The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Esmail Khalife - One of the best experts on this subject based on the ideXlab platform.
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a novel emulsion Fuel containing aqueous nano cerium oxide additive in diesel biodiesel Blends to improve diesel engines performance and reduce exhaust emissions part i experimental analysis
Fuel, 2017Co-Authors: Esmail Khalife, Meisam Tabatabaei, Bahman Najafi, Seyed Mostafa Mirsalim, Ayat Gharehghani, Pouya Mohammadi, Mortaza Aghbashlo, Akram Ghaffari, Zahra KhounaniAbstract:Abstract This survey was aimed at determining exergy-based sustainability parameters of a single cylinder DI diesel engine in response to various Fuel Blends and engine loads at a fixed engine speed of 1000 rpm. Engine tests were conducted at four engine loads (25%–100%) using a 95% diesel + 5%biodiesel Blend (B5) emulsified with water (3, 5, and 7 w/w%). All the prepared emulsions were stabilized with a 2:1 combination of Span 80 and Tween 80 (overall 7.5 w/w% surfactant). Two levels of cerium oxide nanoparticle concentrations (0 and 90 ppm) were also applied. The results showed that engine load and Fuel type profoundly affected the exergy-based sustainability indices of the engine. Generally, increasing engine load steadily decreased exergy efficiency, while normalized exergy destruction declined by up to 75% under full load condition. Among the Fuel Blends prepared, the B5 Blend containing 3 w/w% water and 90 ppm cerium oxide nanoparticles (B5W3m) showed the best exergy-based sustainability parameters at all the studied engine loads as its respective performance approached that of the basal petro-diesel. More specifically, among the Fuel Blends prepared the highest exergetic efficiency and the lowest normalized exergy destruction at full load condition were achieved using the selected Fuel Blend at 28.26% and 1.52, respectively. These values stood at 28.36% and 1.69 for neat diesel, respectively. However, the selected emulsified Fuel Blend represented a remarkably better environmental performance compared with diesel Fuel. In conclusion, the B5W3m Fuel Blend might be effectively applied as substitute to mineral diesel Fuel without any change in the existing engine structure.
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a novel emulsion Fuel containing aqueous nano cerium oxide additive in diesel biodiesel Blends to improve diesel engines performance and reduce exhaust emissions part i experimental analysis
Fuel, 2017Co-Authors: Esmail Khalife, Meisam Tabatabaei, Bahman Najafi, Seyed Mostafa Mirsalim, Ayat Gharehghani, Pouya Mohammadi, Mortaza Aghbashlo, Akram Ghaffari, Zahra KhounaniAbstract:Abstract Improving Fuel combustion in engines and consequently reducing environmentally-unfavorable emissions is of prominent importance in addressing some of the main challenges of the current century, i.e., global warming and climate change. Fuel additives are considered as efficient way for improving Fuel properties and to diminish engine emissions. In line with this, the present research was focused on the simultaneous application of water (3, 5, and 7 wt.%) and cerium oxide nano particles (90 ppm) as metal-based additive into biodiesel/diesel Fuel Blend (B5) and their impacts on the performance and emission characteristics of a single cylinder four stroke diesel engine were investigated. The findings revealed that the aqueous nano-emulsion of cerium oxide improved the overall combustion quality. More specifically, the brake specific Fuel consumption (bsfc) of B5 containing 3% water and 90 ppm cerium oxide (B5W3 m ) was measured 5% and 16% lower than those of neat B5 and neat B5 containing 3% water (B5W3), respectively. Moreover, the B5W3 m Fuel Blend increased brake thermal efficiency (bte) by over 23 and 11% compared with B5W3 and B5, respectively. B5W3 m also considerably reduced CO, HC, and NO x emissions by 51, 45, and 27% compared with B5W3. To the best of our knowledge, this is the first report exploring the impacts of low-level water containing cerium oxide in B5 on engine performance and emission characteristics.
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experimental investigation of low level water in waste oil produced biodiesel diesel Fuel Blend
Energy, 2017Co-Authors: Esmail Khalife, Bahman Najafi, Pouya Mohammadi, Hanif Kazerooni, Mostafa Mirsalim, Taha Roodbar Shojaei, Amran Mohd Salleh, Meisam TabatabaeiAbstract:Diminishing Fuel resources and stringent emission mandates have demanded cleaner combustion and increased Fuel efficiency. Three water addition rates, i.e., 2, 4, and 6 wt% in biodiesel-diesel Blend (B5) was investigated herein. Combustion characteristics of the emulsified Fuel Blends were compared in a naturally-aspirated diesel engine at full load and different engine speeds. More specifically, biodiesel was produced from waste cooking oil (WCO) and to further increase waste utilization, recycled biodiesel wastewater was used as additive in B5. The result obtained showed that low-level water addition (i.e., 2 and 4 wt%) in B5 led to different results from those obtained using higher water addition rates (i.e., >5 wt%) reported by the previous studies. In more details, the findings of the present study revealed that low level water addition in B5 could considerably reduce CO, HC, CO2, and NOx emissions. Among water-containing B5 Fuel emulsions, the optimal water addition level in terms of engine performance parameters and emissions was found at 4 wt%. In particular, the emitted CO2, HC, and NOx were decreased by over 8.5%, 28%, and 24%, respectively, at maximum speed of 2500 rpm.
Mustafa Canakci - One of the best experts on this subject based on the ideXlab platform.
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performance and emission characteristics of solketal gasoline Fuel Blend in a vehicle with spark ignition engine
Applied Thermal Engineering, 2017Co-Authors: Ertan Alptekin, Mustafa CanakciAbstract:Abstract Glycerol is a major byproduct of biodiesel production and it is used in many areas of application such as solketal production. Solketal is an alternative Fuel for gasoline engines. Solketal addition into gasoline provides better Fuel characteristics and especially an increase in octane number. In this study, detailed Fuel properties of solketal-gasoline Fuels were characterized according to Fuel standards specified in EN 228. Pure gasoline and the Blend containing 9% solketal were used as test Fuels. Engine performance and emission characteristics of a vehicle with spark ignition engine were determined by using a chassis dynamometer. According to the test results, octane number and density of the Blend increased while gum formation decreased when using solketal as an additive with gasoline Fuel. Brake specific Fuel consumptions of the solketal Blend were higher than those of pure gasoline for all test conditions. Emission results showed that CO and HC emissions decreased while CO 2 and NO x emissions increased generally compared to pure gasoline when the engine was Fueled with the solketal Blend.
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determination of the density and the viscosities of biodiesel diesel Fuel Blends
Renewable Energy, 2008Co-Authors: Ertan Alptekin, Mustafa CanakciAbstract:In this study, commercially available two different diesel Fuels were Blended with the biodiesels produced from six different vegetable oils (sunflower, canola, soybean, cottonseed, corn oils and waste palm oil). The Blends (B2, B5, B10, B20, B50 and B75) were prepared on a volume basis. The key Fuel properties such as density and viscosities of the Blends were measured by following ASTM test methods. Generalized equations for predicting the density and viscosities for the Blends were given and a mixing equation, originally proposed by Arrhenius and described by Grunberg and Nissan, was used to predict the viscosities of the Blends. For all Blends, it was found that there is an excellent agreement between the measured and estimated values of the density and viscosities. According to the results, the density and viscosities of the Blends increased with the increase of biodiesel concentration in the Fuel Blend.
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effects of biodiesel from used frying palm oil on the exhaust emissions of an indirect injection idi diesel engine
Energy & Fuels, 2008Co-Authors: Ahmet Necati Ozsezen, Mustafa Canakci, Cenk SayinAbstract:In our previous paper, the influences of biodiesel and its Blends on the performance, combustion, and injection characteristics of an indirect injection (IDI) diesel engine have been discussed. The results have indicated that, when the test engine was Fueled with biodiesel and its Blends, the maximum brake torque, brake thermal efficiency, and brake power dropped, while the brake-specific Fuel consumption increased compared to the petroleum-based diesel Fuel (PBDF). The main differences in the combustion and injection characteristics of biodiesel and its Blends are earlier premixed combustion, shorter ignition delay, higher cylinder gas pressure, and earlier start of injection in terms of the PBDF. This paper discusses the exhaust emission results obtained in the same study. The emission results showed that carbon monoxide (CO), unburned hydrocarbon (HC) emissions, and smoke opacity decreased with the increase of biodiesel percentage in the Fuel Blend for all engine speeds under the full-load condition. H...
Zahra Khounani - One of the best experts on this subject based on the ideXlab platform.
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a novel emulsion Fuel containing aqueous nano cerium oxide additive in diesel biodiesel Blends to improve diesel engines performance and reduce exhaust emissions part i experimental analysis
Fuel, 2017Co-Authors: Esmail Khalife, Meisam Tabatabaei, Bahman Najafi, Seyed Mostafa Mirsalim, Ayat Gharehghani, Pouya Mohammadi, Mortaza Aghbashlo, Akram Ghaffari, Zahra KhounaniAbstract:Abstract This survey was aimed at determining exergy-based sustainability parameters of a single cylinder DI diesel engine in response to various Fuel Blends and engine loads at a fixed engine speed of 1000 rpm. Engine tests were conducted at four engine loads (25%–100%) using a 95% diesel + 5%biodiesel Blend (B5) emulsified with water (3, 5, and 7 w/w%). All the prepared emulsions were stabilized with a 2:1 combination of Span 80 and Tween 80 (overall 7.5 w/w% surfactant). Two levels of cerium oxide nanoparticle concentrations (0 and 90 ppm) were also applied. The results showed that engine load and Fuel type profoundly affected the exergy-based sustainability indices of the engine. Generally, increasing engine load steadily decreased exergy efficiency, while normalized exergy destruction declined by up to 75% under full load condition. Among the Fuel Blends prepared, the B5 Blend containing 3 w/w% water and 90 ppm cerium oxide nanoparticles (B5W3m) showed the best exergy-based sustainability parameters at all the studied engine loads as its respective performance approached that of the basal petro-diesel. More specifically, among the Fuel Blends prepared the highest exergetic efficiency and the lowest normalized exergy destruction at full load condition were achieved using the selected Fuel Blend at 28.26% and 1.52, respectively. These values stood at 28.36% and 1.69 for neat diesel, respectively. However, the selected emulsified Fuel Blend represented a remarkably better environmental performance compared with diesel Fuel. In conclusion, the B5W3m Fuel Blend might be effectively applied as substitute to mineral diesel Fuel without any change in the existing engine structure.
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a novel emulsion Fuel containing aqueous nano cerium oxide additive in diesel biodiesel Blends to improve diesel engines performance and reduce exhaust emissions part i experimental analysis
Fuel, 2017Co-Authors: Esmail Khalife, Meisam Tabatabaei, Bahman Najafi, Seyed Mostafa Mirsalim, Ayat Gharehghani, Pouya Mohammadi, Mortaza Aghbashlo, Akram Ghaffari, Zahra KhounaniAbstract:Abstract Improving Fuel combustion in engines and consequently reducing environmentally-unfavorable emissions is of prominent importance in addressing some of the main challenges of the current century, i.e., global warming and climate change. Fuel additives are considered as efficient way for improving Fuel properties and to diminish engine emissions. In line with this, the present research was focused on the simultaneous application of water (3, 5, and 7 wt.%) and cerium oxide nano particles (90 ppm) as metal-based additive into biodiesel/diesel Fuel Blend (B5) and their impacts on the performance and emission characteristics of a single cylinder four stroke diesel engine were investigated. The findings revealed that the aqueous nano-emulsion of cerium oxide improved the overall combustion quality. More specifically, the brake specific Fuel consumption (bsfc) of B5 containing 3% water and 90 ppm cerium oxide (B5W3 m ) was measured 5% and 16% lower than those of neat B5 and neat B5 containing 3% water (B5W3), respectively. Moreover, the B5W3 m Fuel Blend increased brake thermal efficiency (bte) by over 23 and 11% compared with B5W3 and B5, respectively. B5W3 m also considerably reduced CO, HC, and NO x emissions by 51, 45, and 27% compared with B5W3. To the best of our knowledge, this is the first report exploring the impacts of low-level water containing cerium oxide in B5 on engine performance and emission characteristics.
Meisam Tabatabaei - One of the best experts on this subject based on the ideXlab platform.
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a novel emulsion Fuel containing aqueous nano cerium oxide additive in diesel biodiesel Blends to improve diesel engines performance and reduce exhaust emissions part i experimental analysis
Fuel, 2017Co-Authors: Esmail Khalife, Meisam Tabatabaei, Bahman Najafi, Seyed Mostafa Mirsalim, Ayat Gharehghani, Pouya Mohammadi, Mortaza Aghbashlo, Akram Ghaffari, Zahra KhounaniAbstract:Abstract This survey was aimed at determining exergy-based sustainability parameters of a single cylinder DI diesel engine in response to various Fuel Blends and engine loads at a fixed engine speed of 1000 rpm. Engine tests were conducted at four engine loads (25%–100%) using a 95% diesel + 5%biodiesel Blend (B5) emulsified with water (3, 5, and 7 w/w%). All the prepared emulsions were stabilized with a 2:1 combination of Span 80 and Tween 80 (overall 7.5 w/w% surfactant). Two levels of cerium oxide nanoparticle concentrations (0 and 90 ppm) were also applied. The results showed that engine load and Fuel type profoundly affected the exergy-based sustainability indices of the engine. Generally, increasing engine load steadily decreased exergy efficiency, while normalized exergy destruction declined by up to 75% under full load condition. Among the Fuel Blends prepared, the B5 Blend containing 3 w/w% water and 90 ppm cerium oxide nanoparticles (B5W3m) showed the best exergy-based sustainability parameters at all the studied engine loads as its respective performance approached that of the basal petro-diesel. More specifically, among the Fuel Blends prepared the highest exergetic efficiency and the lowest normalized exergy destruction at full load condition were achieved using the selected Fuel Blend at 28.26% and 1.52, respectively. These values stood at 28.36% and 1.69 for neat diesel, respectively. However, the selected emulsified Fuel Blend represented a remarkably better environmental performance compared with diesel Fuel. In conclusion, the B5W3m Fuel Blend might be effectively applied as substitute to mineral diesel Fuel without any change in the existing engine structure.
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a novel emulsion Fuel containing aqueous nano cerium oxide additive in diesel biodiesel Blends to improve diesel engines performance and reduce exhaust emissions part i experimental analysis
Fuel, 2017Co-Authors: Esmail Khalife, Meisam Tabatabaei, Bahman Najafi, Seyed Mostafa Mirsalim, Ayat Gharehghani, Pouya Mohammadi, Mortaza Aghbashlo, Akram Ghaffari, Zahra KhounaniAbstract:Abstract Improving Fuel combustion in engines and consequently reducing environmentally-unfavorable emissions is of prominent importance in addressing some of the main challenges of the current century, i.e., global warming and climate change. Fuel additives are considered as efficient way for improving Fuel properties and to diminish engine emissions. In line with this, the present research was focused on the simultaneous application of water (3, 5, and 7 wt.%) and cerium oxide nano particles (90 ppm) as metal-based additive into biodiesel/diesel Fuel Blend (B5) and their impacts on the performance and emission characteristics of a single cylinder four stroke diesel engine were investigated. The findings revealed that the aqueous nano-emulsion of cerium oxide improved the overall combustion quality. More specifically, the brake specific Fuel consumption (bsfc) of B5 containing 3% water and 90 ppm cerium oxide (B5W3 m ) was measured 5% and 16% lower than those of neat B5 and neat B5 containing 3% water (B5W3), respectively. Moreover, the B5W3 m Fuel Blend increased brake thermal efficiency (bte) by over 23 and 11% compared with B5W3 and B5, respectively. B5W3 m also considerably reduced CO, HC, and NO x emissions by 51, 45, and 27% compared with B5W3. To the best of our knowledge, this is the first report exploring the impacts of low-level water containing cerium oxide in B5 on engine performance and emission characteristics.
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experimental investigation of low level water in waste oil produced biodiesel diesel Fuel Blend
Energy, 2017Co-Authors: Esmail Khalife, Bahman Najafi, Pouya Mohammadi, Hanif Kazerooni, Mostafa Mirsalim, Taha Roodbar Shojaei, Amran Mohd Salleh, Meisam TabatabaeiAbstract:Diminishing Fuel resources and stringent emission mandates have demanded cleaner combustion and increased Fuel efficiency. Three water addition rates, i.e., 2, 4, and 6 wt% in biodiesel-diesel Blend (B5) was investigated herein. Combustion characteristics of the emulsified Fuel Blends were compared in a naturally-aspirated diesel engine at full load and different engine speeds. More specifically, biodiesel was produced from waste cooking oil (WCO) and to further increase waste utilization, recycled biodiesel wastewater was used as additive in B5. The result obtained showed that low-level water addition (i.e., 2 and 4 wt%) in B5 led to different results from those obtained using higher water addition rates (i.e., >5 wt%) reported by the previous studies. In more details, the findings of the present study revealed that low level water addition in B5 could considerably reduce CO, HC, CO2, and NOx emissions. Among water-containing B5 Fuel emulsions, the optimal water addition level in terms of engine performance parameters and emissions was found at 4 wt%. In particular, the emitted CO2, HC, and NOx were decreased by over 8.5%, 28%, and 24%, respectively, at maximum speed of 2500 rpm.
Ahmed I Elseesy - One of the best experts on this subject based on the ideXlab platform.
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the effect of aluminum oxide nanoparticles addition with jojoba methyl ester diesel Fuel Blend on a diesel engine performance combustion and emission characteristics
Fuel, 2018Co-Authors: Ahmed I Elseesy, Ali M A Attia, Hesham M ElbatshAbstract:Abstract In the current work, an experimental investigation was conducted to recommend the optimal concentration of alumina nanoparticles (Al2O3) into Jojoba biodiesel-diesel (JB20D) Fuel Blend at which the best diesel engine performance and exhaust emissions were attained. The Al2O3 nanoparticles with concentrations varied from 10 to 50 mg/l by step of 10 mg/l were mixed into JB20D Fuel Blend with the help of ultrasonic stabilization. The results of the present study revealed that JB20D slightly reduced the engine performance and increased its emission characteristics at all engine tested operating conditions as compared to pure diesel oil. Utilizing of Al2O3 additives was found to improve all engine performance characteristics. However, the best emission characteristics were obtained at the dose level of 20 mg/l, where remarkable emissions reduction were observed; NOx by 70%, CO by 80%, UHC by 60%, and Smoke opacity by 35%. While the best of both mechanical performance and engine combustion characteristics were achieved at a concentration of 40 mg/l, where the reduction in the brake specific Fuel consumption – bsfc was by 12% and increase in the cylinder peak pressure – pmax, the maximum rate of pressure rise – dp/dθmax, and maximum rate of gross heat release – dQg/dθmax were 4.5%, 4%, and 4%, respectively. According to the comparisons of engine performance and emissions, the recommended concentration of Al2O3 in JB20D Blends was concluded to be 30 mg/l, which gave remarkable enhancement in all engine performance parameters.
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the influence of multi walled carbon nanotubes additives into non edible biodiesel diesel Fuel Blend on diesel engine performance and emissions
Energy Procedia, 2016Co-Authors: Ahmed I Elseesy, Ali K Abdelrahman, Mahmoud Bady, Shinichi OokawaraAbstract:Abstract This paper reports on an experimental investigation that was conducted to recommend the most suitable dose level of multi-walled carbon nanotubes (MWCNT) into biodiesel-diesel Fuel Blend at which the optimum diesel engine performance is attained. In this study, nano-particles of size from 10 to 15 nm with tube length 1-10 microns, the dose level is varied from 10 to 50 mg/l by step of 10 mg/l was mixed into the biodiesel-diesel Fuel Blend with the help of ultrasonicator. A single cylinder diesel engine test facility was used to study the effect of nanoparticles dose level on engine combustion and environmental performance parameters with a constant speed of 2000 RPM and different engine torque. The results of the present study showed that the biodiesel-diesel Fuel Blend slightly decreases the mechanical engine performance and increases its emission characteristics at all tested engine operating conditions. The use of MWCNTs is found to improve all engine performance parameters no matter the studied dose level. However, the best emission characteristics are obtained at a dose level of 30 mg/l (where remarkable emission reduction is observed; NO x by 45%, CO by 50%, and UHC by 60%). While the best of engine combustion characteristics are achieved at a dose level of 50 mg/l (the increase in the in-cylinder peak pressure - P max , is about 7%). Finally, it valuable to recommend the dose level of 40 mg/l where reasonable improvement in engine performance is achieved.
