Find the three equations of state for a system with the fundamental equation: () 3 - (OR) = V = Show then that = -u. (You can assume that 0, R and Vo are positive constants). Remember that U(S,V,...
-
NUMBER ONE a) b) Differentiate between a feedback control system and a feed forward control system. (4 marks) In his study of: "the impact of budgets on people" C Argyris reported the following...
-
Using python socket programming, send a packet "Hello Server!" using loopback address and host IP address (separately) to port 5050. Your program should print a "packet sent successfully" message...
-
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,...
-
Describe how the principles of operant learning theory and social cognitive theory can be used to manage workplace diversity and reduce the effects of workplace stereotypes. How can the...
-
Consider how the four basic types of managerial activities (ie., routine communication, traditional management, networking, and human resource management) can influence employees perceptions of trust...
-
An introductory statistics instructor believes that the median number of hours that students study each week is less than 15 . He randomly sampled 20 students, asked them to disclose the number of...
Study smarter with the SolutionInn App