Alternative Fuels Articles
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Performance and emissions of a dual fuel operated diesel engine
Vegetable oil and its esters (biodiesel) are the renewable alternative fuels that can be used as a substitute for diesel in the diesel engines. The vegetable oil fuelled diesel engine results in lower efficiency and higher smoke emission. Hence in this work, an attempt has been made to use inedible and under utilised mahua oil (MO) as a substitute for diesel by fumigating liquefied petroleum gas ...
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Performance and emission characteristics of methyl ester from non–edible oils in a DI diesel engine with additive and advance injection
The main objective of this investigation was to study the use of neat methyl esters in DI diesel engine experimentally. Preparation of methyl esters were from non–edible oils of Jatropha curcus, Pongamia pinnata and neem (Azadirachta indica) using transestrification process. The results of the use of neat methyl esters without any modification in the engine parameters and fuel shows reduced ...
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Asia-Pacific Analysis: Go green not nuclear
Crispin Maslog says the region should follow the Philippines' lead and focus on renewable, not nuclear power. A year after the Fukushima nuclear disaster, questions remain over the role of nuclear power in the developing world, including South-East Asia and the Pacific. Nuclear power had a renaissance, driven by rapidly growing energy demands, and fading memories of high-profile disasters at ...
By SciDev.Net
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Gaseous release in LiNH2–MgH2 systems
Hydrogen is considered a safe and clean alternative to fossil fuels. Hydrogen storage is currently obtained by compressing the gas at high pressure. Researchers are currently attempting to tackle safety and energy density issues by locking hydrogen into solids, packing large quantities into small volumes. However, most of the known solids (i.e. intermetallics) show very low gravimetric density, ...
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Opportunities for energy innovators
For a long time ‘clean’ and ‘green’ marked the forward trend in the energy industry. Then came the quest for ‘smart’ energy. And now ‘innovation’ is the buzzword. It’s easy to see why. As Americans, we believe our ability to innovate sets us apart in today’s international market. Sure China can manufacture computers and cell phones ...
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Performance and energy analyses of a diesel engine fuelled with Koroch seed oil methyl ester and its diesel fuel blends
Performance of a single cylinder four–stroke diesel engine is analysed in the light of first law of thermodynamics in this study considering 10% (B10) to 40% (B40) (by volume) blending of Koroch seed oil methyl ester (KSOME) with diesel as fuels. An energy balance study is carried out to quantify the various losses associated with diesel engine processes on the basis of experimental data. ...
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Effects of injection timing on the performance and emissions of a diesel engine fuelled with diethyl ether blended thevetia peruviana biodiesel
Fast depletion of petroleum reserves and existing emission norms drive us to search for the apt fuel for the IC engines. Biodiesel derived from vegetable oils is being tried now–a–days in most of the researches. A number of researches are in progress to reduce the emissions by using various techniques. In this study, the injection timing of a single cylinder diesel engine is advanced from 23° to ...
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The performance and emission characteristics of a diesel engine using preheated Kusum oil and Kusum diesel blend
Rapidly depleting conventional petroleum resources have prompted research for alternative fuels. Among various possible options for internal combustion engines, fuels derived from triglycerides (vegetable oils/animal fats) are a promising substitute for diesel fuel. Vegetable oils pose some detrimental characteristics like high viscosity and low volatility compared to diesel fuel. In the present ...
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Externalities in North–South technology transfer: the case of CNG engines in Iran
This contribution focuses on illuminating the challenges and difficulties of North–South technology transfer. The central message of this paper is that North–South technology transfer is not simply a contract between two transacting firms and does not depend only on intra–firm and inter–firm factors. The process may also be influenced by a number of external factors, beyond the control or power ...
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Alternative fuels and managing a diverse fuel portfolio
Alternative fuels are becoming more prevalent in the marketplace at large and particularly within the waste industry. For example, Waste Management recently added its lOOOth natural gas fueled truck to its fleet this past summer. The alternative fuels that are going to work best for your fleet will take some investigation and research, but the prevailing data indicates that these solutions will ...
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Landfills types of technologies for converting LFG into Energy
A number of factors, including the availability of an energy market, project costs, potential revenue sources, and other technical considerations, can determine which technologies are most appropriate for a particular landfill gas-to-energy (LFGE) project. Technologies for converting LFG into energy include the following. Electricity Generation Approximately 70 percent of the LFGE projects ...
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Parametric study of biodiesel quality and yield using a bench-top processor
Biodiesel is a renewable liquid fuel alternative to petrodiesel. It is produced by the transesterification of vegetable oil and alcohol in the presence of a catalyst. A 1.5 L bench-top biodiesel processor was constructed to study the effect of feedstock and operating conditions on the conversion and the biodiesel quality. Biodiesel was produced from several oil feedstocks using methanol and ...
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Effect of hydrogen enriched air on the performance and emissions of mahua oil fuelled diesel engine
Neat vegetable oils as fuels for diesel engines give rise to engine performance and durability problems due to the differences in some of the properties between vegetable oils and diesel. The objective of the present work was to improve the performance of mahua oil fuelled diesel engine using hydrogen enriched air. Mahua oil was used as the main fuel in a direct injection diesel engine and ...
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Emissions and performance of a stationary diesel engine run on biodiesel blends
This paper presents an investigation into the effect of biodiesel blending on emissions and efficiency in a stationary diesel engine. Rapeseed based biodiesel blended in increments of 25% with fossil diesel. The emissions of CO2 show a decrease in emission (g/kWh) with increased engine load. Within the range of tests carried out, the NOx emissions from biodiesel and its blends proved to be higher ...
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Performance analysis of a single cylinder DI diesel engine using different biodiesel
Biodiesel produced from cottonseed oil is quite a promising alternative fuel for diesel engines. Use of vegetable oils in diesel engines leads to slightly inferior performance and higher smoke emissions due to their high viscosity and carbon residue. But the performance of vegetable oils can be improved by modifying them through the transesterification process. The research work discusses the ...
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Environmental impact of using biodiesel as fuel in transportation: a review
The environmental pollution and global warming associated with the use of fossil fuels, has forced a search for alternative fuels in transportation. This paper presents a review of the use of biodiesel in CI engines and its environmental impacts. There is a significant reduction in the emission of unburned hydrocarbons, polyaromatic hydrocarbons and soot, particulate matters, carbon monoxide, ...
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Combined heat & power is a clean, efficient and economic energy solution
The 21st century has highlighted a need for clean, efficient and economic energy, which has put Combined Heat & Power (CHP) into the limelight. By providing on-site power generation, waste heat recovery and system integration, CHP offers a realistic, near-term solution for exceptional energy efficiency and emission reduction. CHP systems can generate electricity locally while they recover ...
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Efficiency of a standard gas-turbine power generation cycle running on different fuels
This paper presents a study of second-law efficiency in a standard Brayton combined cycle power generation, using several paraffinic fuels ranging from methane to heptane. The main objective of the study was to identify a trend with the number of carbon atoms in the compound. In this way, a qualitative criterion can be built to evaluate the properties of poor-quality gas turbine fuels containing ...
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Choosing a hybrid car using a hierarchical decision model
This paper describes and analyses an operational decision model of the customer decision process in selecting a new hybrid automobile. Three types of extreme customer profiles are introduced which represent disparate customers of hybrid cars. These profiles provide rankings, or priorities, which are used to establish a baseline of possible user entry. A hierarchical decision model (HDM) ...
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Performance, emission and combustion characteristics of DI diesel engine running on blends of calophyllum inophyllum linn oil (honne oil)/diesel fuel/kerosene
Kerosene (K)/diesel fuel (D)/honne oil (H) blends have a potential to improve the performance and emissions and to be alternatives to neat diesel fuel (ND) and has not been reported in the literature. Experiments have been conducted on DI diesel engine when fuelled with ND, H10 (10%H + 90%D, by volume) to H30, HK10 (10%H + 45%K + 45%D), HK20 (20%H + 40%K + 40%D) and HK30 (30%H + 35%K + 35%D). The ...
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