Нeat3-3 A “real" Brayton cycle is shown in Figure3-3. The cycle starts at 300K (T1) and apressure of 100 kPa. The compressor has anisentropic efficiency of 85% and the turbinehas an isentropic efficiency given in Table 2,along with other process temperatures and thenet power output. Assume there is nopressure loss in the piping P2=P3=P4 and P5=P6=P1 and the working fluid is air (useactual properties.) The heat recovery HX hasa given effectiveness (ɛ) as defined byhz – h2h5 – h26.tombustor3RecoveryCompressorTurbineFigure 3. Brayton with heat recoveryE =Additionally, you are givenNturb T4 (K) Heat Exchanger Effectiveness (8) Pressure ratio Net power (kW)0.91 13000.75106000With this information, solve (a) mass flow rate of air [kg/s], (b) rate of heat added at the combustor(kW), (c) thermal efficiency of the cycle, and (d) Back work ratio (BWR)

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Answered: Нeat 3-3 A “real" Brayton cycle is…

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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Required information. The net work output and the thermal efficiency for the Carnot and the simple ideal Rankine cycles with steam as the working fluid are to be calculated and compared. Steam enters the turbine in both cases at 10 MPa as a saturated vapor, and the condenser pressure is 50 kPa. In the Rankine cycle, the condenser exit state is saturated liquid and, in the Carnot cycle, the boiler inlet state is saturated liquid. Draw the T-s diagrams for both cycles. (Please upload your response/solution using the controls below.) upload a response file (15MB max) Choose File no file selected save
solve d, e, and f
A gas turbine power plant operating on an ideal Brayton cycle has a pressure ratio of 8.the gas temperature is 320K at the inlet and 1400k at the turbine inlet. Using air standard assumptions calculate the back work ratio
Problem 2: Consider the following Rankine cycle with reheat (notice the numbering here is different from the previous diagram). Steam enters the high pressure turbine at 14MPa and 600C, and is reheated at constant pressure to 600C. It exits the second, low pressure turbine at 10kPa with a quality of 89.4%. Given 2 1 3 4 P3 = 14MPa T3 = 600°C 5 T5 = 600°C Condenser High P. 6 Low P. PG = 10kPa x6 = 89.6% (i.e. moisture content Is limited to 10.4%) Find P4, nth Assumptions SS, Ake = Ape = 0 Ideal cycle (isentropic efficiency of turbine and pump are 100%, no heat transfer where unintended, no pressure drops due to friction) P₂ = P3, P4 = P5, P6 = P₁
Diesel cycle releases 1750 J/mol ofheat. The pressure and temperature at the begin-ning of the compression step are 1 bar and 50°C,and the pressure at the beginning of the expansionis 5 bar. The working fluid is an ideal gas for whichcP= 7R/2 andcV= 5R/2. (a) What is the tem-perature at the end of the adiabatic expansion? (b)What is the heat absorbed by the engine? (c) Whatis the compression ratio? (d) What is the work doneduring the compression step?
turbine turbine Reheater (4 Boiler P4= P5 = Prcheat Pump Condenser The following data was given for a steam power plant operating on the ideal reheat Rankine cycle. 3-4: Inlet steam at 17.5 MPa and 600 °C 6-1: inlet steam at a pressure of 11.16 kPa at a wetness fraction of 0 1 At state 1, the specific volume is 0.00101 m/kg Find the pressure in bar at state 6 to 3 decimal places
Q4/ Steam enters the turbine of a power plant operating on the Rankine cycle at 600 ℃ and exhausts at 30 kPa. Calculate the thermal efficiency of the cycle for boiler pressure of 10000 kPa?
3. Show that the thermal efficiency of the Carnct cycle in terms of the isentropic compression ratio r is given by e = 1-1. k-1
COMBUSTIONMENGINEERING PROBLEM: Rdirat www A regenerative-reheat gas turbine with intercooling between turbine stages is shown in figure. Air enters at 100 kPa, 300 K with a mass flow rate of 5.807 . The pressure ratio across the two-stage sec compressor is 10. The pressure ratio across the two-stage turbine is 10. The intercooler and reheater each operate at 300 kPa. At the inlets to the Turbine stages, the temperature is 1400 K. The temperature inlet to the second compressor stage is 300 K. The polytropic efficiency of each compressor and turbine stage is 80 %. The regenerator effectiveness is 80 %. č, = 1.005 , k = 1.4 Determine a. The Compressor work, in kg air k/ b. The Turbine work, in- kg air c. The Net cycle work, in- kg air d. The thermal efficiency, in percent e. The work ratio f. The The net power developed, in kW E- Draw the corresponding cycle diagram on the pv plane.
3. What are the basic components of Rankine Cycle and draw TS diagrams
What would be the isentropic efficiency of a turbine if the working fluid is steam and the inlet conditions are as follow T = 400 C and P = 3000 kPa. The fluid leaves the turbine at 70 kPa and 280 C. The output power of turbine is equal to 1500000 W. Select one: a. 0.86 b. 0.2 c. 0.42 d. 0.74

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