mech3020-s11-hw05

# mech3020-s11-hw05 - enters the ﬁrst compression stage at...

This preview shows page 1. Sign up to view the full content.

MECH 3020 Thermodynamics II: Homework set #5, Due 2/4 1. Consider a simple and ideal gas turbine cycle. Inlet conditions are 300 K, the pressure ratio is 8, and the maximum temperature is 1400 K. (a) Calculate the work per unit mass and the thermal efficiency assuming the compressor and turbine are isentropic. Assume constant specific heats. (b) The compressor is now made reversible and isothermal. Calculate net work and thermal efficiency. (c) Along with the changes in b), an ideal regenerator is now installed. Perform the same calculations. 2. A gas turbine power cycle employs a two–stage compressor with intercooling and a regenerator. Air
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: enters the ﬁrst compression stage at 300 K and 1 atm, and is compressed to 3 atm. The air is then cooled in the intercooler to 310 K, followed by the second compression stage to 9 atm. The air leaves the combustor at 1400 K, and a single turbine is used to expand the air. The regenerator has an eﬀectiveness of 0.9, both compressor stages are isentropic, and the turbine has an isentropic eﬃciency of 0.85. The engine produces a net power output of ˙ W =2 MW. Calculate the volumetric ﬂow rate of air entering the cycle and the cycle thermal eﬃciency. Assume constant speciﬁc heats. 1...
View Full Document

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern