A gas-turbine plant operates on the regenerative Brayton cycle, the schematic diagram of which is shown...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
A gas-turbine plant operates on the regenerative Brayton cycle, the schematic diagram of which is shown in Fig. Q 1, with two stages of reheating and two-stages of intercooling between the pres- sure limits of100 and 1200 kPa. The working fluid is air. The air enters the first and the second stages of the compressor at 300 K and 350 K , respectively, and the first and the second stages of the turbine at 1400 K and 1300 K, respectively. Assuming both the compressor and the turbine have an isentropic efficiency of 80%. The regenerator has an effectiveness of Egen = 75%. Assume var iable specific heats (i.e., use the concept of relative pressures) and the intermediate pressures of intercooling and reheating is the square root of the product of inlet and exit pressures for inter- cooling and reheating. Make other the necessary assumptions and determine (a) the back work ratio, B, and the net work output, wnet (b) the thermal efficiency (that is the first-law efficiency, 7, ) and (c) the relative efficiency (that is the second-law efficiency, 71). Draw the correct T-s diagram for this cycle with labelled property values. R = 287 J/(kg K). air 10 Regenerator Reheat Combustor Combustor Compressor Stage 1 Compressor Stage 2 Turbine 1 Turbine 2 2 Intercooler Fig. Q 1 A gas-turbine plant operates on the regenerative Brayton cycle, the schematic diagram of which is shown in Fig. Q 1, with two stages of reheating and two-stages of intercooling between the pres- sure limits of100 and 1200 kPa. The working fluid is air. The air enters the first and the second stages of the compressor at 300 K and 350 K , respectively, and the first and the second stages of the turbine at 1400 K and 1300 K, respectively. Assuming both the compressor and the turbine have an isentropic efficiency of 80%. The regenerator has an effectiveness of Egen = 75%. Assume var iable specific heats (i.e., use the concept of relative pressures) and the intermediate pressures of intercooling and reheating is the square root of the product of inlet and exit pressures for inter- cooling and reheating. Make other the necessary assumptions and determine (a) the back work ratio, B, and the net work output, wnet (b) the thermal efficiency (that is the first-law efficiency, 7, ) and (c) the relative efficiency (that is the second-law efficiency, 71). Draw the correct T-s diagram for this cycle with labelled property values. R = 287 J/(kg K). air 10 Regenerator Reheat Combustor Combustor Compressor Stage 1 Compressor Stage 2 Turbine 1 Turbine 2 2 Intercooler Fig. Q 1
Expert Answer:
Related Book For
Thermodynamics An Engineering Approach
ISBN: 978-0073398174
8th edition
Authors: Yunus A. Cengel, Michael A. Boles
Posted Date:
Students also viewed these mechanical engineering questions
-
A gas-turbine plant operates on the regenerative Brayton cycle with two stages of reheating and two-stages of intercooling between the pressure limits of 100 and 1200 kPa. The working fluid is air....
-
A gas-turbine power plant operates on the regenerative Brayton cycle between the pressure limits of 100 and 700 kPa. Air enters the compressor at 308C at a rate of 12.6 kg/s and leaves at 2608C. It...
-
Gas-turbine plant operates on the regenerative Brayton cycle with two stages of reheating and two-stages of intercooling between the pressure limits of 100 and 1200 kPa. The working fluid is air. The...
-
Which of the following statements are true about REST? Pick ONE OR MORE options Logical URLs should be used instead of physical URLS Adal URLs must always be used in REST response A paging technique...
-
Gina has $500,000 accumulated in her RRSP and intends to use the amount to purchase a 20-year annuity. She is investigating the size of quarterly payment she can expect to receive, depending on the...
-
Determine the maximum weight of the bucket that the wire system can support so that no single wire develops a tension exceeding 100lb. 30 30
-
What is the purpose of practice aids in forensic and valuation services?
-
Gronseth Drywall Systems, Inc., is in discussions with its investment bankers regarding the issuance of new bonds. The investment banker has informed the firm that different maturities will carry...
-
Simon Company's year-end balance sheets follow. At December 31 Assets Current Year 1 Year Ago 2 Years Ago Cash Accounts receivable, net $ 34,375 99,630 $ 40,993 69,607 Merchandise inventory Prepaid...
-
Formulate a linear program which can be used to generate a comprehensive plan for the whole Far Eastern operations. Clearly define every variable used in your formulation. Start your report with an...
-
The shareholders' equity section of Trane Inc. as at December 31, 20x6 is as follows: $24,000,000 Common shares, 3,500,000 shares outstanding Contributed surplus - Common Share Repurchases Retained...
-
1. What is the purpose of statistics? 2. What is a D 8 ? 3. Given a D 4 and a D 6 : in how many ways can you get a total of five?
-
Late one night, a deputy sheriff found Ronald Rico in his car parked on the side of a road in a rural area of the county. Rico was at the wheel, the headlights were on, and the radio was playing at a...
-
(a) Explain in your own words what x, x 2 , SS x , x, and x are. Why do we have different formulas for these quantities? (b) What is the difference between population and sample, and how are they...
-
What criminal offenses described in Chapters 5 through 9 can be committed by using a computer?
-
Can the reversible efficiency be more than 1, justify your answer.
-
As an investment analyst for a fund that invests in bonds, you are tasked with evaluating the efficacy of a potential investment. You are given a bond that has a 4% coupon rate and matures 4 years...
-
What are multinational corporations (MNCs) and what economic roles do they play?
-
A 50-cm-long, 0.2-cm-diameter electric resistance wire submerged in water is used to determine the boiling heat transfer coefficient in water at 1 atm experimentally. The surface temperature of the...
-
An old gas turbine has an efficiency of 21 percent and develops a power output of 6000 kW. Determine the fuel consumption rate of this gas turbine, in L/min, if the fuel has a heating value of 42,000...
-
Helium enters a converging-diverging nozzle at 0.7 MPa, 800 K, and 100 m/s. What are the lowest temperature and pressure that can be obtained at the throat of the nozzle?
-
Macquarie Manufacturing Ltd prepared the following planned production data for the forthcoming year ending 30 June 2019. Required (a) Prepare a table showing the predetermined factory overhead rate...
-
Beautiful Bottles Pty Ltd, bottle manufacturer for the food industry, has just installed a job order costing system. The company uses machine hours to apply its overhead to work in process. On 1 May...
-
Green Consultants Pty Ltd specialise in consulting on landscape design. The company developed a predetermined charge-out rate based on hours for each of its consultants on 1 July 2019 to assign the...
Study smarter with the SolutionInn App