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Showing 1 to 20 of 37 for “"Combustion system"”.
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CFD Simulation of Chemical Looping Combustion System
… to approximately 59% by 2050. Chemical looping combustion (CLC) is one of the most promising cost-effective technologies that can be retrofitted onto existing power plants for CCS. The main drawback attributed to CLC is a very low confidence level as a consequence of the lack of maturity of the …
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Nitric-Oxide Formation in a Hydrocarbon-Air Combustion System
Made available in DSpace on 2014-12-10T22:48:22Z (GMT). No. of bitstreams: 1 7412124.pdf: 4387110 bytes, checksum: b41f7bf378c2b348c36f90ed3f5d7490 (MD5) Previous issue date: 1973
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Development of a catalytic combustion system for the MIT Micro Gas Turbine Engine
… of a hydrocarbon-fueled catalytic micro-combustion system is presented. A conventionally-machined catalytic flow reactor was built to simulate the micro-combustor and to better understand the catalytic combustion at micro-scale. In the conventionally-machined catalytic flow reactor, …
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Development of a high power density combustion system for a silicon micro gas turbine engine
… fabrication, packaging and testing of the first combustion system for a silicon micro heat engine. The design and operation of a microcombustor is fundamentally limited by the chemical reaction times of the fuel, by silicon material and fabrication constraints, and by the inherently non-adiabatic …
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Structure and Dynamics of a Reacting Jet Injected into a Vitiated Crossflow in a Staged Combustion System
… of the fuel, also referred to as staged combustion, is being studied by gas turbine manufacturers as a means of increasing the power output of the gas turbine systems with minimal contribution to NOx emission. A reacting jet issuing into a high pressure vitiated cross flow operating at …
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Development of air/fuel ratio control and secondary combustion for a commercial-scale biomass-fueled boiler
… testing, and modeling of a multi-fuel biomass combustion system is described. The system is developed by adding air/fuel ratio control and catalytic secondary combustion to a commercially available 150 kW biomass-fueled boiler. The basis of the air/fuel ratio control system is an inexpensive …
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Spectroscopic characterization of molecular and atomic iodine
… of iodine after it has been produced from a combustion system and how such a system can be studied. In particular, this investigation probes the temperature dependence of four different molecular iodine spectral band heads at 588, 615, 631, and 636 nanometers as a means to isolate one or more …
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Combustion optimization in a hydrogen-enhanced lean burn SI engine
… attractive performance incentives. Lowered combustion temperatures inhibit NO[sub]x pollutant formation while reduced manifold throttling minimizes pumping losses, leading to higher efficiency. These benefits are offset by the reduced combustion speed of lean mixtures, which can lead to high …
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Study of biomass combustion characteristics for the development of a catalytic combustor/gasifier
… conversion process uses close-coupled catalytic. combustion 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 …
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Rayleigh Flow of Two-Phase Nitrous Oxide as a Hybrid Rocket Nozzle Coolant
… nitrous oxide is utilized as the oxidizer in the combustion system. Because of its availability, the same two-phase (gas and liquid) nitrous oxide that is used in the combustion system is also routed around the throat of the hybrid rocket’s converging-diverging nozzle as a coolant. While this …
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Determination of the effectiveness of a Hot Tube igniter for initiating HCCI combustion
… Compression Ignition (HCCI) is a new internal combustion system that promises high efficiency and dramatically reduced nitrous oxide (NOJ and particulate matter (PM) emissions when compared to current spark ignition (SI) and compression ignition (CI) engine technologies. In its simplest form, …
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Studio e sviluppo di un motore a 2 tempi diesel veloce di nuova concezione per applicazioni automobilistiche
… (called HSD2), featuring a specifically designed combustion system, aimed to reduce weight, size and manufacturing costs, and improving pollutant emissions at partial load. The present work is focused on the analysis of the combustion and the scavenging process, investigated by means of a version …
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Solution combustion catalysts for the water-gas shift reaction
… catalyst synthesis techniques. Solution combustion synthesis (SCS) is one such technique that could be used since it allows for the preparation of highly-dispersed Pt oxide particles on low surface area CeO2 with a reproducible metal loading and a defined Pt particle size. The aim of this …
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Real-Time Prediction of Lean Blowout using Chemical Reactor Network
… monitoring for the real-time prediction of combustion system proximity to LBO. The approach makes use of (1) real-time temperature measurements in the reactor, coupled with (2) the use of a real-time chemical reactor network (CRN) model to interpret the data as it is collected. The approach …
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Subharmonic and Non-Subharmonic Pulsed Control of Thermoacoustic Instabilities: Analysis and Experiment
… behind pulsed controllers. It is shown that the combustion system can be treated as a linear system, thus meaning that frequency components of the control signal at the desired instability frequency are the dominant means of control, with nonlinear effects only serving to slightly reduce the gain …
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ARRAYS OF MILLIMETER-SCALE RUBBER COMBUSTION ENGINES
… thermal motion design principles, I investigate combustion’s potential to be a power-dense mm-scale actuation modality. With my colleagues, we find that oxygen-enriched mixtures of hydrocarbons, when ignited in molded rubber chambers, quickly inflate thin elastomeric “pistons” outward, producing …
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Design and Experimental Characterization of Electrostatically Assisted Automotive Fuel Injectors
… charge transfer. The effect of charge on the combustion process was investigated by capturing high speed video of charged and non-charged droplets composed of blends of ethanol and isooctane. Substantial changes in droplet morphology depending on the polarity of the charge applied were found. …
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Combustion systems for power-MEMS applications
… experimental testing, and modeling of the combustion system. Two fundamentally different combustion systems are presented; an advanced homogenous gas-phase microcombustor and a heterogeneous catalytic microcombustor. An advanced gas-phase microcombustor consisting of a primary and …
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Development of a low-firepower continuous feed biomass combustor
… is the thermal treatment of human feces in a combustion system. Colorado State University's Advanced Biomass Combustion Lab has been working on thermal treatment systems as part of the Bill and Melinda Gates Foundation Reinvent the toilet challenge for over 7 years. The goal is to develop …
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Simulations And Experiments Of Fuel Injection, Mixing And Combustion In Di Gasoline Engines
… in detail the interactions of fuel spray and combustion system, such as air-fuel mixing, in-cylinder flow development, surface wetting, and turbulence intensity. The characterizations of the internal nozzle flow of DI injector are first studied using the multidimensional computational fluid …
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