Journal articles: 'Alternative combustion'

1

Weißbäck, Michael, János Csató, Michael Glensvig, Theodor Sams, and Peter Herzog. "Alternative combustion." MTZ worldwide 64, no. 9 (September 2003): 17–20. http://dx.doi.org/10.1007/bf03227611.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Du, Zhibin, Chao Chen, and Lei Wang. "Combustion characteristics of and bench test on “gasoline + alternative fuel”." Thermal Science, no. 00 (2020): 324. http://dx.doi.org/10.2298/tsci200704324d.

Full text

Abstract:

In this study, an evaporative premixed constant-volume combustion system was designed for combustion of liquid fuels, compared with a traditional constant-volume firebomb. The effects of an alternative fuel of gasoline on the combustion characteristics of the laminar flame of gasoline were analyzed, and then a bench test was carried out. The results show that the addition of an alternative fuel of gasoline makes the maximum non-stretched flame propagation velocity of combusting gasoline increasingly close to that of combusting diluted mixed gas. The Markstein lengths of gasoline and ?gasoline + alternative fuel? become shorter with a higher equivalence ratio, and flame combustion becomes increasingly unstable. The laminar combustion velocity of ?gasoline + alternative fuel? rises first and then declines as the equivalence ratio increases. According to the results of the bench test, adding 20% of the alternative fuel into gasoline will exert little impact on the power performance and fuel consumption of the engine, but it will reduce HC emission by 25% and CO emission by 67%.

APA, Harvard, Vancouver, ISO, and other styles

3

Ghenai, Chaouki, Khaled Zbeeb, and Isam Janajreh. "Combustion of alternative fuels in vortex trapped combustor." Energy Conversion and Management 65 (January 2013): 819–28. http://dx.doi.org/10.1016/j.enconman.2012.03.012.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Jankowski, Antoni, and Mirosław Kowalski. "Alternative fuel in the combustion process of combustion engines." Journal of KONBiN 48, no. 1 (December 1, 2018): 55–81. http://dx.doi.org/10.2478/jok-2018-0047.

Full text

Abstract:

Abstract The article analyses the impact of emulsified fuel, containing H2O2 hydrogen peroxide, on the emissions of nitrogen oxides and diesel engine smoke. The process of forming toxic components in exhaust gases of reciprocating engines during the engine operation, and the relationship that specifies the hydrogen peroxide decomposition process were presented. The research was carried out with the use of fuel containing 30%, 20% and 10% of hydrogen peroxide. The concentration courses of the nitric oxide (NO) and nitrogen oxides (NOx), as well as the (CO) carbon monoxide concentration and (S) engine smoke courses were shown separately for the external characteristics of the engine. Finally, the importance of knowledge related to the mechanisms of generation of toxic components in exhaust gases in the reciprocating engines was emphasised.

APA, Harvard, Vancouver, ISO, and other styles

5

Dellenback, Paul A. "A Reassessment of the Alternative Regeneration Cycle." Journal of Engineering for Gas Turbines and Power 128, no. 4 (August 19, 2005): 783–88. http://dx.doi.org/10.1115/1.2179079.

Full text

Abstract:

Two prior papers and several patents have considered improvements to a gas turbine engine’s cycle efficiency by using two turbines in series with an intermediate heat exchanger that preheats combustion air. This approach allows heating the combustion air to temperatures higher than those that can be achieved with “conventional regeneration” in which the combustion products are fully expanded across a turbine before any heat recovery. Since heat addition in the combustor of the “alternative regeneration” cycle occurs at a higher average temperature, then under certain conditions the cycle efficiency can be higher than that available from a cycle using conventional regeneration. This paper reconsiders the usefulness of the alternative regeneration cycle with more detailed modeling than has been presented previously. The revised modeling shows that the alternative regeneration cycle can produce efficiencies higher than conventional regeneration, but only for a more limited set of conditions than previously reported. For high-technology engines operating at high temperatures, the alternative regeneration cycle efficiencies can be three to four percentage points better than comparable conventional regeneration cycles. For lower-technology engines, which are more typical of those currently installed, improvements in efficiency only occur at lower values of heat exchanger effectiveness, which limits the usefulness of the alternative regeneration cycle. Also considered is an extension to the cycle that employs a second heat exchanger downstream of the second turbine for the purpose of further preheating the combustion air. In its optimum configuration, this “staged heat recovery” can produce additional small improvements of between 0.3 and 2.3 percentage points in cycle efficiency, depending on the particular cycle parameters assumed.

APA, Harvard, Vancouver, ISO, and other styles

6

Martins, Jorge, and F. P. Brito. "Alternative Fuels for Internal Combustion Engines." Energies 13, no. 16 (August 6, 2020): 4086. http://dx.doi.org/10.3390/en13164086.

Full text

Abstract:

The recent transport electrification trend is pushing governments to limit the future use of Internal Combustion Engines (ICEs). However, the rationale for this strong limitation is frequently not sufficiently addressed or justified. The problem does not seem to lie within the engines nor with the combustion by themselves but seemingly, rather with the rise in greenhouse gases (GHG), namely CO2, rejected to the atmosphere. However, it is frequent that the distinction between fossil CO2 and renewable CO2 production is not made, or even between CO2 emissions and pollutant emissions. The present revision paper discusses and introduces different alternative fuels that can be burned in IC Engines and would eliminate, or substantially reduce the emission of fossil CO2 into the atmosphere. These may be non-carbon fuels such as hydrogen or ammonia, or biofuels such as alcohols, ethers or esters, including synthetic fuels. There are also other types of fuels that may be used, such as those based on turpentine or even glycerin which could maintain ICEs as a valuable option for transportation.

APA, Harvard, Vancouver, ISO, and other styles

7

Park, Okjoo, Peter S. Veloo, Ning Liu, and Fokion N. Egolfopoulos. "Combustion characteristics of alternative gaseous fuels." Proceedings of the Combustion Institute 33, no. 1 (2011): 887–94. http://dx.doi.org/10.1016/j.proci.2010.06.116.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Bürgler, Ludwig, Michael Glensvig, Klemens Neunteufl, and Michael Weißbäck. "Vehicle application with alternative diesel combustion." MTZ worldwide 66, no. 11 (November 2005): 12–15. http://dx.doi.org/10.1007/bf03227796.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Lyon, Richard K., and Jerald A. Cole. "Unmixed combustion: an alternative to fire." Combustion and Flame 121, no. 1-2 (April 2000): 249–61. http://dx.doi.org/10.1016/s0010-2180(99)00136-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Bae, Choongsik, and Jaeheun Kim. "Alternative fuels for internal combustion engines." Proceedings of the Combustion Institute 36, no. 3 (2017): 3389–413. http://dx.doi.org/10.1016/j.proci.2016.09.009.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Bee´r, J. M., and R. V. Garland. "A Coal-Fueled Combustion Turbine Cogeneration System With Topping Combustion." Journal of Engineering for Gas Turbines and Power 119, no. 1 (January 1, 1997): 84–92. http://dx.doi.org/10.1115/1.2815567.

Full text

Abstract:

Cogeneration systems fired with coal or other solid fuels and containing conventional extracting-condensing or back pressure steam turbines can be found throughout the world. A potentially more economical plant of higher output per unit thermal energy is presented that employs a pressurized fluidized bed (PFB) and coal carbonizer. The carbonizer produces a char that is fed to the PFB and a low heating value fuel gas that is utilized in a topping combustion system. The topping combustor provides the means for achieving state-of-the-art turbine inlet temperatures and is the main contributor to enhancing the plant performance. An alternative to this fully coal-fired system is the partially coal, partially natural gas-fired air heater topping combustion cycle. In this cycle compressed air is preheated in an atmospheric pressure coal-fired boiler and its temperature raised further by burning natural gas in a topping gas turbine combustor. The coal fired boiler also generates steam for use in a cogeneration combined cycle. The conceptual design of the combustion turbine is presented with special emphasis on the low-emissions multiannular swirl burner topping combustion system and its special requirements and features.

APA, Harvard, Vancouver, ISO, and other styles

12

Amann, C. A. "Evaluating Alternative Internal Combustion Engines: 1950–1975." Journal of Engineering for Gas Turbines and Power 121, no. 3 (July 1, 1999): 540–45. http://dx.doi.org/10.1115/1.2818506.

Full text

Abstract:

GMR (General Motors Research Laboratories, now GM R&D Center) has long sought ways to improve automotive combustion engines. Following World War II, considerable effort was also devoted to evaluating new powerplants that embodied different operating cycles from those of the established spark-ignition and diesel engines. Two internal combustion variants receiving attention during the third quarter of the 20th century were the free-piston diesel and the gas turbine. Research on those two alternatives is reviewed. Because their shortcomings were judged to outweigh their advantages, neither has found commercial application in highway vehicles.

APA, Harvard, Vancouver, ISO, and other styles

13

Holubčík, Michal, Nikola Kantová, Jozef Jandačka, and Zuzana Kolková. "Alternative solid fuels combustion in small heat source." MATEC Web of Conferences 168 (2018): 08002. http://dx.doi.org/10.1051/matecconf/201816808002.

Full text

Abstract:

Air quality is related to the using of solid fuel based heat sources in which the human factor has a major influence on the quality of combustion, which can lead to higher emissions into the air. One of the negative factors is the use of alternative fuels in heat sources. The article deals with the combustion of various alternative fuels, on a waste basis, in small heat sources. There were tested 4 types of fuels: beech wood pieces, 2 types of solid alternative fuel on the base of municipal waste and wood waste. In the experiment, it was tested the influence of used fuel in the fireplace on the heat output, efficiency, production of gaseous emissions and particulate matter. The results confirmed that combustion of fuels not recommended by the heat source manufacturer reduces the efficiency of combustion and significantly increases all monitored emissions.

APA, Harvard, Vancouver, ISO, and other styles

14

Zhang, Jixiang. "Recent Studies on Alternative Fuel of Dimethyl Ether." Trends in Renewable Energy 9, no. 1 (January 2023): 1–10. http://dx.doi.org/10.17737/tre.2023.9.1.00148.

Full text

Abstract:

With the development of industrialization, a large number of non-renewable fuels (such as coal and crude oil) are consumed, and the harmful substances produced in the combustion process of a large number of fossil fuels have caused serious pollution to the atmosphere, and the harmful gases produced by combustion have caused disastrous damage to the ecological balance. Therefore, finding clean energy and exploring alternative fuels are very important in today's society. This paper mainly reviews the studies on the alternative fuels of dimethyl ether (DME). Firstly, the types of alternative fuels currently researched by society and their respective advantages and disadvantages are analyzed, and the preparation of dimethyl ether and its advantages and disadvantages are analyzed in detail. In addition, the physicochemical properties, combustion and emission characteristics of dimethyl ether and diesel are compared and analyzed. The conclusion is that the injection delay angle of dimethyl ether is larger than that of diesel, the ignition delay period is shorter than that of diesel, and the maximum explosion pressure, maximum pressure rise rate and combustion noise of dimethyl ether are lower than that of diesel. The diffusion combustion speed of DME is faster than that of diesel, and the combustion duration is shorter than that of diesel. At the same time, as an alternative energy, dimethyl ether engine has a significant reduction in NOx emission, a very low level of HC and CO emission, and zero soot emission. In conclusion, the DME engine has good performance and emission characteristics.

APA, Harvard, Vancouver, ISO, and other styles

15

Gupta1, Neha, and Sunil Kumar Mahla. "Biogas-an Alternative Fuel for Distributed Generation." International Journal of Advance Research and Innovation 5, no. 4 (2017): 69–74. http://dx.doi.org/10.51976/ijari.541711.

Full text

Abstract:

The electric energy sector is facing problems of fuel scarcity such as coal shortage, average losses of power transmission, distribution rise, insufficient or poor infrastructure and connectivity in distribution lines etc. Renewable energy sources are considered as clean sources of energy and when use optimally, these resources minimize environmental hazards, produce minimum secondary wastes and are sustainable based on future energy demands. Since Internal combustion engines are developed more than a century ago, IC engines are the most common of all distributed generation technologies. In this paper a review has been done on use of biogas as an alternative sustainable fuel to be used in internal combustion engine for distributed generation. The main objective of this paper is to investigate bio-gas generation, its properties, desired characteristics and factors affecting the biogas generation from organic wastes by the anaerobic digestion. The biogas primarily comprises of methane, which is used for combustion. Use of methane reduces harmful engine emissions, and keeps the environment clean. It is economical and slurry can be used as organic manure. The main aspect of stationary internal combustion engines for electrical generators use is for isolated farms and rural areas.

APA, Harvard, Vancouver, ISO, and other styles

16

Hiromi Ariyaratne, W. K., E. V. P. J. Manjula, Morten C. Melaaen, and Lars-André Tokheim. "Mathematical Model for Alternative Fuel Combustion in a Rotary Cement Kiln Burner." International Journal of Modeling and Optimization 4, no. 1 (2014): 56–61. http://dx.doi.org/10.7763/ijmo.2014.v4.347.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Srinivasnaik, M., Dr T. V. V. Sudhakar, and Dr B. Balu Naik. "Bio Diesel as an Alternative Green Fuel to Internal Combustion Diesel Engine." Bonfring International Journal of Industrial Engineering and Management Science 5, no. 2 (June 30, 2015): 63–66. http://dx.doi.org/10.9756/bijiems.8062.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Scala, Fabrizio, and Riccardo Chirone. "Fluidized bed combustion of alternative solid fuels." Experimental Thermal and Fluid Science 28, no. 7 (September 2004): 691–99. http://dx.doi.org/10.1016/j.expthermflusci.2003.12.005.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Zheng, Lukai, James Cronly, Emamode Ubogu, Ihab Ahmed, Yang Zhang, and Bhupendra Khandelwal. "Experimental investigation on alternative fuel combustion performance using a gas turbine combustor." Applied Energy 238 (March 2019): 1530–42. http://dx.doi.org/10.1016/j.apenergy.2019.01.175.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Chun, Young Nam, and June An. "Development of Cavity Matrix Combustor for Biogas Application." ASEAN Journal of Chemical Engineering 22, no. 2 (December 29, 2022): 306. http://dx.doi.org/10.22146/ajche.76154.

Full text

Abstract:

The use of conventional fossil fuels has limitations in energy resources and environmental problems such as greenhouse gas, air pollution, etc. Biogas has sustainable and renewable characteristics that can be used as an alternative energy source to alleviate these problems. In this study, we proposed a novel cavity matrix combustor that directly enables the combustion of what is produced in small and medium-sized biogas facilities without separation or purification. We also identified combustion characteristics for changes in air ratio, gas feed rate, biogas ratio, and exhaust gas recirculation rate and proposed optimal operating conditions based on this. The performance test result showed that the cavity matrix combustor is excellent for biogas combustion. The optimal operating conditions for the combustor are: the biogas ratio is 60% of CH4 and 40% of CO2, the air ratio is 1.1, the gas feed rate is 30L/min, and the exhaust gas recirculation rate is 100%. At this time, the combustion efficiency was 87%, and the unburned components were CO, UHCs, which are 0.01% and 0.05%, respectively, and NOx was 1ppm.

APA, Harvard, Vancouver, ISO, and other styles

21

Beach, D. B., A. J. Rondinone, B. G. Sumpter, S. D. Labinov, and R. K. Richards. "Solid-State Combustion of Metallic Nanoparticles: New Possibilities for an Alternative Energy Carrier." Journal of Energy Resources Technology 129, no. 1 (July 30, 2006): 29–32. http://dx.doi.org/10.1115/1.2424961.

Full text

Abstract:

As an alternative to conventional methods of conveying and delivering energy in mobile applications or to remote locations, we have examined the combustion of nanostructured metal particles assembled into metal clusters. Clusters containing iron nanoparticles (∼50nm in diameter) were found to combust entirely in the solid state due to the high surface-to-volume ratio typical of nanoparticles. Optical temperature measurements indicated that combustion was rapid (∼500ms), and occurred at relatively low peak combustion temperatures (1000-1200K). Combustion produces a mixture of Fe(III) oxides. X-ray diffraction and gravimetric analysis indicated that combustion was nearly complete (93–95% oxidation). Oxide nanoparticles could be readily reduced at temperatures between 673K and 773K using hydrogen at 1atm pressure, and then passivated by the growth of a thin oxide layer. The nanostructuring of the particles is retained throughout the combustion–regeneration cycle. Modeling of the combustion process is in good agreement with observed combustion characteristics.

APA, Harvard, Vancouver, ISO, and other styles

22

Liu, Jiahui. "Introduction of Abnormal Combustion in Hydrogen Internal Combustion Engines and the Detection Method." Trends in Renewable Energy 8, no. 1 (2022): 38–48. http://dx.doi.org/10.17737/tre.2022.8.1.00136.

Full text

Abstract:

As a clean, environmentally friendly and renewable energy source, hydrogen as an alternative engine fuel can greatly reduce atmospheric pollution and alleviate the shortage of oil resources, and is the most promising alternative fuel for vehicles among new fuels. However, due to its fast combustion rate and wide ignition limit, hydrogen often shows abnormal combustion phenomena (such as pre-ignition, backfire and knock), when it is used in the engine, thus affecting the performance and normal use of engines. In this paper, the advantages and disadvantages of hydrogen as an alternative fuel for the engine are summarized according to the characteristics of hydrogen. On this basis, the mechanism, influence factors and harm of abnormal combustion in the hydrogen internal combustion engine are analyzed and summarized, which provides a theoretical basis for solving abnormal combustion problems. Finally, several commonly used abnormal combustion detection methods are summarized.

APA, Harvard, Vancouver, ISO, and other styles

23

SINGH, Prabhat, Dharmahinder Singh CHAND, Sourav PAL, and Aadya MISHRA. "Influence of Alternative Fuel Ratio on Turbocharger Combustor." INCAS BULLETIN 11, no. 4 (December 8, 2019): 179–89. http://dx.doi.org/10.13111/2066-8201.2019.11.4.16.

Full text

Abstract:

The present study investigates the effects of alternative fuel properties on combustion performance, in order to ensure reliable combustion performance using various fuel blends for powering an engine. The increasing rate of fuel cost and depletion of fossil fuels has led to the search for alternate fuels. Palm biodiesel derived from palm fatty acids meets the fuel requirements of an aircraft and is compatible with any engine without modifications. Viability of using a blend of present fossil fuels with biodiesel is studied. The engine was operated with petrol, diesel, palm biodiesel and a blend of these three fuels as a pair, with various ratios. The fuel was injected into the combustion chamber at an angle of 45o to the airflow and ignited using a spark plug. The blended fuel is found to have better efficiency than petrol or diesel. Furthermore, the low cost and abundant availability of the biofuel make it a viable alternative to the petroleum-based fuels currently in use. The combustion time and ignition delay are decreased with efficient biofuel due to high oxygen content and high octane number of the biofuel.

APA, Harvard, Vancouver, ISO, and other styles

24

Sniezhkin, Yu F., and D. M. Korinchuk. "PEAT IS AN EFFECTIVE ALTERNATIVE FUEL." Thermophysics and Thermal Power Engineering 46, no. 3 (August 30, 2022): 5–15. http://dx.doi.org/10.31472/ttpe.3.2022.1.

Full text

Abstract:

The article considers peat as an effective alternative fuel. Its reserves and directions of use in the world and in Ukraine presented and analyzed. The analysis showed that the geological reserves of peat in Ukraine are equivalent to 600 billion cubic meters of natural gas. The main reserves of peat are concentrated in the districts of Polissia. Industrial peat extraction can take place in 12 regions: Volyn, Rivne, Zhytomyr, Kyiv, Cherkasy, Poltava, Sumy, Chernihiv, Khmelnytskyi, Ternopil, Lviv, and Ivano-Frankivsk. It has been shown that, compared to traditional energy carriers, peat fuel has a lower heat of combustion and a fairly high ash content, but during combustion it emits almost no toxic substances and, accordingly, pollutes the environment much less. In home furnaces, peat fuel burned with a higher efficiency than coal, and the ash used as fertilizer. The estimated cost of 1Gj of lower heat of combustion of various types of fuel according to the data of recent years shows a noticeable advantage of peat fuels. The cost of thermal energy obtained from burning 1 ton of peat briquettes is 2 times cheaper than when using coal, 3 times cheaper than gas, and 4 times cheaper than fuel oil. Peat fuel is suitable for use in all types of modern solid fuel combustion devices, which increases the prospect of its implementation on the domestic and foreign fuel markets. The technology for using plant biomass as a filler in peat briquettes and granules developed. Special attention paid to wood, buckwheat husk, sunflower and other grain crops, which have a lower ash content and a higher heat of combustion, the potential of which waste is significant, and the fuel characteristics are able to increase the heat of combustion of composite peat briquettes or peat granules and reduce their ash content. Taking into account that peat used in large quantities as fertilizer for agriculture, a technology developed according to which humic substances first removed from peat for fertilizer, and then biomass added to this peat and a composite peat fuel obtained. This technology involves the integration of technology and extraction of humic substances into the production cycle of a peat briquette plant for the production of composite fuel. The wide implementation of the developed technology of composite peat briquettes at peat briquette factories will allow to increase the production of briquettes by almost 2 times without increasing the consumption of peat raw materials and to produce peat fuel in the range of 0.18-0.2% of geological reserves, which is equivalent to the replacement of more than 1 billion m3 of natural gas. All this allows us to draw a conclusion about the positioning of peat fuel as an effective local type of fuel, which is an alternative to gas and coal.

APA, Harvard, Vancouver, ISO, and other styles

25

Жуков, Евгений, Evgeniy Jukov, Константин Меняев, Konstantin Menyaev, Дмитрий Таймасов, Dmitriy Taymasov, Николай Гаврин, and Nikolay Gavrin. "Comprehensive use of wood and agricultural waste in the energy sector of Siberia." Safety in Technosphere 6, no. 6 (May 23, 2018): 61–68. http://dx.doi.org/10.12737/article_5af02c6f319c41.30850749.

Full text

Abstract:

The article considers the methods of increasing technoeconomic and ecological indices of boilers of little and average power by the means of vertical-way combustion of alternative fuels (eg. husks, chips, wood waste). We analyzed the technology of combustion of solid fuels from plant biomass and revealed several issues in the combustion of light sailing particles. The article is dedicated to the investigation of the properties of alternative fuels, to the generation and refinement of furnace arrangements for combustion of low-grade fuels. The results of our work represent a new construction design of the furnace chamber for effective combustion of alternative fuels. The new construction design of the furnace chamber is obtained via the aerodynamic modelling with the use of the «SigmaFlame» software.

APA, Harvard, Vancouver, ISO, and other styles

26

Malycha, Constantin Alexander, and Andrew Peter Gilmour. "Breaking the Path Dependency of the Internal Combustion Engine." Deakin Papers on International Business Economics 2, no. 1 (July 1, 2009): 1–6. http://dx.doi.org/10.21153/dpibe2009vol2no1art197.

Full text

Abstract:

The dominance of the internal combustion engine appears to be waning. Recognition that oil, the driving force behind the internal combustion engine, is a limited and therefore unsustainable resource has provided the impetus for the development of alternative powertrains. In this paper we consider how the internal combustion engine controls the market, while identifying the barriers for change, and, finally, examine the potential replacement of the internal combustion engine with a sustainable alternative.

APA, Harvard, Vancouver, ISO, and other styles

27

MARSZAŁEK, Natalia. "Performance analysis of turbofan engine with additional combustion chamber fueled by alternative fuel." Combustion Engines 179, no. 4 (October 1, 2019): 249–53. http://dx.doi.org/10.19206/ce-2019-441.

Full text

Abstract:

Presented paper is focused on the performance analysis of turbofan engine with additional combustion chamber fueled by alternative fuel. Additional combustion chamber was situated between high pressure turbine and low pressure turbine. Such configuration is also know under the name inter turbine burner (ITB). As an alternative fuels burn in additional combustion chamber were selected cryogenics fuels: liquid hydrogen and liquid methane. The main combustion chamber was supplied by conventional aviation fuel - kerosene. Thermodynamic model of turbofan engine with ITB was implemented in MATLAB environment. The problem of modeling an additional combustion chamber was presented.Analysis was carried out for take-off conditions. Obtained results indicate that implementation of ITB exert a positive influence on engine performance result in thrust increase.

APA, Harvard, Vancouver, ISO, and other styles

28

Hissa, Michaela, Seppo Niemi, Katriina Sirviö, Antti Niemi, and Teemu Ovaska. "Combustion Studies of a Non-Road Diesel Engine with Several Alternative Liquid Fuels." Energies 12, no. 12 (June 25, 2019): 2447. http://dx.doi.org/10.3390/en12122447.

Full text

Abstract:

Sustainable liquid fuels will be needed for decades to fulfil the world’s growing energy demands. Combustion systems must be able to operate with a variety of renewable and sustainable fuels. This study focused on how the use of various alternative fuels affects combustion, especially in-cylinder combustion. The study investigated light fuel oil (LFO) and six alternative liquid fuels in a high-speed, compression-ignition (CI) engine to understand their combustion properties. The fuels were LFO (baseline), marine gas oil (MGO), kerosene, rapeseed methyl ester (RME), renewable diesel (HVO), renewable wood-based naphtha and its blend with LFO. The heat release rate (HRR), mass fraction burned (MFB) and combustion duration (CD) were determined at an intermediate speed at three loads. The combustion parameters seemed to be very similar with all studied fuels. The HRR curve was slightly delayed with RME at the highest load. The combustion duration of neat naphtha decreased compared to LFO as the engine load was reduced. The MFB values of 50% and 90% occurred earlier with neat renewable naphtha than with other fuels. It was concluded that with the exception of renewable naphtha, all investigated alternative fuels can be used in the non-road engine without modifications.

APA, Harvard, Vancouver, ISO, and other styles

29

Kowalewicz, A., and M. Wojtyniak. "Alternative fuels and their application to combustion engines." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 219, no. 1 (January 2005): 103–25. http://dx.doi.org/10.1243/095440705x6399.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Mack, J. H., D. L. Flowers, B. A. Buchholz, and R. W. Dibble. "Using biofuel tracers to study alternative combustion regimes." Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 259, no. 1 (June 2007): 414–20. http://dx.doi.org/10.1016/j.nimb.2007.02.097.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Carsky, Milan, Olga Solcova, Karel Soukup, Tomas Kralik, Kamila Vavrova, Lukas Janota, Miroslav Vitek, Stanislav Honus, Marek Jadlovec, and Lenka Wimmerova. "Techno-Economic Analysis of Fluidized Bed Combustion of a Mixed Fuel from Sewage and Paper Mill Sludge." Energies 15, no. 23 (November 27, 2022): 8964. http://dx.doi.org/10.3390/en15238964.

Full text

Abstract:

The treatment and disposal of sewage sludge is one of the most important and critical issues of wastewater treatment plants. One option for sludge liquidation is the production of fuel in the form of pellets from mixed sewage and paper mill sludge. This study presents the results of the combustion of pelletized fuels, namely sewage and paper mill sludge, and their 2:1 and 4:1 blends in a fluidized bed combustor. The flue gas was analysed after reaching a steady state at bed temperatures of 700–800 °C. Commonly used flue gas cleaning is still necessary, especially for SO2; therefore, it is worth mentioning that the addition of paper mill sludge reduced the mercury concentration in the flue gas to limits acceptable in most EU countries. The analysis of ash after combustion showed that magnesium, potassium, calcium, chromium, copper, zinc, arsenic, and lead remained mostly in the ash after combustion, while all cadmium from all fuels used was transferred into the flue gas together with a substantial part of chlorine and mercury. The pellets containing both sewage and paper mill sludge can be used as an environmentally friendly alternative fuel for fluidised bed combustion. The levelized cost of this alternative fuel is at the same current price level as lignite.

APA, Harvard, Vancouver, ISO, and other styles

32

Kuznetsov, V. V., and A. V. Loik. "Use of energy storage materials as alternative fuel for stationary and transport power stations." Izvestiya MGTU MAMI 8, no. 4-1 (February 20, 2014): 41–46. http://dx.doi.org/10.17816/2074-0530-67660.

Full text

Abstract:

This paper considers the possibility of usage of energy-accumulating substances (EAS) as alternative fuel for transport and stationary gas turbine engines and power stations. Three-component alloys Si, Al and Fe are studied as industrial EAS. The study determined the heats of combustion and adiabatic temperatures of EAS combustion in the environment of superheated steam at different values of oxidant excess coefficient. Composition of condensed combustion products is defined for various fractional composition of EAS. It is also determined the completeness of combustion EAS.

APA, Harvard, Vancouver, ISO, and other styles

33

Marszałek, Natalia. "The impact of thermodynamics parameters of turbofan engine with ITB on its performance." Combustion Engines 182, no. 3 (September 30, 2020): 16–22. http://dx.doi.org/10.19206/ce-2020-303.

Full text

Abstract:

Presented paper is focused on the influence of additional combustor chamber named inter turbine burner on turbofan engine unit parameters. Investigation has been made how changing selected engine parameters affect its performance. A comparison has been made between the baseline turbofan engine and the engine with ITB. Engine thermodynamics model was prepared in MATLAB software. Main combustion chamber was fueled by kerosene, commmonly used in aviation transport, while inter turbine burner by alternative fuel. As an alternative fuel were choose liquid hydrogen and methane. Numerical researches were carried out for take-off conditions. Engine specific thrust and specific fuel consumption were obtained as a function of bypass ratio, turbine inlet temperature, fan pressure ratio, HPC and LPC pressure ratio. The results of the study indicate that hybrid engine with additional combustion chamber fueled by hydrogen fuel is more efficient than other studied cases.

APA, Harvard, Vancouver, ISO, and other styles

34

Dana, Alon Grinberg, Gennady E. Shter, and Gideon S. Grader. "Nitrogen-based alternative fuel: an environmentally friendly combustion approach." RSC Adv. 4, no. 20 (2014): 10051–59. http://dx.doi.org/10.1039/c3ra47890d.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Zabaniotou, Anastasia, and Vicky Skoulou. "Application of pilot technologies for energy utilization of agricultural residues in Northern Greece." Thermal Science 11, no. 3 (2007): 125–34. http://dx.doi.org/10.2298/tsci0703125z.

Full text

Abstract:

The enormous potential of agro biomass can be exploited to produce sustainable bioenergy. Proper management and further exploitation of this potential could lead to economically profitable approximations and solutions for the agricultural industry and even energy production industry. Gasification in-situ with energy production or pyrolysis of the above mentioned residues, under a non-oxidizing atmosphere for alternative fuels production could be a solution to the environmental problems that land filling or conventional combustion could create. The present work focuses on combustion and pyrolysis of cotton gin residues in Greece, as an alternative way of energy production. The purpose of presentation of a case study of the two alternatives methods (combustion and gasification or pyrolysis), by using cotton ginning waste as biofuel, is to show the appropriateness of new bioenergy sources by coupling them with energy production technologies. These technologies can be applied in northern Greece as well as in other Balkan or Mediterranean countries. .

APA, Harvard, Vancouver, ISO, and other styles

36

Choi, Seunghwan, Chunghwan Jeon, and Youngjune Chang. "Combustion Characteristics of Stratified Mixture in a CNG Direct Injection Combustion Bomb using 2-Stage Injection(CNG and Alternative Fuels, CNG Engines)." Proceedings of the International symposium on diagnostics and modeling of combustion in internal combustion engines 2004.6 (2004): 401–7. http://dx.doi.org/10.1299/jmsesdm.2004.6.401.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Larionov, L. B., P. A. Boloev, P. I. Iliin, A. N. Kabanov, I. V. Siryaeva, and E. O. Palamodov. "Applicability of alternative fuels." Izvestiya MGTU MAMI 9, no. 3-1 (February 10, 2015): 76–80. http://dx.doi.org/10.17816/2074-0530-67208.

Full text

Abstract:

The paper discusses applicability of different types of alternative fuels in Russia. Nowadays there are known and tested many types of alternative fuels, which are produced not from oil. These are spirits, hydrogen, ethanol, methanol, rapeseed oil, biogas, etc. The composition and features of the alternative fuels are shown. Among these fuels we would like to allocate the biogas. Biogas is an alternative source of energy and now it can also be used as a fuel for internal combustion en-gines.

APA, Harvard, Vancouver, ISO, and other styles

38

Magonski, Zbigniew. "Meter for the measurement heat of combustion." International Symposium on Microelectronics 2011, no. 1 (January 1, 2011): 000938–46. http://dx.doi.org/10.4071/isom-2011-tha2-paper4.

Full text

Abstract:

This paper presents a proposal of a thermal instrument intended for the evaluation of heat energy of fluid fuels. Two thermal devices the flowmeter and the combustor are the basic components of the instrument. The meter maintains a constant temperature in the vicinity of the combustion zone. The amount of heat energy in the fuel is calculated as the ratio of the electric power change expressed in Watts to the change of fuel supply delivered to the combustor within a time period of 1sek. The method enables a direct evaluation of fuel energy expressed in Jules per unit of mass or volume. For some applications, the meter may be a good alternative for a bulky bomb calorimeter.

APA, Harvard, Vancouver, ISO, and other styles

39

Tabatabaei, Meisam, Homa Hosseinzadeh-Bandbafha, Mortaza Aghbashlo, and Abdul-Sattar Nizami. "Integrated sustainability analysis of combustion engines (ISACE) as an alternative to classical combustion analysis." Renewable and Sustainable Energy Reviews 131 (October 2020): 109981. http://dx.doi.org/10.1016/j.rser.2020.109981.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Amann, C. A. "Past Experiences With Automotive External Combustion Engines." Journal of Engineering for Gas Turbines and Power 121, no. 3 (July 1, 1999): 546–50. http://dx.doi.org/10.1115/1.2818507.

Full text

Abstract:

GMR (General Motors Research Laboratories, now GM R&D Center) has a history of improving the internal combustion engine, especially as it relates to automotive use. During the quarter century from 1950–75, considerable effort was devoted to evaluating alternative powerplants based on thermodynamic cycles different from those on which the established spark-ignition and diesel engines are founded. Two of these, the steam engine and the Stirling engine, incorporated external combustion. Research on those two alternatives is reviewed. Both were judged to fall short of current needs for commercial success as prime movers for conventional automotive vehicles.

APA, Harvard, Vancouver, ISO, and other styles

41

Moreno, Joseba, Matthias Hornberger, Max Schmid, and Günter Scheffknecht. "Oxy-Fuel Combustion of Hard Coal, Wheat Straw, and Solid Recovered Fuel in a 200 kWth Calcium Looping CFB Calciner." Energies 14, no. 8 (April 13, 2021): 2162. http://dx.doi.org/10.3390/en14082162.

Full text

Abstract:

The fluidized bed combustion (FBC) of biomass and solid recovered fuel (SRF) is globally emerging as a viable solution to achieve net-negative carbon emissions in the heat and power sector. Contrary to conventional fossil fuels, alternative fuels are highly heterogeneous, and usually contain increased amounts of alkaline metals and chlorine. Hence, experimental studies are mandatory in order to thoroughly characterize the combustion behavior and pollutant formation of non-conventional fuels in novel applications. This work gives an overview of experimental investigations on the oxy-fuel combustion of hard coal, wheat straw, and SRF with a limestone bed in a semi-industrial circulating fluidized bed (CFB) pilot plant. The CFB combustor was able to be operated under different fuel blending ratios and inlet O2 concentrations, showing a stable hydrodynamic behavior over many hours of continuous operation. The boundary conditions introduced in this study are expected to prevail in carbon capture and storage (CCS) processes, such as the oxy-fuel combustion in the CFB calciner of a Calcium Looping (CaL) cycle for post-combustion CO2 capture.

APA, Harvard, Vancouver, ISO, and other styles

42

S, Jacob, and Karikalan L. "Optimization of Combustion Characteristics of Diesel Engine Fueled by Biofuels and Its Diesel Blends with Additive Titanium Dioxide Nano-Particles." International Journal of Heat and Technology 39, no. 6 (December 31, 2021): 1973–78. http://dx.doi.org/10.18280/ijht.390636.

Full text

Abstract:

The fuel crisis throughout the world made many countries to be aware of their vulnerability to oil shortages. So many researches are still in progress and focus on the growth of bio fuel usage. In this regard, alternative fuels and the drivetrain play a major rule in critical emission issues. However, at the same time, enormous and vast number of vehicles have started to claim and place their heavy demand for alternative sources of fuel. Of course, gasoline and diesel, the conventional fuels will become scarce and much costlier. With a present known reserves and steep rise of demand and rate of consumption, hope of crude oil import is not going to last long. The CFD investigation is to find the combustion characteristics of the BioFuel with the various compositions of mixing with diesel, the Kirloskar IC Engine is taken for this research and the results of pressure, velocity, turbulence kinetic energy, temperature gradients, fuel combustions, oxidizers volume fractions also obtained from the CFD analysis results. CFD Analysis of Biodiesel combustion done in ANSYS Fluent. Software modeling of IC Engine done in CATIA V5 Software. Jatropha Methyl Ester (JME) and Mahua Methyl Ester (MME) are used for this research. Combustion characteristics in addition to emission parameters are assessed then a conclusion can be drawn.

APA, Harvard, Vancouver, ISO, and other styles

43

Martín-Gamboa, Mario, Luis C. Dias, Paula Quinteiro, Fausto Freire, Luís Arroja, and Ana Cláudia Dias. "Multi-Criteria and Life Cycle Assessment of Wood-Based Bioenergy Alternatives for Residential Heating: A Sustainability Analysis." Energies 12, no. 22 (November 19, 2019): 4391. http://dx.doi.org/10.3390/en12224391.

Full text

Abstract:

Moving towards a global bioeconomy can mitigate climate change and the depletion of fossil fuels. Within this context, this work applies a set of multi-criteria decision analysis (MCDA) tools to prioritise the selection of five alternative bioenergy systems for residential heating based on the combination of three commercial technologies (pellet, wood stove and traditional fireplace) and two different feedstocks (eucalypt and maritime pine species). Several combinations of MCDA methods and weighting approaches were compared to assess how much results can differ. Eight indicators were used for a sustainability assessment of the alternatives while four MCDA methods were applied for the prioritisation: Weighted Sum Method (WSM), Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS), Elimination and Choice Expressing Reality (ELECTRE), and Preference Ranking Organization Method for Enrichment Evaluation (PROMETHEE). Regarding the sustainability performance indicators, the highest environmental impacts were calculated for the fireplace alternatives, and there was not a best environmental option. Also, no clear trend was found for the economic and social dimensions. The application of MCDA tools shows that wood stove alternatives have the best sustainability performance, in particular wood stove with combustion of maritime pine logs (highest scores in the ranking). Regarding the worst alternative, fireplaces with combustion of eucalypt logs ranked last in all MCDA rankings. Finally, a sensitivity analysis for the weighting of the performance indicators confirmed wood stoves with combustion of maritime pine logs as the leading alternative and the key role of the analysts within this type of MCDA studies.

APA, Harvard, Vancouver, ISO, and other styles

44

Jadlovec, Marek, and Stanislav Honus. "Developing of experimental combustion boiler with stationary fluidized bed and multifuels combustion." MATEC Web of Conferences 345 (2021): 00014. http://dx.doi.org/10.1051/matecconf/202134500014.

Full text

Abstract:

Due to the outdated higher requirements for reducing emissions of harmful substances in the combustion of fossil fuels and waste in particular, more and more research is needed, which will lead to the provision of various alternatives to influence the emerging pollutants into the atmosphere. This study deals with the development of experimental combustion units with a stationary fluidized bed with regulated parameters of primary and secondary air supply, performed fuel supply and flue gas parameters. Combustion is carried out in a bubbling stationary fluidized bed with a height of 100 mm and a diameter of 140 mm. The fluidized bed consists of ST 54 glass sand with a mean grain size of 0.22 mm. The basic purpose of the study is to describe the construction of the experimental unit with verification of its functionality. On the experimental equipment was realized experiments in terms of combustion various types of fuels, whether they are fossil fuels (coal), alternative fuels as straw pellets, sludge from wastewater treatment plants, sludge from paper mills or their combinations. Determination of temperature and pressure along the entire length of the unit is a device equipped with thermocouples and pressure sensors.

APA, Harvard, Vancouver, ISO, and other styles

45

Rijo, P., and P. J. Coelho. "Numerical investigation of fuel flexibility in a small-scale flameless combustor." Journal of Physics: Conference Series 2116, no. 1 (November 1, 2021): 012017. http://dx.doi.org/10.1088/1742-6596/2116/1/012017.

Full text

Abstract:

Abstract Numerical simulation of a laboratory flameless combustor was performed to investigate the flexibility to burn alternative fuels to natural gas. The studied fuels are biogas, syngas and a mixture of ammonia and methane. The inlet temperatures of air and fuel, the equivalence ratio and the geometrical characteristics of the combustor were maintained constant. The results show that flameless combustion is observed in the biogas and in the NH3/CH4 mixture, while the syngas burns according to the conventional non-premixed combustion mode. According to the predictions, the biogas emits 1.1 ppm of NOx and 229 ppm of CO, syngas produces 7.8 ppm of NOx and 35 ppm of CO and the NH3/CH4 mixture emits about 3900 ppm of NOx and 608 ppm of CO. The high NOx and CO emissions in the NH3/CH4 mixture show that the combustor needs to be optimized to burn a nitrogen-containing fuel.

APA, Harvard, Vancouver, ISO, and other styles

46

Zhu, Jianjun, Peng Li, and Xin Geng. "Combustion characteristics of different premixed methanol charge compression ignition combustion modes." Thermal Science 24, no. 3 Part A (2020): 1609–15. http://dx.doi.org/10.2298/tsci190512028z.

Full text

Abstract:

This paper proposes two dual fuel combustion modes for a Diesel engine based on two alternative fuels and explores the influence of engine compression ratio on combustion and fuel economy characteristics under heavy loads. The results show that reducing the compression ratio can reduce the pressure rise rate of the combustion mode of methanol premixed charge induced ignition, owing to a decrease in the brake thermal efficiency.

APA, Harvard, Vancouver, ISO, and other styles

47

Cernat, Alexandru, Constantin Pana, Niculae Negurescu, Gheorghe Lazaroiu, Cristian Nutu, and Dinu Fuiorescu. "Hydrogen—An Alternative Fuel for Automotive Diesel Engines Used in Transportation." Sustainability 12, no. 22 (November 10, 2020): 9321. http://dx.doi.org/10.3390/su12229321.

Full text

Abstract:

Considering the current environmental restrictions, particularly those imposed on fossil fuel exploitation, hydrogen stands out as a very promising alternative for the power and transportation sectors. This paper investigates the effects of the employment of hydrogen in a K9K automotive diesel engine. Experiments were conducted at a speed of 2000 min−1 with various engine load levels of 40%, 55%, 70%, and 85%; several quantities were monitored to evaluate the performance with hydrogen use in terms of brake-specific energetic consumption (BSEC), fuel economy, maximum pressure, and heat-release characteristics. It was found that at 55% engine load, the engine efficiency increased by 5.3% with hydrogen addition, achieving a diesel fuel economy of 1.32 kg/h. The rate of increase of the peak pressure and maximum pressure started to increase as a consequence of the higher fuel quantity that burned in the premixed combustion phase, while still remaining within reliable operational limits. The accelerated combustion and augmented heat release rate resulted in a combustion duration that was reduced by 3° CA (crank angle degree), achieving a mass fraction burned percentage of 10% to 90% earlier in the cycle, and the combustion variability was also influenced. Hydrogen use assured the decrease of CO2, HC, NOx, and smoke emission levels in comparison with classic fueling.

APA, Harvard, Vancouver, ISO, and other styles

48

Rocha, F. N. C., J. A. Martins, and E. C. Romão. "AN ALTERNATIVE AND SIMPLE MANNER TO CALCULATE THE THERMAL EFFICIENCY OF COMBUSTION ENGINES." Revista de Engenharia Térmica 13, no. 1 (June 30, 2014): 87. http://dx.doi.org/10.5380/reterm.v13i1.62076.

Full text

Abstract:

This papers aims to present techniques and methods to develop an alternative equation to determine the thermal efficiency of internal combustion engines. Towards interpolation of data, obtained from thermodynamic tables, it presents a function that allows a faster calculation of efficiency for combustion engines.

APA, Harvard, Vancouver, ISO, and other styles

49

Levko, S. F., B. V. Dolishnii, and В. М. Melnyk. "Prospective types of alternative fuels for internal combustion engines." Oil and Gas Power Engineering, no. 2(32) (December 27, 2019): 97–106. http://dx.doi.org/10.31471/1993-9868-2019-2(32)-97-106.

Full text

Abstract:

Currently, the disposal and recycling of the alcohol industry products creates a number of difficulties due to the lack of well-established recycling lines in Ukraine. Since 1998, eight enterprises of the state-owned concern Ukrspirt have been converted to produce high-octane oxygen-containing additives (CFCs) for ethanol-based fuels to organize the processing of waste from the alcohol industry. During this time, they produced 28.2 thousand tonnes of CALs, but CALA enterprises face great difficulties in selling their products, as they are new and expensive. The influence of fusel oil additives on commodity fuels on the main physical and technical indicators of the obtained alternative fuels is considered in the paper. According to the results of studies of octane number, we have established the optimal compositions of fuel mixtures of fusel oils with gasoline A-80 can contain up to 10% of the latter. For mixtures of fusel oils with diesel fuel by cetane number, their optimum content in diesel fuel is from 4 to 10% by volume. But, according to the trends of the development of diesel engines, the compression ratio increases, which allows the use of diesel fuel with higher cetane number, and therefore it is possible to raise the content of fusel oils in diesel fuel to 12%. According to the results of studies of the environmental performance of the ZIL-130 engine when fusel oils are added to commercial gasoline in an amount of 2 to 10% vol. the CO content in ICE exhaust gases decreases by 9.3%, fuel consumption increases by 6.5%, hydrocarbons by 10.2% and nitrogen oxide by 16.9%. As a result of increasing the content of fusel oils in diesel from 0 to 6%, there is an increase in mass flow rate of fuel to 6.1%, an increase in the concentration of hydrocarbons to 10% and nitrogen oxides by 1.9% in the exhaust gases of the engine D21A1. Thus, as we see today, along with traditional fuels for internal combustion engines, it is possible to use their alternative substitutes quite efficiently both in their pure form and in mixtures with them. There are all prerequisites for this in Ukraine and the region, the only question is the financing of these projects.

APA, Harvard, Vancouver, ISO, and other styles

50

Kořistková, Michaela, Silvie Vallová, and pavel Kolat. "Co-combustion Coal and Waste Alternative Fuel: Thermogravimetric Analysis." Transactions of the VŠB - Technical University of Ostrava, Mechanical Series 57, no. 1 (June 30, 2011): 133–40. http://dx.doi.org/10.22223/tr.2011-1/1848.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Journal articles on the topic 'Alternative combustion'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles