Global ETD Search
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Showing 1 to 11 of 11 for “"primary air"”.
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Small-Scale Batch-Fed Biomass Gasification and Combustion
… products is achieved through a staged process. Air staging may be performed by providing a limited amount of primary air from below and secondary air downstream of the solid fuel bed. When lit from the top of the fuel bed this is called a reverse downdraft process. The air supply has a major …
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Reliability Analysis of Boeing's Dreamlifter Large Cargo Freighter
Proper maintenance is critical to keep aircraft flying through their designated service life. And once an aircraft reaches the end of its operational life, or if maintenance and repair costs exceed the cost of flying a new aircraft, it is typically replaced, retired, and dismantled. The typical …
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Study of biomass combustion characteristics for the development of a catalytic combustor/gasifier
… to burn combustibles in effluent generated by primary combustion or gasification of biomass fuels. Computer control of primary and secondary air flow rates allow control of the devices output power while maintaining fuel-lean or stoichiometric conditions in the effluent entering the catalytic …
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An On-line Test for Polycyclic Aromatic Hydrocarbons in the Flue Gas from Coal Combustion in an FBC System
… bed height, fluidizing velocity, excess air ratio, and the ratio of secondary air to primary air (air staging combustion) on the emissions of PAHs were studied. The results indicated that the emissions of PAHs in an FBC system were dependent on the combustion conditions. PAHs are mainly …
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Characteristics of pine needle combustion in a semi-gasifier burner
… temperature in a configured burner when altering primary and secondary airflow into the burner. Experiments showed that pine needles in a semi-gasifier combust in two regimes--one characterized by secondary combustion of volatiles released from the primary burn of raw pine needles, and another …
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Investigations of the Effects of Flame Configuration on the Combustion of Laminar Diffusion Flame
… decreased soot and NO formation. Preheating of primary air in DIDF results in more NO formation because flame temperature becomes higher. Elevated operating pressure has great effect on DIDF too. When the operation pressure is elevated, narrower flame is formed; more soot and more NO are …
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The effect of operating conditions on emissions from a two-stage lump coal combustor
… coal. The parameters that were varied include primary air mass flow rate, secondary air mass flow rate, secondary air temperature, secondary air inlet velocity, and secondary air swirl. Each parameter was varied independently to attempt to isolate its effect on emissions. In addition, radial …
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Effects of multi-circular jet plates on the spray and flame characteristics of internal mixing air-assisted atomizer
The mixing of fuel and air plays a major role in the spray and flame behaviour, hence, affects the combustion performance and emissions of the internal mixing air�assisted atomizers. This research aims to determine the effects of multi-circular jet (MCJ) plates on the spray behavior and flame …
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Wireless ATM Networks Medium Access Control with Adaptive Parallel Multiple Substream CDMA Air-inteface
… code-division-multiple-access (DS-CDMA) air-interface method has, such as inherent robustness against multipath fading, better resilience against security infringement attempts, and greater overall capacity compared to the TDMA method as proven in the cellular telephone industry. The main …
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Quantifying Air Distribution, Ventilation Effectiveness and Airborne Pollutant Transport in an Aircraft Cabin Mockup
… during flight inspired this research into cabin air quality, which is closely related to its airflow distribution, ventilation effectiveness and airborne pollutant transport. The experimental facility is a full-scale aircraft cabin mockup. A volumetric particle tracking velocimetry (VPTV) …
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Snižování obsahu spalitelných látek v úletovém popelu
Práca pojednáva o vzniku, využití, výhodách a nevýhodách fluidnej vrstvy. Ďalej popisuje závod Elektrárne Vojany SE a.s., proces výroby a použitú technológiu cirkulačných fluidných kotlov s ich prevádzkovými nedostatkami. Práca zhŕňa návrhy riešenia nedostatkov podané Technologickou univerzitou v …