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Jean Koulidiati - One of the best experts on this subject based on the ideXlab platform.
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influence of engine load and fuel droplet size on performance of a ci engine fueled with Cottonseed Oil and its blends with diesel fuel
Applied Energy, 2013Co-Authors: Tizane Daho, G. Vaitilingom, Salifou K. Ouiminga, Bruno Piriou, Augustin S Zongo, Samuel Ouoba, Jean KoulidiatiAbstract:Abstract In this study, favorable conditions to achieve good combustion of Cottonseed Oil and its blends with diesel fuel in a direct injection diesel engine have been highlighted. This has been performed by analyzing fuel droplet size distribution and determining engine specific fuel consumption and thermal efficiency, combustion parameters (ignition delay, rate of heat release) and emissions (carbon monoxide (CO), nitrogen oxides (NOx) and carbon dioxide (CO2)). Results show that thermal efficiency and CO2 are almost similar for all tested fuels while the specific fuel consumption and CO emissions increase and NOx emissions decrease with increasing percentage of Cottonseed Oil in blends. Cylinder pressures are very close and rates of heat release are slightly different for Cottonseed Oil and diesel fuel. Results on droplet size analysis show that to obtain an adequate droplet size distribution, the percentage of Cottonseed Oil in diesel fuel should be limited to 40% by volume. Results on engine performance show that engine loads must be above 50%. These results are valid for diesel engines of conventional design, using low-pressure injection systems; they do not apply to modern high injection pressure engines.
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study of droplet vaporization of various vegetable Oils and blends of domestic fuel Oil Cottonseed Oil under different ambient temperature conditions
Biomass & Bioenergy, 2012Co-Authors: Tizane Daho, O Sanogo, G. Vaitilingom, B.g. Segda, Pascal Higelin, Jérémy Valette, Salifou K. Ouiminga, Jean KoulidiatiAbstract:In this work, the evaporation characteristics of different pure vegetable Oils (Cottonseed Oil, jatropha Oil, and rapeseed Oil), domestic fuel Oil (DFO) and blends of domestic fuel Oil and Cottonseed Oil have been studied using the fibre-suspended droplet evaporation technique. The constants of evaporation of pure products were determined as well as the influence of the proportion of DFO fraction on the mechanisms of vaporization process of Cottonseed Oil in the temperature range of 578 K-917 K under atmospheric pressure. The results show that the DFO evaporates completely in the range of temperatures considered in contrast to vegetable Oils that vaporize completely only for temperatures higher than or equal to 773 K. Above 873 K, the behaviour of vegetable Oils becomes similar to a single component product and the d(2) law is respected. At a given temperatures range, constants of evaporation of the three vegetable Oils are of the same order of magnitude. The results also show that blends of Cottonseed Oil and DFO vaporize following a sequential distillation mechanism: DFO is evaporating first, followed by a transient phase, and then Cottonseed Oil vaporizes following the same trends than observed for pure vegetable Oils. For low percentages of Cottonseed Oil (<= 40%) in the mixture, formation of bubbles can be observed at the end of the process at 684 K. When the concentration of vegetable Oil in the droplet increases, the mechanism of pure diffusion becomes predominant. (C) 2012 Elsevier Ltd. All rights reserved.
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study of droplet vaporization of various vegetable Oils and blends of domestic fuel Oil Cottonseed Oil under different ambient temperature conditions
Biomass & Bioenergy, 2012Co-Authors: Tizane Daho, O Sanogo, G. Vaitilingom, B.g. Segda, Pascal Higelin, Jérémy Valette, Salifou K. Ouiminga, Jean KoulidiatiAbstract:In this work, the evaporation characteristics of different pure vegetable Oils (Cottonseed Oil, jatropha Oil, and rapeseed Oil), domestic fuel Oil (DFO) and blends of domestic fuel Oil and Cottonseed Oil have been studied using the fibre-suspended droplet evaporation technique. The constants of evaporation of pure products were determined as well as the influence of the proportion of DFO fraction on the mechanisms of vaporization process of Cottonseed Oil in the temperature range of 578 K-917 K under atmospheric pressure. The results show that the DFO evaporates completely in the range of temperatures considered in contrast to vegetable Oils that vaporize completely only for temperatures higher than or equal to 773 K. Above 873 K, the behaviour of vegetable Oils becomes similar to a single component product and the d(2) law is respected. At a given temperatures range, constants of evaporation of the three vegetable Oils are of the same order of magnitude. The results also show that blends of Cottonseed Oil and DFO vaporize following a sequential distillation mechanism: DFO is evaporating first, followed by a transient phase, and then Cottonseed Oil vaporizes following the same trends than observed for pure vegetable Oils. For low percentages of Cottonseed Oil (<= 40%) in the mixture, formation of bubbles can be observed at the end of the process at 684 K. When the concentration of vegetable Oil in the droplet increases, the mechanism of pure diffusion becomes predominant. (C) 2012 Elsevier Ltd. All rights reserved.
Tizane Daho - One of the best experts on this subject based on the ideXlab platform.
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influence of engine load and fuel droplet size on performance of a ci engine fueled with Cottonseed Oil and its blends with diesel fuel
Applied Energy, 2013Co-Authors: Tizane Daho, G. Vaitilingom, Salifou K. Ouiminga, Bruno Piriou, Augustin S Zongo, Samuel Ouoba, Jean KoulidiatiAbstract:Abstract In this study, favorable conditions to achieve good combustion of Cottonseed Oil and its blends with diesel fuel in a direct injection diesel engine have been highlighted. This has been performed by analyzing fuel droplet size distribution and determining engine specific fuel consumption and thermal efficiency, combustion parameters (ignition delay, rate of heat release) and emissions (carbon monoxide (CO), nitrogen oxides (NOx) and carbon dioxide (CO2)). Results show that thermal efficiency and CO2 are almost similar for all tested fuels while the specific fuel consumption and CO emissions increase and NOx emissions decrease with increasing percentage of Cottonseed Oil in blends. Cylinder pressures are very close and rates of heat release are slightly different for Cottonseed Oil and diesel fuel. Results on droplet size analysis show that to obtain an adequate droplet size distribution, the percentage of Cottonseed Oil in diesel fuel should be limited to 40% by volume. Results on engine performance show that engine loads must be above 50%. These results are valid for diesel engines of conventional design, using low-pressure injection systems; they do not apply to modern high injection pressure engines.
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study of droplet vaporization of various vegetable Oils and blends of domestic fuel Oil Cottonseed Oil under different ambient temperature conditions
Biomass & Bioenergy, 2012Co-Authors: Tizane Daho, O Sanogo, G. Vaitilingom, B.g. Segda, Pascal Higelin, Jérémy Valette, Salifou K. Ouiminga, Jean KoulidiatiAbstract:In this work, the evaporation characteristics of different pure vegetable Oils (Cottonseed Oil, jatropha Oil, and rapeseed Oil), domestic fuel Oil (DFO) and blends of domestic fuel Oil and Cottonseed Oil have been studied using the fibre-suspended droplet evaporation technique. The constants of evaporation of pure products were determined as well as the influence of the proportion of DFO fraction on the mechanisms of vaporization process of Cottonseed Oil in the temperature range of 578 K-917 K under atmospheric pressure. The results show that the DFO evaporates completely in the range of temperatures considered in contrast to vegetable Oils that vaporize completely only for temperatures higher than or equal to 773 K. Above 873 K, the behaviour of vegetable Oils becomes similar to a single component product and the d(2) law is respected. At a given temperatures range, constants of evaporation of the three vegetable Oils are of the same order of magnitude. The results also show that blends of Cottonseed Oil and DFO vaporize following a sequential distillation mechanism: DFO is evaporating first, followed by a transient phase, and then Cottonseed Oil vaporizes following the same trends than observed for pure vegetable Oils. For low percentages of Cottonseed Oil (<= 40%) in the mixture, formation of bubbles can be observed at the end of the process at 684 K. When the concentration of vegetable Oil in the droplet increases, the mechanism of pure diffusion becomes predominant. (C) 2012 Elsevier Ltd. All rights reserved.
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study of droplet vaporization of various vegetable Oils and blends of domestic fuel Oil Cottonseed Oil under different ambient temperature conditions
Biomass & Bioenergy, 2012Co-Authors: Tizane Daho, O Sanogo, G. Vaitilingom, B.g. Segda, Pascal Higelin, Jérémy Valette, Salifou K. Ouiminga, Jean KoulidiatiAbstract:In this work, the evaporation characteristics of different pure vegetable Oils (Cottonseed Oil, jatropha Oil, and rapeseed Oil), domestic fuel Oil (DFO) and blends of domestic fuel Oil and Cottonseed Oil have been studied using the fibre-suspended droplet evaporation technique. The constants of evaporation of pure products were determined as well as the influence of the proportion of DFO fraction on the mechanisms of vaporization process of Cottonseed Oil in the temperature range of 578 K-917 K under atmospheric pressure. The results show that the DFO evaporates completely in the range of temperatures considered in contrast to vegetable Oils that vaporize completely only for temperatures higher than or equal to 773 K. Above 873 K, the behaviour of vegetable Oils becomes similar to a single component product and the d(2) law is respected. At a given temperatures range, constants of evaporation of the three vegetable Oils are of the same order of magnitude. The results also show that blends of Cottonseed Oil and DFO vaporize following a sequential distillation mechanism: DFO is evaporating first, followed by a transient phase, and then Cottonseed Oil vaporizes following the same trends than observed for pure vegetable Oils. For low percentages of Cottonseed Oil (<= 40%) in the mixture, formation of bubbles can be observed at the end of the process at 684 K. When the concentration of vegetable Oil in the droplet increases, the mechanism of pure diffusion becomes predominant. (C) 2012 Elsevier Ltd. All rights reserved.
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Optimization of the combustion of blends of domestic fuel Oil and Cottonseed Oil in a non-modified domestic bOiler
Fuel, 2009Co-Authors: Tizane Daho, G. Vaitilingom, O SanogoAbstract:This study characterizes combustion of blends of DFO (domestic fuel–Oil) and refined Cottonseed Oil produced in Burkina Faso at different percentages in a non-modified DFO burner by determining its overall performance (consumption and thermal capacity) and gas emissions (CO, CO2, O2, NO, NOx, SO2). The physical and chemical characteristics of the different blends confer on each blend the status of a special fuel requiring specific adjustment of the burner. The influence of combustion parameters such as equivalence ratio and fuel pressure is studied. Results show that emissions of CO, NOx and CO2 are similar for all fuel blends at the operating point corresponding to 0.86 equivalence ratio and 20bars fuel pressure. Whatever the fuel pressure is, SO2 emission is increasing with DFO percentage in blends. Experimental emission results obtained with suitable adjustments for a blend containing 30% Cottonseed Oil and 70% DFO are compared to the calculated results obtained using a combustion equation based on a global chemical mechanism. The results show that there is a satisfactory match between the calculation and experimental results.
Junfeng Qian - One of the best experts on this subject based on the ideXlab platform.
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cogeneration of biodiesel and nontoxic Cottonseed meal from Cottonseed processed by two phase solvent extraction
Energy Conversion and Management, 2010Co-Authors: Junfeng QianAbstract:Abstract In the present work, the preparation of biodiesel from Cottonseed Oil produced by two-phase solvent extraction (TSE) was studied. The experimental results of TSE process of Cottonseed showed that the optimal extraction conditions were 30 g samples, 240 mL extraction solvent mixture and methanol/petroleum ether volume ratio 60:40, extraction temperature 30 °C, extraction time 30 min. Under the extraction conditions, the extraction rate of Cottonseed Oil could achieve 98.3%, the free fatty acid (FFA) and water contents of Cottonseed Oil were reduced to 0.20% and 0.037%, respectively, which met the requirement of alkali-catalyzed transesterification. The free gossypol (FG) content in Cottonseed meal produced from two-phase solvent extraction could reduce to 0.014% which was far below the FAO standard. And the nontoxic Cottonseed meal could be used as animal protein feed resources. After the TSE process of Cottonseed, the investigations were carried out on transesterification of methanol with Oil–petroleum ether solution coming from TSE process in the presence of sodium hydroxide (CaO) as the solid base catalyst. The influences of weight ratio of petroleum ether to Cottonseed Oil, reaction temperature, molar ratio of methanol to Oil, alkali catalyst amount and reaction time on Cottonseed Oil conversion were respectively investigated by mono-factor experiments. The conversion of Cottonseed Oil into fatty acid methyl ester (FAME) could achieve 98.6% with 3:1 petroleum ether/Oil weight ratio, 65 °C reaction temperature, 9:1 methanol/Oil mole ratio, 4% (catalyst/Oil weight ratio, w/w) solid base catalyst amount and 3 h reaction time. The properties of FAME product prepared from Cottonseed Oil produced by two-phase solvent extraction met the ASTM specifications for biodiesel.
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cogeneration of biodiesel and nontoxic Cottonseed meal from Cottonseed through in situ alkaline transesterification
Energy & Fuels, 2009Co-Authors: Junfeng QianAbstract:In the present work the in situ alkaline transesterification of Cottonseed Oil with methanol for the production of biodiesel and nontoxic Cottonseed meal was studied. The methyl ester of Cottonseed Oil fatty acids could be produced satisfactorily by in situ alkaline transesterification of Cottonseed Oil. The experimental results of water removal pretreatment methods of milled Cottonseed showed that methanol washing was better than vacuum oven drying. After water removal pretreatment of milled Cottonseed with methanol washing, the influences of NaOH concentration in methanol, different molar ratios of methanol to Oil, reaction temperature, and reaction time on Cottonseed conversion and free gossypol content in Cottonseed meal were respectively investigated by monofactor experiments. Then the significance of the factors was investigated by orthogonal design. Reaction conditions for maximum conversion of Cottonseed Oil into FAME were identified using statistical experimental design methods. For milled cotton...
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in situ alkaline transesterification of Cottonseed Oil for production of biodiesel and nontoxic Cottonseed meal
Bioresource Technology, 2008Co-Authors: Junfeng Qian, Fei WangAbstract:Abstract The production of fatty acid methyl ester (FAME) by direct in situ alkaline-catalyzed transesterification of the triglycerides (TG) in Cottonseeds was examined. The experimental results showed that the amount of Cottonseed Oil dissolved in methanol was approximately 99% of the total Oil and the conversion of this Oil could achieve 98% under the following conditions: less than 2% moisture content in Cottonseed flours, 0.3–0.335 mm particle size, 0.1 mol/L NaOH concentration in methanol, 135:1 methanol/Oil mole ratio, 40 °C reaction temperature and 3 h reaction time. Further, the effects of co-solvent petroleum ether and methanol recycling on the Cottonseed Oil extraction and conversion were also investigated. The use of alkaline methanol as extraction and reaction solvent, which would be useful for extraction Oil and gossypol, would reduce the gossypol content in the Cottonseed meal. The free and total gossypol contents in the Cottonseed meal obtained from in situ alkaline transesterification were far below the FAO standard. And the nontoxic Cottonseed meal could be used as animal protein feed resources.
O Sanogo - One of the best experts on this subject based on the ideXlab platform.
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study of droplet vaporization of various vegetable Oils and blends of domestic fuel Oil Cottonseed Oil under different ambient temperature conditions
Biomass & Bioenergy, 2012Co-Authors: Tizane Daho, O Sanogo, G. Vaitilingom, B.g. Segda, Pascal Higelin, Jérémy Valette, Salifou K. Ouiminga, Jean KoulidiatiAbstract:In this work, the evaporation characteristics of different pure vegetable Oils (Cottonseed Oil, jatropha Oil, and rapeseed Oil), domestic fuel Oil (DFO) and blends of domestic fuel Oil and Cottonseed Oil have been studied using the fibre-suspended droplet evaporation technique. The constants of evaporation of pure products were determined as well as the influence of the proportion of DFO fraction on the mechanisms of vaporization process of Cottonseed Oil in the temperature range of 578 K-917 K under atmospheric pressure. The results show that the DFO evaporates completely in the range of temperatures considered in contrast to vegetable Oils that vaporize completely only for temperatures higher than or equal to 773 K. Above 873 K, the behaviour of vegetable Oils becomes similar to a single component product and the d(2) law is respected. At a given temperatures range, constants of evaporation of the three vegetable Oils are of the same order of magnitude. The results also show that blends of Cottonseed Oil and DFO vaporize following a sequential distillation mechanism: DFO is evaporating first, followed by a transient phase, and then Cottonseed Oil vaporizes following the same trends than observed for pure vegetable Oils. For low percentages of Cottonseed Oil (<= 40%) in the mixture, formation of bubbles can be observed at the end of the process at 684 K. When the concentration of vegetable Oil in the droplet increases, the mechanism of pure diffusion becomes predominant. (C) 2012 Elsevier Ltd. All rights reserved.
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study of droplet vaporization of various vegetable Oils and blends of domestic fuel Oil Cottonseed Oil under different ambient temperature conditions
Biomass & Bioenergy, 2012Co-Authors: Tizane Daho, O Sanogo, G. Vaitilingom, B.g. Segda, Pascal Higelin, Jérémy Valette, Salifou K. Ouiminga, Jean KoulidiatiAbstract:In this work, the evaporation characteristics of different pure vegetable Oils (Cottonseed Oil, jatropha Oil, and rapeseed Oil), domestic fuel Oil (DFO) and blends of domestic fuel Oil and Cottonseed Oil have been studied using the fibre-suspended droplet evaporation technique. The constants of evaporation of pure products were determined as well as the influence of the proportion of DFO fraction on the mechanisms of vaporization process of Cottonseed Oil in the temperature range of 578 K-917 K under atmospheric pressure. The results show that the DFO evaporates completely in the range of temperatures considered in contrast to vegetable Oils that vaporize completely only for temperatures higher than or equal to 773 K. Above 873 K, the behaviour of vegetable Oils becomes similar to a single component product and the d(2) law is respected. At a given temperatures range, constants of evaporation of the three vegetable Oils are of the same order of magnitude. The results also show that blends of Cottonseed Oil and DFO vaporize following a sequential distillation mechanism: DFO is evaporating first, followed by a transient phase, and then Cottonseed Oil vaporizes following the same trends than observed for pure vegetable Oils. For low percentages of Cottonseed Oil (<= 40%) in the mixture, formation of bubbles can be observed at the end of the process at 684 K. When the concentration of vegetable Oil in the droplet increases, the mechanism of pure diffusion becomes predominant. (C) 2012 Elsevier Ltd. All rights reserved.
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Optimization of the combustion of blends of domestic fuel Oil and Cottonseed Oil in a non-modified domestic bOiler
Fuel, 2009Co-Authors: Tizane Daho, G. Vaitilingom, O SanogoAbstract:This study characterizes combustion of blends of DFO (domestic fuel–Oil) and refined Cottonseed Oil produced in Burkina Faso at different percentages in a non-modified DFO burner by determining its overall performance (consumption and thermal capacity) and gas emissions (CO, CO2, O2, NO, NOx, SO2). The physical and chemical characteristics of the different blends confer on each blend the status of a special fuel requiring specific adjustment of the burner. The influence of combustion parameters such as equivalence ratio and fuel pressure is studied. Results show that emissions of CO, NOx and CO2 are similar for all fuel blends at the operating point corresponding to 0.86 equivalence ratio and 20bars fuel pressure. Whatever the fuel pressure is, SO2 emission is increasing with DFO percentage in blends. Experimental emission results obtained with suitable adjustments for a blend containing 30% Cottonseed Oil and 70% DFO are compared to the calculated results obtained using a combustion equation based on a global chemical mechanism. The results show that there is a satisfactory match between the calculation and experimental results.
G. Vaitilingom - One of the best experts on this subject based on the ideXlab platform.
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influence of engine load and fuel droplet size on performance of a ci engine fueled with Cottonseed Oil and its blends with diesel fuel
Applied Energy, 2013Co-Authors: Tizane Daho, G. Vaitilingom, Salifou K. Ouiminga, Bruno Piriou, Augustin S Zongo, Samuel Ouoba, Jean KoulidiatiAbstract:Abstract In this study, favorable conditions to achieve good combustion of Cottonseed Oil and its blends with diesel fuel in a direct injection diesel engine have been highlighted. This has been performed by analyzing fuel droplet size distribution and determining engine specific fuel consumption and thermal efficiency, combustion parameters (ignition delay, rate of heat release) and emissions (carbon monoxide (CO), nitrogen oxides (NOx) and carbon dioxide (CO2)). Results show that thermal efficiency and CO2 are almost similar for all tested fuels while the specific fuel consumption and CO emissions increase and NOx emissions decrease with increasing percentage of Cottonseed Oil in blends. Cylinder pressures are very close and rates of heat release are slightly different for Cottonseed Oil and diesel fuel. Results on droplet size analysis show that to obtain an adequate droplet size distribution, the percentage of Cottonseed Oil in diesel fuel should be limited to 40% by volume. Results on engine performance show that engine loads must be above 50%. These results are valid for diesel engines of conventional design, using low-pressure injection systems; they do not apply to modern high injection pressure engines.
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study of droplet vaporization of various vegetable Oils and blends of domestic fuel Oil Cottonseed Oil under different ambient temperature conditions
Biomass & Bioenergy, 2012Co-Authors: Tizane Daho, O Sanogo, G. Vaitilingom, B.g. Segda, Pascal Higelin, Jérémy Valette, Salifou K. Ouiminga, Jean KoulidiatiAbstract:In this work, the evaporation characteristics of different pure vegetable Oils (Cottonseed Oil, jatropha Oil, and rapeseed Oil), domestic fuel Oil (DFO) and blends of domestic fuel Oil and Cottonseed Oil have been studied using the fibre-suspended droplet evaporation technique. The constants of evaporation of pure products were determined as well as the influence of the proportion of DFO fraction on the mechanisms of vaporization process of Cottonseed Oil in the temperature range of 578 K-917 K under atmospheric pressure. The results show that the DFO evaporates completely in the range of temperatures considered in contrast to vegetable Oils that vaporize completely only for temperatures higher than or equal to 773 K. Above 873 K, the behaviour of vegetable Oils becomes similar to a single component product and the d(2) law is respected. At a given temperatures range, constants of evaporation of the three vegetable Oils are of the same order of magnitude. The results also show that blends of Cottonseed Oil and DFO vaporize following a sequential distillation mechanism: DFO is evaporating first, followed by a transient phase, and then Cottonseed Oil vaporizes following the same trends than observed for pure vegetable Oils. For low percentages of Cottonseed Oil (<= 40%) in the mixture, formation of bubbles can be observed at the end of the process at 684 K. When the concentration of vegetable Oil in the droplet increases, the mechanism of pure diffusion becomes predominant. (C) 2012 Elsevier Ltd. All rights reserved.
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study of droplet vaporization of various vegetable Oils and blends of domestic fuel Oil Cottonseed Oil under different ambient temperature conditions
Biomass & Bioenergy, 2012Co-Authors: Tizane Daho, O Sanogo, G. Vaitilingom, B.g. Segda, Pascal Higelin, Jérémy Valette, Salifou K. Ouiminga, Jean KoulidiatiAbstract:In this work, the evaporation characteristics of different pure vegetable Oils (Cottonseed Oil, jatropha Oil, and rapeseed Oil), domestic fuel Oil (DFO) and blends of domestic fuel Oil and Cottonseed Oil have been studied using the fibre-suspended droplet evaporation technique. The constants of evaporation of pure products were determined as well as the influence of the proportion of DFO fraction on the mechanisms of vaporization process of Cottonseed Oil in the temperature range of 578 K-917 K under atmospheric pressure. The results show that the DFO evaporates completely in the range of temperatures considered in contrast to vegetable Oils that vaporize completely only for temperatures higher than or equal to 773 K. Above 873 K, the behaviour of vegetable Oils becomes similar to a single component product and the d(2) law is respected. At a given temperatures range, constants of evaporation of the three vegetable Oils are of the same order of magnitude. The results also show that blends of Cottonseed Oil and DFO vaporize following a sequential distillation mechanism: DFO is evaporating first, followed by a transient phase, and then Cottonseed Oil vaporizes following the same trends than observed for pure vegetable Oils. For low percentages of Cottonseed Oil (<= 40%) in the mixture, formation of bubbles can be observed at the end of the process at 684 K. When the concentration of vegetable Oil in the droplet increases, the mechanism of pure diffusion becomes predominant. (C) 2012 Elsevier Ltd. All rights reserved.
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Optimization of the combustion of blends of domestic fuel Oil and Cottonseed Oil in a non-modified domestic bOiler
Fuel, 2009Co-Authors: Tizane Daho, G. Vaitilingom, O SanogoAbstract:This study characterizes combustion of blends of DFO (domestic fuel–Oil) and refined Cottonseed Oil produced in Burkina Faso at different percentages in a non-modified DFO burner by determining its overall performance (consumption and thermal capacity) and gas emissions (CO, CO2, O2, NO, NOx, SO2). The physical and chemical characteristics of the different blends confer on each blend the status of a special fuel requiring specific adjustment of the burner. The influence of combustion parameters such as equivalence ratio and fuel pressure is studied. Results show that emissions of CO, NOx and CO2 are similar for all fuel blends at the operating point corresponding to 0.86 equivalence ratio and 20bars fuel pressure. Whatever the fuel pressure is, SO2 emission is increasing with DFO percentage in blends. Experimental emission results obtained with suitable adjustments for a blend containing 30% Cottonseed Oil and 70% DFO are compared to the calculated results obtained using a combustion equation based on a global chemical mechanism. The results show that there is a satisfactory match between the calculation and experimental results.
