Progress on 2 MW STI8 gas turbine from Pratt & Whitney Canada

Title: Progress on 2 MW STI8 gas turbine from Pratt & Whitney Canada

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Abstract

In 1995 Pratt & Whitney Canada announced their intention to offer industrial and marine versions of the PW100 series aircraft gas turbine widely used in turboprop applications. The new ST18 gas turbine is rated in the two megawatt range for industrial and marine applications and offers an especially compact and lightweight gas turbine for this output level. As in other aeroderivative designs from Pratt & Whitney Canada, headquartered in Longueuil, Quebec, the ST18 gas turbine features a centrifugal compressor design. The two-stage centrifugal compressor, with a unique high efficiency external pipe diffuser system connecting the low pressure and high pressure compressor, achieves an overall compression ratio of 15:1, with air flow of 7.7 kg/s. A relatively good thermal efficiency level of about 30% is achieved in this design. For exhaust emission control purposes, water injection in excess of a 1:1 ratio is utilized in the reverse flow annular combustion system to achieve less than 35 ppm NO{sub x} on natural gas fuel. This paper provides some of the design details of this gas turbine and changes made for the industrial and marine configuration. 4 figs.

Publication Date:: Wed Jan 01 00:00:00 EST 1997

OSTI Identifier:: 460024

Resource Type:: Journal Article

Journal Name:: Diesel and Gas Turbine Worldwide

Additional Journal Information:: Journal Volume: 29; Journal Issue: 1; Other Information: PBD: Jan-Feb 1997

Country of Publication:: United States

Language:: English

Subject:: 33 ADVANCED PROPULSION SYSTEMS; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; GAS TURBINES; DESIGN; COMPRESSORS; CENTRIFUGATION; EXHAUST GASES; NITROGEN OXIDES; COGENERATION; TEMPERATURE DEPENDENCE; COMBUSTION CHAMBERS; FUEL CONSUMPTION

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                    . Progress on 2 MW STI8 gas turbine from Pratt & Whitney Canada.  United States: N. p., 1997. 
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                    . Progress on 2 MW STI8 gas turbine from Pratt & Whitney Canada.  United States.

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                    . 1997.  
        "Progress on 2 MW STI8 gas turbine from Pratt & Whitney Canada".  United States.

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@article{osti_460024,

  title        = {Progress on 2 MW STI8 gas turbine from Pratt & Whitney Canada},

  author       = {},

  abstractNote = {In 1995 Pratt & Whitney Canada announced their intention to offer industrial and marine versions of the PW100 series aircraft gas turbine widely used in turboprop applications. The new ST18 gas turbine is rated in the two megawatt range for industrial and marine applications and offers an especially compact and lightweight gas turbine for this output level. As in other aeroderivative designs from Pratt & Whitney Canada, headquartered in Longueuil, Quebec, the ST18 gas turbine features a centrifugal compressor design. The two-stage centrifugal compressor, with a unique high efficiency external pipe diffuser system connecting the low pressure and high pressure compressor, achieves an overall compression ratio of 15:1, with air flow of 7.7 kg/s. A relatively good thermal efficiency level of about 30% is achieved in this design. For exhaust emission control purposes, water injection in excess of a 1:1 ratio is utilized in the reverse flow annular combustion system to achieve less than 35 ppm NO{sub x} on natural gas fuel. This paper provides some of the design details of this gas turbine and changes made for the industrial and marine configuration. 4 figs.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/460024},
  journal      = {Diesel and Gas Turbine Worldwide},
number       = 1,

  volume       = 29,

  place        = {United States},

  year         = {Wed Jan 01 00:00:00 EST 1997},

  month        = {Wed Jan 01 00:00:00 EST 1997}

}

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