In a gas turbine of a thermoelectric plant a regenerator is used that preheats the air...

In a gas turbine of a thermoelectric plant a regenerator is used that preheats the air before it enters the combustion chamber. You have the options of a backflow heat exchanger or a shell heat exchanger and two tube passages. The air leaves the compressor at a temperature of 350 C and the exhaust gases have a temperature of 700 C. The mass flow in both cases is 5 kg / sec. The overall transfer coefficient is 75 w / m2 K. In both cases the area is 18 m2. Find the best posible exchanger.

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samet mamat answered 2 years ago

. In a gas turbine plant, air enters a compressor at atmospheric conditions of 15 ?C,...

. In a gas turbine plant, air enters a compressor at atmospheric conditions of 15 ?C, 1.0133 bar and is compressed through a pressure ratio of 10. The air leaving the compressor passes through a heat exchanger before entering the combustion chamber. The hot gases leave the combustion chamber at 800 ?C and expand through an HP turbine which drives the compressor. On leaving the HP turbine the gases pass through a reheat combustion chamber which raises the temperature of...

. Air enters the compressor of a gas turbine power plant operating on Brayton cycle at...

. Air enters the compressor of a gas turbine power plant operating on Brayton cycle at 14.5 psia and 540° R. The pressure ratio across the turbine and compressor is same, which is equal to 6. Assume that the compressor work as 0.4 times the turbine work. Take K=1.4 a) Draw the T-S diagram of the cycle. [2] b) Calculate the maximum temperature in the cycle. [3] c) Calculate the cycle efficiency

In a gas turbine plant, air is compressed from 1.01 bar and 15 ?C through a...

In a gas turbine plant, air is compressed from 1.01 bar and 15 ?C through a pressure ratio of 4. It is then heated to 650 ?C in a combustion chamber, and expanded back to atmospheric pressure. Calculate the cycle efficiency and work ratio if a perfect heat exchanger is employed. The isentropic efficiencies of the turbine and compressor are 0.85 and 0.80, respectively. ANSWER (0.319, 0.319)

In a gas turbine plant, air is compressed through a pressure ratio of 6 from 15...

In a gas turbine plant, air is compressed through a pressure ratio of 6 from 15 ?C. It is then heated to the maximum permissible temperature of 750 ?C and expanded in two stages each of expansion ratio ?6, the air being reheated between the stages to 750 ?C. A heat exchanger allows the heating of the compressed air through 75 percent of the maximum range possible. Calculate the cycle efficiency, the work ratio and the net work output per...

A gas-turbine power plant operates on the simple Brayton cycle with air as the working fluid...

A gas-turbine power plant operates on the simple Brayton cycle with air as the working fluid and delivers 32 MW of power. The minimum and maximum temperatures in the cycle are 310 and 900 K, and the pressure of air at the compressor exit is 8 times the value at the compressor inlet. Assuming an isentropic efficiency of 80% for the compressor and 86% for the turbine, determine the mass flow rate of air through the cycle. Account for the...

Air enters the compressor of a gas-turbine plant at ambient conditions of 100 kPa and 25°C...

Air enters the compressor of a gas-turbine plant at ambient conditions of 100 kPa and 25°C with a low velocity and exits at 1 MPa and 347°C with a velocity of 90 m/s. The compressor is cooled at a rate of 1500 kJ/min, and the power input to the compressor is 235 kW. Determine the mass flow rate of air through the compressor. The inlet and exit enthalpies of air are 298.2 kJ/kg and 628.07 kJ/kg. The mass flow rate...

13.75 Air enters the compressor of a simple gas turbine power plant at 70F, 1 atm,...

13.75 Air enters the compressor of a simple gas turbine power plant at 70F, 1 atm, is compressed adiabatically to 40 lbf/in.2, and then enters the combustion chamber where it burns completely with propane gas (C3H8) entering at 77F, 40 lbf/in.2and a molar flow rate of 1.7 lbmol/h. The combustion products at 1340F, 40 lbf/in.2 enter the turbine and expand adiabatically to a pressure of 1 atm.The isentropic compressor efficiency is 83.3% and the isentropic turbine efficiency is 90%. Determine...

I want a report on ‏)Gas Turbine Power Plant as are being used as standby plants...

I want a report on ‏)Gas Turbine Power Plant as are being used as standby plants for hydro-electric)

Air enters the turbine of a gas turbine at 1400 kPa, 1400 K, and expands to...

Air enters the turbine of a gas turbine at 1400 kPa, 1400 K, and expands to 100 kPa in two stages. Between the stages, the air is reheated at a constant pressure of 350 kPa to 1400 K. The expansion through each turbine stage is isentropic. Determine: (b) the heat transfer for the reheat process, in kJ/kg of air flowing. (c) the increase in net work as compared to a single stage of expansion with no reheat.

A combined gas turbine–vapor power plant has a net power output of 200 MW. Air enters...

A combined gas turbine–vapor power plant has a net power output of 200 MW. Air enters the compressor of the gas turbine at 300 kPa, 1200 K, and is compressed to 1000 kPa. The pressure ratio of the gas turbine cycle is 11. Steam leaving the turbine of the vapor power cycle are used to heat the steam at 6 MPa to 350C in a heat exchanger. The combustion gases leave the heat exchanger at 420 K. An open feedwater...

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