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Design and Development of a Porous Injector for Gaseous Fuels Injection in Gas Turbine Combustor

Meeboon, Non
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1427813298

Abstract Details

2015, MS, University of Cincinnati, Engineering and Applied Science: Aerospace Engineering.
A novel porous injector is designed for injection of gaseous fuel in land based gas turbine combustors. The injector is tested at atmospheric conditions at Combustion Research Laboratory, University of Cincinnati. In the present study, seven injector configurations are tested for mixing quality, LBO limits and emissions. For mixing studies, the CO2 technique is adopted to evaluate the fuel-air mixing under atmospheric conditions of the porous injector. The experiments are carried out at 4% pressure drop condition across the injector. The CO2 concentrations are converted to fuel mass fractions for the comparison. A comparison between the top/bottom injections, center/no center injection and 7/30 micron porous tubes show that these configurations do not impact the fuel-air mixing distribution. PIV measurements are carried out in non-reacting as well reacting conditions. Velocity profiles are obtained at a 1%-4% pressure drop condition. The experiments are carried out with and without combustor. A weak outer recirculation zone is observed downstream of the injector in the combustor. The velocity profiles are same at the exit plane of the injector with and without combustor. The velocity decreases gradually along the combustor. The ignition and lean blow out limit are observed to increase as the pressure drop increases. The flame liftoff distance is found to increase as the pressure drop increases. The NO, CO, and O2 emissions are evaluated at the downstream of the porous injector at 6" from the entrance of the combustor. The results show that the NOx emissions are ~ 7 ppm @ 15% O2.
San-Mou Jeng, Ph.D. (Committee Chair)
Umesh Bhayaraju, Ph.D. (Committee Member)
Samir Tambe, Ph.D. (Committee Member)
100 p.
Aerospace Materials
Porous; Injector; Gaseous fuel; Gas turbine; Combustor; Fuel-air mixing

Recommended Citations

Citations

  • Meeboon, N. (2015). Design and Development of a Porous Injector for Gaseous Fuels Injection in Gas Turbine Combustor [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1427813298

    APA Style (7th edition)

  • Meeboon, Non. Design and Development of a Porous Injector for Gaseous Fuels Injection in Gas Turbine Combustor. 2015. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1427813298.

    MLA Style (8th edition)

  • Meeboon, Non. "Design and Development of a Porous Injector for Gaseous Fuels Injection in Gas Turbine Combustor." Master's thesis, University of Cincinnati, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1427813298

    Chicago Manual of Style (17th edition)

ucin1427813298
922
© 2015, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.