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Question 10 10 pts A gas turbine operates with a two stage air compressor incorporating intercooling,...
Air is compressed steadily by a reversible compressor from an inlet state of 100 kPa and...
Air is compressed steadily by a reversible compressor from an inlet state of 100 kPa and 300 K to an exit pressure of 900 kPa. Determine the compressor work per unit mass for (a) isentropic compression with k 1.4, (b) a compressor with 85% isentropic efficiency, (c) two-stage compression (100 kPa to 300 kPa, and 300 kPa to 900 kPa) with intercooling with an isentropic efficiency of 85% for both compressors. (50 points) 2.
A motor car gas turbine unit has two centrifugal compressors in series giving an overall pressure...
A motor car gas turbine unit has two centrifugal compressors in series giving an overall pressure ratio of 6/1. The air leaving the HP compressor passes through a heat exchanger before entering the combustion chamber. The expansion is in two turbine stages, the first stage driving the compressors and the second stage driving the car through gearing. The gases leaving the LP turbine pass through the heat exchanger before exhausting to the atmosphere. The HP turbine inlet temperature is 800...
5. Similar to 9-127 A gas turbine operates with a regenerator and two stages of reheating...
5. Similar to 9-127 A gas turbine operates with a regenerator and two stages of reheating and intercooling. Air enters this engine at 14 psia and 50°F, the pressure ratio for each stage of compression is 2.7, the air temperature when entering a turbine is 940°F, and the regenerator operates perfectly. Determine the mass flow rate of the air passing through this engine and the rates of heat addition and rejection when this engine produces 1040 hp. Assume isentropic operations...
Brayton cycle question Problem 5 A Brayton cycle operates with a two stage compressor with an...
Brayton cycle question
Problem 5 A Brayton cycle operates with a two stage compressor with an intercooler and a two stage turbine with a reheater at an overall pressure ra- tio of 16. The cycle breaths in air from the surroundings at 100kPa and 20°c. Enough heat is added in the combustor so that the maximum temperature of this cycle is 940K. The intercooler reduces the temperature of the working luid to the air inlet temperature, and the reheater raises...
Air enters a two-stage compressor at 300 K and 101 kPa. The pressure ratio of each...
Air enters a two-stage compressor at 300 K and 101 kPa. The pressure ratio of each compressor stage is 3, and there is intercooling between the stages, which reduces the temperature of the air back to 300 K. The efficiency of the compressors is 0.70; the ratio of specific heats for air, k, is 1.40; and the specific heat at constant pressure, p, is 1000 J/kg K. What would be the temperature of the air after the second compression if...
Question A.1 A schematic of a gas turbine combined cycle generating plant is shown in Figure...
Question A.1 A schematic of a gas turbine combined cycle generating plant is shown in Figure A1.1 on the next page. Exhaust gas from the gas turbine generator pass througha heat recovery steam generator (HRSG) which generates steam to drive a steam turbine generator. The following data is provided for the plant: Gas turbine 18.9:1 Pressure ratio Compressor air inlet temperature Turbine inlet temperature 15°C t 273 288 1350°C +273- 1623 588 kg/s T, T3 Exhaust gas mass flow Isentropic...
(i) In a gas turbine plant, air enters the compressor at 150 C and it is...
(i) In a gas turbine plant, air enters the compressor at 150 C and it is compressed through a pressure ratio of 4 with isentropic efficiency of 85%. The air-fuel ratio is 80 and the calofific value of fuel is 42000kJ/kg. The turbine inlet air temperature is 1000 K and the isentropic efficiency of the turbine is 82%. Calculate the overall efficiency and air intake for à power output of 260 kW. Take the mass of fuel inG account. PSG...
two stage compressor with intercooling between the stages is used to compress air from 1 bar...
two stage compressor with intercooling between the stages is used to compress air from 1 bar and 15C to 9 bar in a Gas-Turbine cycle . The high pressure turbine drives the compressor whereas low pressure turbine is coupled with an electrical generator. The compressor and turbine efficiencies are 85%; 75%, respectively. Heat is added to the compressed air after leaving the compressor till its temperature reaches 900C. The air then expands in HPT to an intermediate pressure and reheat...
Design a small gas turbine engine to produce 150 kW of net power. Use an air-standard...
Design a small gas turbine engine to produce 150 kW of net power. Use an air-standard analysis (constant gas properties) and assume air enters the compressor at 100kPa and 20°C. The compressor pressure ratio is 8, the maximum cycle temperature is 800°C, and the cold air stream leaves the regenerator 10°C cooler than the hot air stream at the inlet of the regenerator. Assume a compressor isentropic efficiency of 87% and a turbine isentropic efficiency of 93%. Determine the rates...
Problem 1 (15 pts) A gas turbine cycle operates with a compressor pressure ratio of 12...
Problem 1 (15 pts) A gas turbine cycle operates with a compressor pressure ratio of 12 and a mass flow rate of 5.0 kg/s. Air enters the compressor at 1 bar, 290 K. The maximum cycle temperature is 1600 K. For the compressor, the isentropic efficiency is 85%, and for the turbine the isentropic efficiency is 90%. Using an air-standard analysis with air as ideal gas with constant specific heats, calculate: a) the volumetric flow rate of air entering the...
Air is compressed steadily by a reversible compressor from an inlet state of 100 kPa and 300 K to an exit pressure of 900 kPa. Determine the compressor work per unit mass for (a) isentropic compression with k 1.4, (b) a compressor with 85% isentropic efficiency, (c) two-stage compression (100 kPa to 300 kPa, and 300 kPa to 900 kPa) with intercooling with an isentropic efficiency of 85% for both compressors. (50 points) 2.
5. Similar to 9-127 A gas turbine operates with a regenerator and two stages of reheating and intercooling. Air enters this engine at 14 psia and 50°F, the pressure ratio for each stage of compression is 2.7, the air temperature when entering a turbine is 940°F, and the regenerator operates perfectly. Determine the mass flow rate of the air passing through this engine and the rates of heat addition and rejection when this engine produces 1040 hp. Assume isentropic operations...
Brayton cycle question
Problem 5 A Brayton cycle operates with a two stage compressor with an intercooler and a two stage turbine with a reheater at an overall pressure ra- tio of 16. The cycle breaths in air from the surroundings at 100kPa and 20°c. Enough heat is added in the combustor so that the maximum temperature of this cycle is 940K. The intercooler reduces the temperature of the working luid to the air inlet temperature, and the reheater raises...
Air enters a two-stage compressor at 300 K and 101 kPa. The pressure ratio of each compressor stage is 3, and there is intercooling between the stages, which reduces the temperature of the air back to 300 K. The efficiency of the compressors is 0.70; the ratio of specific heats for air, k, is 1.40; and the specific heat at constant pressure, p, is 1000 J/kg K. What would be the temperature of the air after the second compression if...
Question A.1 A schematic of a gas turbine combined cycle generating plant is shown in Figure A1.1 on the next page. Exhaust gas from the gas turbine generator pass througha heat recovery steam generator (HRSG) which generates steam to drive a steam turbine generator. The following data is provided for the plant: Gas turbine 18.9:1 Pressure ratio Compressor air inlet temperature Turbine inlet temperature 15°C t 273 288 1350°C +273- 1623 588 kg/s T, T3 Exhaust gas mass flow Isentropic...
(i) In a gas turbine plant, air enters the compressor at 150 C and it is compressed through a pressure ratio of 4 with isentropic efficiency of 85%. The air-fuel ratio is 80 and the calofific value of fuel is 42000kJ/kg. The turbine inlet air temperature is 1000 K and the isentropic efficiency of the turbine is 82%. Calculate the overall efficiency and air intake for à power output of 260 kW. Take the mass of fuel inG account. PSG...
Design a small gas turbine engine to produce 150 kW of net power. Use an air-standard analysis (constant gas properties) and assume air enters the compressor at 100kPa and 20°C. The compressor pressure ratio is 8, the maximum cycle temperature is 800°C, and the cold air stream leaves the regenerator 10°C cooler than the hot air stream at the inlet of the regenerator. Assume a compressor isentropic efficiency of 87% and a turbine isentropic efficiency of 93%. Determine the rates...
Problem 1 (15 pts) A gas turbine cycle operates with a compressor pressure ratio of 12 and a mass flow rate of 5.0 kg/s. Air enters the compressor at 1 bar, 290 K. The maximum cycle temperature is 1600 K. For the compressor, the isentropic efficiency is 85%, and for the turbine the isentropic efficiency is 90%. Using an air-standard analysis with air as ideal gas with constant specific heats, calculate: a) the volumetric flow rate of air entering the...
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