Consider a two-stage turbine operating at steady state with reheat at constant pressure between the stages....
Consider a two-stage turbine operating at steady state with reheat at constant pressure between the stages. Show that the maximum work is developed when the pressure ratio is the same across each stage. Use a cold air-standard analysis, assuming the inlet state and the exit pressure are specified, each expansion process is isentropic, and the temperature at the inlet to each turbine stage is the same. Kinetic and potential energy effects can be ignored.
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Consider a two-stage turbine operating at steady state with
reheat at constant pressure between the stages....
4. A regenerative two-stage gas turbine with reheat operating on the standard-air Brayton cycle i...
4. A regenerative two-stage gas turbine with reheat operating on
the standard-air Brayton cycle is illustrated in Figure 3. In an
ideal Brayton cycle, the processes in the turbines and compressor
are adiabatic and isentropic, and the air flows through the
combustor and heat exchangers at constant pressure.
a) Show that the maximum total work output is
developed when the pressure ratio is the same across each stage, if
the temperature at the inlet to each turbine stage is the...
An adiabatic turbine operates at steady state. Air enters the turbine at a pressure and temperature...
An adiabatic turbine operates at steady state. Air enters the turbine at a pressure and temperature of 800 kPa and 1100 K, respectively, and exits at 100 kPa. A temperature sensor at the turbine exit indicates that the exit air temperature is 700 K. Kinetic and potential energy effects are negligible, and the air can be treated as an ideal gas. Determine if the exit temperature reading can be correct. If yes, determine the turbine isentropic efficiency.
Air modeled as an ideal gas enters a turbine operating at steady state at 1040 K,...
Air modeled as an ideal gas enters a turbine operating at steady state at 1040 K, 278 kPa and exits at 120 kPa. The mass flow rate is 5.5 kg/s, and the power developed is 1200 kW. Stray heat transfer and kinetic and potential energy effects are negligible. Assuming k = 1.4, determine: (a) the temperature of the air at the turbine exit, in K. (b) the percent isentropic turbine efficiency.
Air enters the turbine stage 1 of a gas turbine with reheat at 1200 kPa, 1200...
Air enters the turbine stage 1 of a gas turbine with reheat at 1200 kPa, 1200 K, and expands to 100 kPa in two stages. Between the turbine stages, the air is reheated at a constant pressure of 350 kPa to 1200 K. ein lin Combustor Reheat combustor T. = 881.4K To = 1200 K Po = 350 kPa b 2 3 a Turbine stage 2 Turbine stage 1 T3 = 1200 K P3 = 1200 kPa Compressor h4 =...
Problem 4.029 Air expands through a turbine operating at steady state. At the inlet, P1 =...
Problem 4.029 Air expands through a turbine operating at steady state. At the inlet, P1 = 150 lbf/in.2, T1 = 1400ºR, and at the exit, P2 = 14.8 lbf/in., T2 = 700°R. The mass flow rate of air entering the turbine is 5 lb/s, and 65,000 Btu/h of energy is rejected by heat transfer. Neglecting kinetic and potential energy effects, determine the power developed, in hp. hp We = the tolerance is +/-2%
Can some one solve this question please Q4) A steam turbine at steady state is operated...
Can some one solve this question please
Q4) A steam turbine at steady state is operated at part load by throttling the steam to a lower pressure before it enters the turbine. Before throttling, the pressure and temperature are, respectively, 1.5 MPa and 320°C. After throttling, the pressure is 1 MPa. At the turbine exit, the steam is at 8 kPa and a quality of 90%. Heat transfer with the surroundings and all kinetic and potential energy effects can be...
An existing steam turbine operating on a reheat Rankine cycle in which the first stage turbine...
An existing steam turbine operating on a reheat Rankine cycle in
which the first stage turbine has an inlet pressure of 12.5MPa and
inlet temperature of 550 degree celcius. The second stage has an
inlet temperature of 500 degree celcius. Assuming both turbines and
water pump run at 100% isentropic efficiency. The steam leaves the
condenser as saturated liquid at 15kPa.
Based on the set up above, the engineer decides to add an open
feedwater heater (FWH) to the reheat...
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...
Water vapor at 5 MPa, 320 C enters a turbine operating at steady state and expands...
Water vapor at 5 MPa, 320 C enters a turbine operating at steady
state and expands to 0.1 bar. The mass flow rate is 6.52 kg/s, and
the isentropic turbine efficiency is 92%. Stray heat and kinetic
and potential energy effects are negligible. Determine the power
developed by the turbine in kW.
ht 6/3 of En Help I S Water vapor at 5 MPa, 320°C enters a turbine operating at steady state and expands to 0.1 bar. The mass flow...
i got s1=7.53 and p2=1bar can you explain intetpolating with specific entropy to find the value...
i got s1=7.53 and p2=1bar
can you explain intetpolating with specific entropy to find
the value of h2s which is 2743?
please explain how to find this value with indicated tables
and clear details/laws
EXAMPLE 6.11 Determining Turbine Work Using the Isentropic Efficiency A steam turbine operates at steady state with inlet conditions of p1 5 bar, Ti 320°C. Steam leaves the tur- bine at a pressure of 1 bar. There is no significant heat transfer between the turbine and...
4. A regenerative two-stage gas turbine with reheat operating on
the standard-air Brayton cycle is illustrated in Figure 3. In an
ideal Brayton cycle, the processes in the turbines and compressor
are adiabatic and isentropic, and the air flows through the
combustor and heat exchangers at constant pressure.
a) Show that the maximum total work output is
developed when the pressure ratio is the same across each stage, if
the temperature at the inlet to each turbine stage is the...
Air enters the turbine stage 1 of a gas turbine with reheat at 1200 kPa, 1200 K, and expands to 100 kPa in two stages. Between the turbine stages, the air is reheated at a constant pressure of 350 kPa to 1200 K. ein lin Combustor Reheat combustor T. = 881.4K To = 1200 K Po = 350 kPa b 2 3 a Turbine stage 2 Turbine stage 1 T3 = 1200 K P3 = 1200 kPa Compressor h4 =...
Problem 4.029 Air expands through a turbine operating at steady state. At the inlet, P1 = 150 lbf/in.2, T1 = 1400ºR, and at the exit, P2 = 14.8 lbf/in., T2 = 700°R. The mass flow rate of air entering the turbine is 5 lb/s, and 65,000 Btu/h of energy is rejected by heat transfer. Neglecting kinetic and potential energy effects, determine the power developed, in hp. hp We = the tolerance is +/-2%
Can some one solve this question please
Q4) A steam turbine at steady state is operated at part load by throttling the steam to a lower pressure before it enters the turbine. Before throttling, the pressure and temperature are, respectively, 1.5 MPa and 320°C. After throttling, the pressure is 1 MPa. At the turbine exit, the steam is at 8 kPa and a quality of 90%. Heat transfer with the surroundings and all kinetic and potential energy effects can be...
An existing steam turbine operating on a reheat Rankine cycle in
which the first stage turbine has an inlet pressure of 12.5MPa and
inlet temperature of 550 degree celcius. The second stage has an
inlet temperature of 500 degree celcius. Assuming both turbines and
water pump run at 100% isentropic efficiency. The steam leaves the
condenser as saturated liquid at 15kPa.
Based on the set up above, the engineer decides to add an open
feedwater heater (FWH) to the reheat...
Water vapor at 5 MPa, 320 C enters a turbine operating at steady
state and expands to 0.1 bar. The mass flow rate is 6.52 kg/s, and
the isentropic turbine efficiency is 92%. Stray heat and kinetic
and potential energy effects are negligible. Determine the power
developed by the turbine in kW.
ht 6/3 of En Help I S Water vapor at 5 MPa, 320°C enters a turbine operating at steady state and expands to 0.1 bar. The mass flow...
i got s1=7.53 and p2=1bar
can you explain intetpolating with specific entropy to find
the value of h2s which is 2743?
please explain how to find this value with indicated tables
and clear details/laws
EXAMPLE 6.11 Determining Turbine Work Using the Isentropic Efficiency A steam turbine operates at steady state with inlet conditions of p1 5 bar, Ti 320°C. Steam leaves the tur- bine at a pressure of 1 bar. There is no significant heat transfer between the turbine and...
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