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- W282151567 abstract "A literature review describes the development of interactive and group combustion (GC) studies, the bubble combustion (BC) model, the pulverized coal gasification and combustion (PCGC) model for burners, the packet combustion (PACC) model for engines, and various NO/sub x/ models. The group combustion (GC) model for a cloud of coal-water slurry drops in a confined volume is described with correction factors. The heat transfer model is given with results for nodal temperatures of cylinder head utilizing iron componet through an engine cycle. The NO/sub x/ model is also given with incorporation into the PACC model;results are given for NO/sub x/ emissions as a function of crank angle, injection timing, inlet manifold temperature etc. Results from the GC model are currently being incorporated in the PACC model. The correction factor from the nonsteady GC model varies from 0.2 to 0.1. Pressure vs time plot confirms GE bomb reactor data. Ignition starts as a heterogeneous process, leading to pyrolysis and the heterogeneous and homogeneous combustion of volatiles. In the preliminary results of the heat transfer model, the temperature swing of interior node of cylinder head is 20)degree)K for insulated case and 35)degree)K for the iron case. The engine cycle simulation for coal-fueled,more » reciprocating, internal combustion engines is expanded to include calculations of NO exhaust emissions. Calculations have been completed for a coal-wate slurry fuel. Engine performance parameters are in good agreement with published values. Computed exhaust NO concentrations for both diesel and coal-water slurry fuels are in fair agreement with preliminary experiment. In general, the exhaust NO concentrations are lower for the coal-water slurry fuel relative to the diesel fuel. The thermal NO production for the coal-water slurry fuel is a strong function of the coalwater mass ratio. The NO from fuel-bound nitrogen could be significant for coal-water slurry fuels. 52 figs., 14 tabs.« less" @default.
- W282151567 created "2016-06-24" @default.
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- W282151567 date "1987-11-01" @default.
- W282151567 modified "2023-09-27" @default.
- W282151567 title "Performance and emissions of coal-fueled engines using group combustion theory: Interim topical report, 1986-1987" @default.
- W282151567 hasPublicationYear "1987" @default.
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