Effects of nanoparticle additives to diesel on the combustion performance and emissions of a flame tube boiler

Sungur, Bilal; Topaloğlu, Bahattin; Özcan, Hakan

doi:10.1016/j.energy.2016.07.040

Cited by 42 publications

(10 citation statements)

References 21 publications

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“…The efficiency of a boiler can be calculated with Eq. (7) as follows (Sungur et al, 2016), if losses are neglected except sensible heat of flue gases:…”

Section: Resultsmentioning

confidence: 99%

Numerical Analyses of the Effects of Fuel Load Variation on Combustion Performance of a Pellet Fuelled Boiler

Sungur¹,

Topaloğlu²

2018

Bilge International Journal of Science and Technology Research

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Domestic and industrial energy requirements since the beginning of industrial revolution have been largely met by fossil fuels. This leads to a continuous increase in the Earth's atmosphere of carbon dioxide and other harmful components. Also, fossil energy resources decreasing day by day and scientists have turned to new research. In this context alternative energy sources have an important role to reduce dependence on fossil fuels. One of the alternative energy sources is biomass and pellet fuel is one of them. In this study, combustion characteristics of pellet fuel in a model smoke tube boiler at different loading conditions were investigated numerically. As a Computational Fluid Dynamic (CFD) program FLUENT package program was used. Calculations were performed at two dimensional conditions. According to various loading conditions, temperature and stream function contours, velocity vectors, exhaust gas temperatures and efficiencies were investigated and results were discussed. With decreasing thermal load, the exhaust gas temperatures decreased and boiler efficiencies increased. By reducing thermal power from the maximum value of 75 kW to the minimum value of 30 kW, the exhaust gas temperature decreased from 585 K to 429 K, whereas the thermal efficiency increased from 76% to 89%

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“…The efficiency of a boiler can be calculated with Eq. (7) as follows (Sungur et al, 2016), if losses are neglected except sensible heat of flue gases:…”

Section: Resultsmentioning

confidence: 99%

Numerical Analyses of the Effects of Fuel Load Variation on Combustion Performance of a Pellet Fuelled Boiler

Sungur¹,

Topaloğlu²

2018

Bilge International Journal of Science and Technology Research

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“…The emission of nitrogen oxides depends significantly on the type of fuel used and the operating conditions of the vehicle's engine. The dependence of the emission of nitrogen oxides on the operating conditions is in turn influenced by the proportion of oxygen in the mixture and the temperature of the combustion process [34,36,38]. The NO x thermal emission increased with the oxygenated additive in mixtures with oxygenated additive proportion greater than 5%, as in the case of B90A10 and B95A5 blends (Figure 4).…”

Section: Fuel Blends Effects On No X Emissionmentioning

confidence: 99%

Experimental Investigation on Emissions Characteristics from Urban Bus Fueled with Diesel, Biodiesel and an Oxygenated Additive from Residual Glycerin from Biodiesel Production

et al. 2021

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The aim of the study was to assess the influence of the addition of an oxygenated additive (a mixture of mono-, di- and triacetylglycerol obtained from residual glycerin within the biodiesel production scheme) on the specific fuel consumption and exhaust emissions of a EURO 3 diesel bus during its daily route through the city. To do this, the urban bus was fuelled with five fuel blends of diesel (D), biodiesel (B), additive (A) and heptanol as co-surfactant (H). A portable emissions measurement system was used to measure the exhaust gases while an engine exhaust particle system with a dilution system, both installed on the urban bus, was used for nanoparticles measurement in actual operating conditions through the city of Seville. Results showed that B95A5 (95%v/v biodiesel, 5%v/v additive) and B90A10 were the blends that most increased NOx emissions (by 24.12% and 9.85%, respectively) compared to D100. On the other hand, B47.5D47.5A2.5H2.5 was the blend that most reduced total particle number (by 31.6%) and NOx emissions (by 12%). All in all, the oxygenated additive can be efficiently blended with biodiesel to reduce particle emissions from engines without diesel particle filter, such as those in urban buses in many European cities.

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“…Dizel yakıtına katılan Al 2 O 3 [22,23] ile Fe 2 O 3 ve Fe 3 O 4 [27,29] oranı arttıkça yoğunluk, viskozite, alevlenme ve tutuşma sıcaklığı ile ısıl değerin arttığı çeşitli araştırmacılar tarafından belirlenmiştir. Ancak, Fe 2 O 3 katkısının alevlenme ve tutuşma sıcaklığını düşürdüğü [27] ve Al 2 O 3 katkısının yakıt özellikleri üzerinde önemli bir etkiye sahip olmadığını gösteren [30,32] hatta alevlenme sıcaklığı ve setan sayısının Al 2 O 3 katkısıyla azaldığını [33] bildiren çalışma sonuçları da vardır. Grafit oksit (GO) katkısının yoğunluğu bir miktar artırmasına rağmen viskozite, alevlenme sıcaklığı ve setan sayısı değerlerini düşürdüğü belirlenmiştir [33].…”

Section: Nano Materyallerin Dizel Yakıtı Ve Emülsiyonlarının öZelliklerine Etkileriunclassified

Nano materyal içerikli katkıların yakıt özelliklerine ve motor performansına etkileri

Sezer¹

2018

Balıkesir Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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ÖzetBu çalışma; dizel, biyodizel, su içeren emülsiyon yakıtları ve çeşitli yakıt karışımları gibi dizel motor yakıtlarında nano materyal içerikli katkıların kullanılmasının motor performansı ve emisyonlara etkileri üzerine yapılmış çeşitli çalışmaların sonuçlarından derlenmiştir. Dizel motorlarda zararlı egzoz emisyonlarını azaltması için üç farklı teknik uygulanmaktadır. Zararlı emisyonları azaltmak için uygulanan tekniklerden ilki motor tasarımda ve yakıt püskürtme sisteminde değişiklikler yapılarak yanmanın iyileştirilmesidir. Ancak bu pahalı ve zaman alıcı bir süreçtir. İkinci teknik katalitik konvertör ve partikül filtresi gibi çeşitli egzoz gazı azaltıcı sistemler kullanmaktır. Ancak, bu sistemler dizel motorun performansını olumsuz yönde etkiler. Dizel motorlarda, emisyonları azaltmak ve aynı zamanda dizel motorun performansını artırmak için kullanılan üçüncü teknik ise çeşitli yakıt katkılarının kullanılmasıdır. Dizel motorlardan yayılan en önemli kirleticiler azot oksit (NOx) ve partikül madde (PM−is) emisyonlarıdır. Uygulamada, NOx ve PM emisyonlarını birlikte azaltmak oldukça zordur. Emisyonları azaltmanın ve motor performansını artırmanın en iyi yolunun nano materyal içerikli katkıların ve suyla emülsiyonlaştırılmış yakıtların kullanımı olduğu birçok araştırmacı tarafından bildirilmektedir. Bu derlemede çeşitli dizel motor yakıtlarında farklı nano materyal içerikli katkıların kullanımının yakıt özellikleri ve motor performansına etkileri incelenmiştir. Anahtar kelimeler: Dizel motor performansı, biyodizel, emülsiyon yakıt, nano materyal katkılar. * İsmet SEZER, isezer@gumushane.edu.tr, https://orcid.org/0000-0001-7342-9172 569 SEZER İ. AbstractThis study compiled the results of various researches performed on the effects of performance and emissions of diesel engine using nanomaterials additives in diesel engine fuels such as diesel, biodiesel, water emulsified fuels and various fuel blends. Three different techniques are used in reduction of the harmful exhaust emissions of the diesel engine. The first technique for the reduction of harmful emissions is improving the combustion by modification of engine design and fuel injection system, but this process is expensive and time consuming. The second technique is the using various exhaust gas devices like catalytic converter and diesel particulate filter. However, the use of these devices affects negatively diesel engine performance. The other technique to reduce emissions and also improve diesel engine performance is the use of various fuel additives. The major pollutants of diesel engine are oxide of nitrogen (NOx) and particulate matter (PM). It is very difficult to reduce NOx and PM simultaneously in practice. The most researches declare that the best way to reduce the emissions and increase the engine performance is the use of nano material additives and water emulsified fuels. The effects of using different nano material additives in various diesel engine fuels on the fuel properties and engine performance were investigated in this review.

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Effects of nanoparticle additives to diesel on the combustion performance and emissions of a flame tube boiler

Cited by 42 publications

References 21 publications

Numerical Analyses of the Effects of Fuel Load Variation on Combustion Performance of a Pellet Fuelled Boiler

Numerical Analyses of the Effects of Fuel Load Variation on Combustion Performance of a Pellet Fuelled Boiler

Experimental Investigation on Emissions Characteristics from Urban Bus Fueled with Diesel, Biodiesel and an Oxygenated Additive from Residual Glycerin from Biodiesel Production

Nano materyal içerikli katkıların yakıt özelliklerine ve motor performansına etkileri

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