Question

An adiabatic gas turbine uses air to produce work. Air expands adiabatically from 600 kPa and...

An adiabatic gas turbine uses air to produce work. Air expands adiabatically from 600 kPa and 287 C to 90 kPa and 67 C. Take specific heats at room temperature (300 K). a) Find the isentropic efficiency of the turbine. b) Find the work produced by the turbine for a mass flow rate of 2.5 kg/s. c) If the mass flow rate of air is again 2.5 kg/s, find the entropy generation under steady conditions.

Engineering   Chemical-Engineering   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
NO INTERPOLATION REQUIRED Air enters an adiabatic turbine at 1000 kPa and 1625 degrees C (state...
NO INTERPOLATION REQUIRED Air enters an adiabatic turbine at 1000 kPa and 1625 degrees C (state 1) with a mass flow rate of 5 kg/s and leaves at 100 kPa the isentropic efficiency of the turbine is 85%. Neglecting the kinetic energy change of the steam, and considering variable specific heats, determine: a. the isentropic power of the turbine Isentropic power in kW b. the temperature at the turbine exit temperature at exit in degrees C c. the actual power...
Steam enters an adiabatic turbine at 5 Mpa 500 oC with a mass flow rate of...
Steam enters an adiabatic turbine at 5 Mpa 500 oC with a mass flow rate of 2 kg/s and leaves at 100 kpa. The isentropic efficiency of the turbine is 90%. Find (12 points) (a) Actual work output of the turbine _______________ (7 points) b) Maximum work output of the turbine_______________(3 points) (c) Entropy change during this process __________________________(2 points)
Water vapor at 6 MPa, 500°C enters a turbine operating at steady state and expands to...
Water vapor at 6 MPa, 500°C enters a turbine operating at steady state and expands to 20 kPa. The mass flow rate is 3 kg/s, and the power developed is 2626 kW. Stray heat transfer and kinetic and potential energy effects are negligible. Determine: (a) the isentropic turbine efficiency and (b) the rate of entropy production within the turbine, in kW/K.
Argon gas enters an adiabatic turbine at 800°C and 1.5 MPa at a rate of 80...
Argon gas enters an adiabatic turbine at 800°C and 1.5 MPa at a rate of 80 kg/min and exhausts at 200 kPa. If the power output of the turbine is 300 kW, determine the isentropic efficiency of the turbine. Use the table containing the ideal gas specific heats of various common gases. The isentropic efficiency of the turbine is  %.
An adiabatic compressor is used to pressurize air from 100 kPa to 1900 kPa. If the...
An adiabatic compressor is used to pressurize air from 100 kPa to 1900 kPa. If the air entering the compressor is at 300 K, and the isentropic efficiency of the air is 75 %, then calculate the required work by performing an: (a) approximate analysis (assume 300 K values for specific heats) (b) exact analysis (variable specific heats)
Air is expanded isentropically in an adiabatic turbine, to produce 115 kW of power. If the...
Air is expanded isentropically in an adiabatic turbine, to produce 115 kW of power. If the mass flow rate is 0.75 kg/s, and the air at the exit is 500 K and 155 kPa, then what is the temperature and pressure at the inlet of the turbine? (a) The temperature is? K (b) The pressure is? kPa NOTE: Do NOT approximate the air as having a constant specific heat.
An air turbine with inlet conditions of 500 kPa, 327 C operates in steady flow and...
An air turbine with inlet conditions of 500 kPa, 327 C operates in steady flow and has an actual power output of 70 kW. The discharge pressure is 100 kPa and the turbine has an efficiency of 0.8 at these operating conditions. Consider specific heats constant. a) Calculate the actual mass flow rate at the turbine exit. b) Calculate the actual turbine exit temperature. c) Show the actual and ideal processes on a T-s and P-v diagram.
Ammonia is brought from saturated vapor at 300 kPa to 1400 kPa, 140oC in a steady...
Ammonia is brought from saturated vapor at 300 kPa to 1400 kPa, 140oC in a steady flow adiabatic compressor. Thermodynamic properties of ammonia at initial and final states are given as : h1= hi = 1431.7 kJ/kg, s1 = s­i = 5.4565 kJ/kg-K h2= he = 1752.8 kJ/kg, s2= se = 5.7023 kJ/kg-K          h2,s = he,s = 1656.08 kJ/kg a) Find the actual specific work input to the compressor. b) Calculate the specific work input to the compressor for isentropic...
Air at 277 oC and 1000 kPa enters a turbine operating at steady state with a...
Air at 277 oC and 1000 kPa enters a turbine operating at steady state with a mass flow rate of 70 kg/hr. It exits the turbine at 27 oC and 700 kPa. During this process heat is added from the surroundings at 77 oC to the turbine at a rate of 1000 kJ/hr. Using variable specific heats, determine whether this claim is correct. Justify your answer.
Consider an adiabatic turbine. At steady mass flow rate of 10 kg/s, steam enter the turbine...
Consider an adiabatic turbine. At steady mass flow rate of 10 kg/s, steam enter the turbine at 4.5 MPa, 600°c and 85 m/s and leaves the turbine at 40 kPa, quality of 0.8 and 50 m/s. Determine : a) the power output b) the turbine inlet area
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT