Preliminary Study of NO(subscript X), CO, and Lean Blowoff in a Piloted-lean Premixed Combustor. Part 1 PDF Download
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Languages : en
Pages : 8
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In order to validate the models for NO(subscript x), CO, and lean blowoff discussed in part 2 of this paper, the development of an experimental datum base was initiated. Experimental data were collected from an industrial, piloted-lean premixed, natural gas fired, can combustor rig. The experiments were designed in order to minimize testing cost and time. Independent variations of inlet pressure (8 to 14 atm), inlet temperature (550 to 750 K), and residence time (13 and 23 ms) were performed in order to gain insight into the sensitivity of the emissions levels to changes in combustor operating conditions.
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Languages : en
Pages : 8
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In order to validate the models for NO(subscript x), CO, and lean blowoff discussed in part 2 of this paper, the development of an experimental datum base was initiated. Experimental data were collected from an industrial, piloted-lean premixed, natural gas fired, can combustor rig. The experiments were designed in order to minimize testing cost and time. Independent variations of inlet pressure (8 to 14 atm), inlet temperature (550 to 750 K), and residence time (13 and 23 ms) were performed in order to gain insight into the sensitivity of the emissions levels to changes in combustor operating conditions.
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Languages : en
Pages : 8
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The characteristic time model (CTM) is a semi-empirical model for gas turbine emissions and performance. The CTM represents the essence of the dominant physical subprocesses related to combustor performance in terms of characteristic times. Properly formulated, these characteristic times account for variations in combustor geometry, fuel characteristics, and operating conditions. In this work, the capability of the CTM to correlate the piloted-LP NO(subscript x), CO and blowoff data described in part 1 of this paper is assessed.
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Languages : en
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![Preliminary Study of NO[x], CO, and Lean Blowoff in a Piloted-lean Premixed Combustor. Part 2: Modeling PDF](https://books.google.com/books/content/images/frontcover/ZKR00AEACAAJ?fife=w80-h100)
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Languages : en
Pages : 0
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Languages : en
Pages : 29
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The overall objectives of the research at Purdue are to: obtain a reduced mechanism description of high pressure NO formation chemistry using experiments and calculations for laminar lean premixed methane air flames, develop a statistical model of turbulence NO chemistry interactions using a Bunsen type jet flame, and utilize the high pressure chemistry and turbulence models in a commercial design code, then evaluate its predictions using data from an analog gas turbine combustor. Work to date has resulted in the following achievements: spatially resolved measurements of NO in high-pressure high-temperature flat flames, plus evaluation of the influence of flame radiation on the measured temperature profile; measurements of temperature and velocity PDFs for a turbulent methane/air flame were obtained for the first time, under operating conditions which allow their study in the distributed regimes, and the increase in EINO(subscript x) with equivalence ratio predicted using a chemical kinetics model; and simulation of non-reacting combustor flow fields from ambient to elevated pressure and temperature conditions and comparison of those results with experimental velocity profiles.
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Languages : en
Pages : 12
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Emission levels below 5.0 ppM NO(subscript x), with corresponding levels of 75 ppM CO (corrected to 3% O2), were achieved in a pulse combustor operating in a lean premixed mode. Both NO(subscript x) and CO concentrations were invariant with the total mass flow rate, but NO(subscript x) and CO concentrations did vary with the rate of microscopic mixing.
Author: Andrés Colorado
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Category : Fuel switching
Languages : en
Pages : 42
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Author: Tsan-Hai Chue
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Languages : en
Pages : 280
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Author: Y. Michou
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Languages : en
Pages :
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Languages : en
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