Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 20 for “"biomass combustion"”.
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Study of biomass combustion characteristics for the development of a catalytic combustor/gasifier
… reported here explored, a "new" approach to biomass energy conversion for small-scale process heat-applications. The conversion process uses close-coupled catalytic. combustion to burn combustibles in effluent generated by primary combustion or gasification of biomass fuels. Computer control …
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Experimental and Modeling Investigations of Biomass Particle Combustion
… a comprehensive analysis of entrained-flow biomass combustion processes. Experimental and theoretical investigations indicate how particle shape and size influence biomass combustion rates. Experimental samples include flake-like, cylinder-like, and equant (nearly spherical) shapes with …
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Fuel-NOx Formation during Low-Grade Fuel Combustion in a Swirling-Flow Burner
… behavior in the near-burner region during biomass combustion is one of major factors preventing widespread use of this renewable fuel in pulverized coal power plants. The current research is aimed to investigate the impact of biomass cofiring on NO formation in the near-burner region …
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Agglomeration of Bed Particles in Low-Temperature Black Liquor Gasification
… has increased the desire for and the study of biomass fuels. Biomass combustion produces less carbon monoxide as well as other greenhouse gases. Black liquor is a byproduct from the Kraft process in making paper. Black liquor can be gasified and used as a fuel in recovery boilers and fluidized …
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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 …
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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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Combustion of pelletized empty fruit bunch and oil palm shell in a swirling fluidized bed combustor
… for global warming. In countries like Malaysia, biomass is available in abundance thus making it the preferred alternative fuel in comparison to other sources. One of the popular means of biomass combustion is through fluidized bed system. At present, conventional fluidized bed only provides …
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CFD – DEM Modeling and Parallel Implementation of Three Dimensional Non- Spherical Particulate Systems
… systems in practical applications such as biomass combustion, blood cellular systems and granular particles in fluidized beds, have often been computationally represented using spherical surfaces, even though the majority of particles in archetypal fluid-solid systems are non-spherical. …
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Assessment of biomas fuel use and its association with acute respiratory infections among under-five children in Zambia
… people cook and heat food in their homes using biomass fuels like wood, crop wastes, charcoal, coal and dung. Up to 81% of Sub Sahara Africa (SSA) relies on biomass fuel for cooking. In Zambia, about 98% of rural households and 63% in urban areas use biomass fuel as their main source of cooking …
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Evaluation of wood biomass utilization for the greenhouse industry in British Columbia
… industry is considering the use of wood biomass, mainly wood pellets and wood residue, to decrease the natural gas demand. However, the long-term economic value, the air quality emission, and the long-term resource availability are the main barriers for the industry to convert into wood …
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CFD study of the combustion of innovative fuels in blast furnaces for sustainable iron making
… countermeasure for sustainable ironmaking. Biomass and hydrogen are regarded as promising renewable fuels to mitigate CO2 emission, and low-rank coal is regarded as flexible fuel to maintain the supply chain. Pulverised coal injection (PCI) technology has the readiness to accommodate these …
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Evaluation of zero-dimensional furnace models for biomass-fired boilers with the aid of CFD and plant measurements
Biomass combustion is an important and renewable source of energy, and its efficient utilisation has become an area of active research. Modelling biomass boilers is critical for optimising their design, performance, and control. A key challenge is accurately predicting waterwall heat uptake, …
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Developing Innovative Heat Exchangers in a Small-Medium Enterprise: Modelling and Implementation of Pillow Plate Heat Exchangers
… heat exchangers for corrosive diesel exhaust and biomass combustion gases. This section is also a testimony of the Return on Investment of R&D investment in the dynamic and customer focused environment of a SME; the product lines created from the PPHE prototypes went on generating revenues useful …
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Optical properties of light absorbing organic carbon aerosol and its mixtures at high sub-saturated humidities
… aerosol (LAOC) constitute a large fraction of biomass burning emissions and biomass burning is the largest source of primary organic aerosol in the atmosphere. This laboratory study investigated light extinction, light scattering and light absorption under controlled RH conditions (up to 95% …
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Open-Source tools for practical heat integration and utility system evaluation
… technologies that recover surplus steam from biomass combustion.
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Upgrading biomass by hydrothermal and chemical conditioning
… as torrefaction or mild pyrolysis, dry solid biomass is treated in an inert gas environment in a temperature range of 200-300oC for more than one hour. In hydrothermal carbonization (HTC), also known as wet torrefaction, biomass is treated with hot compressed subcritical water (200-260oC) for …
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Design, analysis and experimental investigation of a new scroll expander based trigeneration system
… of sources including solar panel collectors, biomass combustion, biofuel, recovered waste heat etc. Due to the trigeneration feature, the utilization factor of the heat source or fuel energy with this system exceeds 90%. The experimental result shows a maximum isentropic efficiency of 67% and …
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Small-Scale Batch-Fed Biomass Gasification and Combustion
Small-scale solid biomass-fuelled cookstoves are highly important to satisfy the energy demand of nearly half the world’s population. With this as a main application, biomass provides the majority of renewable energy worldwide. However, traditional cookstoves, which emit vast amounts of emissions …
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Identifikace regulované soustavy, jednotka pro spalování biomasy
Diplomová práce se zabývá identifikací reálné experimentální jednotky pro spalování biomasy. Rozebírá jednotlivé metody identifikace, volbu modelu a metody odhadu jeho parametrů, zejména s využitím metody nejmenších čtverců a analýzy přechodové charakteristiky. Popisuje obecný identifikační cyklus …
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The behaviour of gas-emitting particles in fluidised beds
… is relevant, for example, to the fluidised bed combustion of biomass, and the apparent tendency of the fuel to devolatilise predominantly near the upper surface of the bed with the attendant undesirable complications of unconverted volatile matter (VM) entering the freeboard. Inert spheres (viz. …