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  CARS AND SAMPLE PROBE MEASUREMENTSIN TWO PILOT-SCALE NATURAL GAS FLAMES
 
 
Titel: CARS AND SAMPLE PROBE MEASUREMENTSIN TWO PILOT-SCALE NATURAL GAS FLAMES
Auteur: Hughes, P. M.
Lacelle, R. J.
Wong, J.
Moffatt, B.
Verschenen in: Combustion science and technology
Paginering: Jaargang 175 (2003) nr. 2 pagina's 393-420
Jaar: 2003-02
Inhoud: The design of a reliable low-NO x burner requires a good understanding of the mixing between the fuel and air jets. This is true both for technologies using staging of the combustion air and for those using exhaust gas recirculation. Therefore, there is a need for detailed measurements in the near-burner region to validate the theories on which the burner technology is based and to better understand the processes involved in this region of the furnace. This article presents intrusive measurements of conventional combustion products (O 2 , CO 2 , CO, and NO x ) and mean and fluctuating components of temperature using a laser-based measurement system (CARS) in two natural gas flames produced by two commercially available burners. Based on these measurements, the burners are compared with respect to combustion performance. The low-NO x burner produced similar amounts of NO x compared to the other burner. The reason for this is found in the differences in the fluctuating component of gas temperature in the flames from these burners. The low-NO x burner is shown to have broad temperature profiles resulting in much larger regions where the temperature is above the 1800 K limit for NO x formation compared to the high-NO x burner.
Uitgever: Taylor & Francis
Bronbestand: Elektronische Wetenschappelijke Tijdschriften
 
 

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