کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6681267 1428079 2018 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fostering distributed combustion in a swirl burner using prevaporized liquid fuels
ترجمه فارسی عنوان
پرورش احتراق توزیع شده در یک فیدر چرخش با استفاده از سوخت های مایع پیش رونده
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
چکیده انگلیسی
Colorless Distributed Combustion (CDC) has presented itself as an environmentally friendly combustion method with significant benefits on ultra-low emissions, uniform thermal field (pattern factor), reduced noise, mitigation of instability and enhanced flame stability. CDC requisites include controlled entrainment of hot reactive species from within the combustor and their subsequent mixing with fresh reactants to form a low-oxygen concentration high-temperature oxidizer prior to ignition. This mixture results in distributed reaction over the entire combustion volume. To date, most of the CDC research efforts have focused on gaseous fuels only. In this paper, conditions fostering distributed combustion using JP-8 and alternative ethanol fuels. Data revealed that transition to CDC can be achieved at oxygen concertation of approximately 9.5% for both the fuels. This oxygen concentration was determined based on reaction field uniformity as identified from OH∗ chemiluminescence signatures. Under distributed combustion, emissions were substantially reduced by some 95% to result in NOx emissions of less than 2 PPM with minimal impact on CO emission from both JP-8 and ethanol fuels at an equivalence ratio of 0.9, with even lower emissions at lower equivalence ratios. Combining the data obtained with liquid fuels with those from gaseous fuels revealed that, regardless of the fuel used, the oxygen concentration at which CDC prevailed can be predicted based on mixture temperature within a range of 0.75%. This knowledge enables designing a combustor to achieve CDC regardless of the fuel used. The data are useful in the design and development of fuel flexible CDC for high combustion intensity gas turbine applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Energy - Volume 211, 1 February 2018, Pages 513-522
نویسندگان
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