State234p (kPa)10012001200100T (K)300603.51450780.7h (kJ/kg)300.19610.651575.57800.78 An ideal air-standard regenerative Brayton cycle produces 10 MW ofpower. Operating data at principal states in the cycle are given inthe table below. The states are numbered as in Fig. 9.14. Sketch theT-s diagram and determinea. the mass flow rate of air, in kg/s.b. the rate of heat transfer, in kW, to the working fluid passingthrough the combustor.c. the thermal efficiency.RegeneratorwwwwwCompressorCombustorTurbinecycle

The mass flow rate, rate of heat transfer, and thermal efficiency. Given: The power produced is…

Answered: An ideal air-standard regenerative…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

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6. Air enters the compressor of an air-standard Brayton cycle with a volumetric flow rate of 60 m³/s at 0.8 bar, 280 K. The compressor pressure ratio is 20, and the maximum cycle temperature is 2100 K. For the compressor, the isentropic efficiency is 92% and for the turbine the isentropic efficiency is 95%. Determine (a) the net power developed, in MW. (b) the rate of heat addition in the combustor, in MW. (c) the thermal efficiency of the cycle.
7.
18. An air standard Dual cycle has a compression ratio of 16, and compression begins at 1 bar, 50°C. The maximum pressure is 70 bar. The heat transferred to air at constant pressure is equal to that at constant volume. Determine : (i) The cycle efficiency. Take : c, = 1.005 kJ/kg-K, c, = 0.718 kJ/kg-K. (ii) The mean effective pressure of the cycle. [Ans. (i) 66.5% ; (ii) 4.76 bar]
Air enters the compressor of a regenerative air-standard Brayton cycle with a volumetric flow rate of 60 m3/s at 0.8 bar, 280 K. The compressor pressure ratio is 20, and the maximum cycle temperature is 2100 K. For the compressor, the isentropic efficiency is 92% and for the turbine the isentropic efficiency is 95%. The regenerator effectiveness of 85%. The pressure drops across a given stream in the regenerator and combustor can be neglected. Kinetic and potential energy changes are negligible. The outer walls of all components are thermally insulated. Use variable specific heat approach to indicate the air properties. a) Determine the rate of heat addition to the combustor, in MW b) Determine the thermal efficiency of the cycle c) Draw the processes in a T-s diagram
Thermodynamics 2
Which of the following statement is not true of the diesel cycle? (you must use thermodynamic diagram with explanation.)a. The expansion process is an isentropic process.b. The exhaust process is a constant-volume process.c. The combustion process is a constant-volume process.d. The compression process is an adiabatic process.e. One heat transfer process is a constant-pressure process
Analyzing a Regenerative Gas Turbine with Intercooling and ReheatEXAMPLE 9.11 -A regenerative gas turbine with intercooling and reheat operates at steady state. Air enters the compressor at 100 kPa, 300 K with a mass flow rate of 5.807 kg/s. The pressure ratio across the two-stage compressor is 10. Thepressure ratio across the two-stage turbine is also 10. The intercooler and reheater each operate at 300 kPa. At the inlets to the turbine stages, the temperature is 1400 K. The temperature at the inlet to the second compressor stage is 300 K. The isentropic efficiency of each compressor and turbine stage is 80%. The regenerator effectiveness is 80%. Determine: (a) the thermal efficiency (b) the back work ratio (c) the net power developed, (kW).
3. Air is used in an ideal Brayton cycle (shown in p-v and T-s diagram). The state conditions are given in the following Table. (a) The heat addition and heat rejection (b) The net power developed per unit mass flow rate (c) The thermal efficiency State T(°C) P(kPa) 1 20 100 3 1000 350 T 3 3 b a 2.
Assume a basic (non-regenerative) ideal Brayton cycle where air modeled as IG with variables specific heat. The gas-turbine engine has the following operational parameters: Inlet Air Temperature:537 R Inlet Air Pressure:14.696 psia Compressor Pressure Ratio (rp):6.0 Firing Temperature:2400 R Heat Recovery Steam Generator: Assume that the exhaust from the gas turbine engine is directed to a heat recovery steam generator (HRSG)to produce wet steam (i.e. saturated vapor) at a pressure of 600 psia. Liquid water is supplied to the HRSG at 100F and 600 psia. The exhaust gas from the gas-turbine engine leaves the HRSG at the saturation temperature of the wet steam. With these conditions determine: a) the exit temperature of the wet steam (F), b) the intensive steam production rate, lbm-steam/lbm-exhaust gas. Absorption Chiller CHP: Assume the process steam from the HRSG is now used to drive an absorption chiller with COP of 0.7, and that the mechanical power of the gas-turbine engine is used…

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