scholarly journals Analysis of Modern Aviation Fuels: A Review of Environment Effect

2021 ◽  
pp. 93-105
Author(s):  
Sinem Gürkan Aydin A ◽  
Oktay Polat B ◽  
Arzu Ozgen A
Keyword(s):  
Environmental Impact ◽  
Alternative Fuels ◽  
Energy Resources ◽  
Aviation Industry ◽  
Environment Effect ◽  
Environmental Friendliness ◽  
Sustainable Resources ◽  
Transportation Sector ◽  
Alternative Aviation Fuels ◽  
The World

In our developing and changing world, the use of energy resources is becoming important. With the development of the aviation industry all over the world, the need to use more innovative, more sustainable resources emerges. When the demands in the transportation sector from past to present are examined, the transformation in energy resources will be inevitable. As stated, all studies have focused on the energy resources that reduce the environmental impact, sustainability, environmental friendliness, costs and dependence on oil producing states. In this study, the study of aviation fuels from past to present, its production, environmental impact, sustainability and the returns of alternative aviation fuels are discussed in detail. It is concluded that the world's developing and changing aviation sector should switch to sustainable alternative fuels as soon as possible.

scholarly journals Proposed Methodology to Quantify the Amount of Methane Seepage by Understanding the Correlation Between Methane Plumes and Originating Seeps

2021 ◽  
Vol 9 ◽  
Author(s):  
Chiharu Aoyama ◽  
Nidomu Maeda
Keyword(s):  
Environmental Impact ◽  
Target Position ◽  
Energy Resources ◽  
Basic Data ◽  
Methane Seeps ◽  
Remotely Operated Vehicle ◽  
Methane Seepage ◽  
The World ◽  
Backscattering Strength ◽  
The Mean

In recent years, discoveries of methane plumes (also called methane flares) have been reported in various sea areas around the world. Clusters of naturally seeping methane bubbles rising from the seafloor are visualized as methane plumes on the echograms of quantitative echo sounders and multibeam sonars. In order to determine if seeping methane can be used as energy resources and its environmental impact, it is necessary to estimate the amount of naturally seeping methane. From April, 2020, a 3-year project is being conducted in Japan to evaluate the amount of methane seepage from methane plumes. The authors propose the following steps to quantify the amount of methane seepage accurately. First of all, methane plumes in the Exclusive Economic Zone (EEZ) of Japan are mapped out using acoustic devices such as quantitative echo sounders and multibeam sonars. Secondly, methane bubbles of a few millimeters in diameter from methane seeps at seafloor are collected and sampled using a cone-shaped collector with 20 cm in diameter, operated by Remotely Operated Vehicle (ROV). If we can identify the number of seep mouths that form into one single plume, we will be able to quantify the methane seepage from one plume. Based on this result, calibration of the mean backscattering strength and the amount of seeping methane from methane plumes becomes possible and will be applied to the mapped plumes in order to estimate the methane seepage in the EEZ of Japan. Once this calibration is established, it can be applied to the methane plumes observed worldwide, and methane seepage can be quantified simply by acoustic observations of methane plumes. In this study, a method to verify the correlation between methane plumes and methane seeps is introduced, as well as a method to locate methane seeps effectively using the Target Position function of a quantitative echo sounder. The authors intend to use this as the basic data for establishing a method to estimate the amount of methane released from a methane plume by observing the methane plume acoustically.

scholarly journals RESEARCH OF THE POSSIBILITY OF PRODUCTION AND UTILIZATION OF RDF FUEL

2021 ◽  
Vol 4 (27) ◽  
pp. 77-80
Author(s):  
V.M. Voronin ◽  
◽  
F.A. Belonogov ◽  
I.S. Kudasheva ◽  
◽  
...  
Keyword(s):  
Sustainable Development ◽  
Waste Management ◽  
Industrial Waste ◽  
Alternative Fuels ◽  
Energy Resources ◽  
Management Systems ◽  
Government Agencies ◽  
Secondary Material ◽  
The World ◽  
Expert Community

The issues of sustainable development of waste management systems are actively discussed throughout the world both at the level of government agencies and at the lev-el of the scientific and expert community. One of the ways to improve the existing practice of waste management in Russia is the search for ways to involve them in eco-nomic circulation as secondary material and energy resources. The article shows the fea-sibility of using solid municipal and industrial waste for the production of alternative fuels.

Theoretical and Experimental Analysis on Use of Alternative Fuels for Internal Combustion Engines

2014 ◽  
Vol 659 ◽  
pp. 274-279
Author(s):  
Krisztina Uzuneanu ◽  
Burciu Burciu
Keyword(s):  
Alternative Fuels ◽  
Internal Combustion Engines ◽  
Energy Resources ◽  
Combustion Engines ◽  
Spark Ignition Engines ◽  
Modern Culture ◽  
Natural Energy ◽  
World Energy ◽  
The World ◽  
Rape Oil

The drastic decrease in the world energy resources along with the statement that the modern culture and civilization simply cannot exist without energy and therefore, due to its very existence, it is a big energy consumer, has become an axiom. The increasing number of inhabitants on the planet and consequently the increased amount of necessary energy has determined the researchers and scientists to search deeper into other possible sources of natural energy such as: wind, sun, water, geothermal, tides, atom energies. The work presents some characteristics of injection and burning of the rape oil for Diesel engines and the mixtures of ethanol with gasoline for spark ignition engines.

Biodiesel production from non-edible oils: A review

2020 ◽  
pp. 149-159
Author(s):  
Jatinder Kataria ◽  
Saroj Kumar Mohapatra ◽  
Amit Pal
Keyword(s):  
Environmental Impact ◽  
Energy Demand ◽  
Fossil Fuels ◽  
World Wide ◽  
Edible Oils ◽  
Control Measure ◽  
Biodiesel Production ◽  
Pollution Level ◽  
Animal Fats ◽  
The World

The limited fossil reserves, spiraling price and environmental impact due to usage of fossil fuels leads the world wide researchers’ interest in using alternative renewable and environment safe fuels that can meet the energy demand. Biodiesel is an emerging renewable alternative fuel to conventional diesel which can be produced from both edible and non-edible oils, animal fats, algae etc. The society is in dire need of using renewable fuels as an immediate control measure to mitigate the pollution level. In this work an attempt is made to review the requisite and access the capability of the biodiesel in improving the environmental degradation.

World Economic Crisis as a Process of Substitution of Technological Modes

2009 ◽  
pp. 26-38 ◽  
Author(s):  
S. Glaziev
Keyword(s):  
Economic Crisis ◽  
Economic Activity ◽  
Sharp Increase ◽  
Energy Resources ◽  
Long Wave ◽  
The World ◽  
World Economic ◽  
Technological Mode ◽  
World Economic Crisis

The article analyzes fundamental reasons for the world economic crisis in the light of global technological shifts. It proves that it is caused by the substitution of technological modes. It is shown that sharp increase and slump in stock indices and prices for energy resources are typical of the process of technological substitution which occurs regularly according to the rhythm of long-wave fluctuations of the world economic activity. The article rationalizes a package of anti-crisis measures aimed at stimulating the new technological mode. Its structure and role of the locomotive factor of the new long wave of economic growth are revealed.

Demand-side Energy Policy as an Alternative Energy Strategy for Pakistan

1986 ◽  
Vol 25 (4) ◽  
pp. 631-647
Author(s):  
Peter Pintz
Keyword(s):  
Energy Policy ◽  
Alternative Energy ◽  
High Growth ◽  
Energy Resources ◽  
Energy Strategy ◽  
General Development ◽  
Foreign Countries ◽  
The World ◽  
New Energy ◽  
Level Of Economic Development

After the first oil-price shock of 1973, a search for new energy policies was started all over the world. Changing one fundamental concept - that relating to the general development of energy supply and consumption - was, however, out of the question. The pre-1973 trend of development was maintained. The energy elasticities did not change. The old forecasts were still held to be valid and were considered now, as earlier, to be the objectives which a successful energy policy had to achieve. This was considered a prerequisite for high growth rates of GNP and improvements in living conditions, and energy consumption was regarded as an indicator of the level of economic development. Therefore, the focus was shifted to an enlargement of the supply of indigenous energy resources as a substitute for imported energy, so that dependence on foreign countries could be minimized.

scholarly journals Experimental investigation on spray characteristics of Jet A-1 and alternative aviation fuels

2021 ◽  
pp. 175682772110101
Author(s):  
Manish Kumar ◽  
Srinibas Karmakar ◽  
Sonu Kumar ◽  
Saptarshi Basu
Keyword(s):  
High Speed ◽  
Alternative Fuels ◽  
Droplet Formation ◽  
Spray Characteristics ◽  
Butyl Butyrate ◽  
Phase Doppler Interferometry ◽  
Alternative Aviation Fuels ◽  
Lower Viscosity ◽  
Fuel Jet ◽  
Atomization Characteristics

Potential alternative fuels that can mitigate environmental pollution from gas turbine engines (due to steep growth in the aviation sector globally) are getting significant attention. Spray behavior plays a significant role in influencing the combustion performance of such alternative fuels. In the present study, spray characteristics of Kerosene-based fuel (Jet A-1) and alternative aviation fuels such as butyl butyrate, butanol, and their blends with Jet A-1 are investigated using an air-blast atomizer under different atomizing air-to-fuel ratios. Phase Doppler Interferometry has been employed to obtain the droplet size and velocity distribution of various fuels. A high-speed shadowgraphy technique has also been adopted to make a comparison of ligament breakup characteristics and droplet formation of these alternative biofuels with that of Jet A-1. An effort is made to understand how the variation in fuel properties (mainly viscosity) influences atomization. Due to the higher viscosity of butanol, the SMD is higher, and the droplet formation seems to be delayed compared to Jet A-1. In contrast, the lower viscosity of butyl butyrate promotes faster droplet formation. The effects of the blending of these biofuels with Jet A-1 on atomization characteristics are also compared with that of Jet A-1.

scholarly journals Anticipatory Non-Green-Phenomena Determination for Designing Eco-Design Products

2021 ◽  
Vol 13 (2) ◽  
pp. 621
Author(s):  
Hsin Rau ◽  
Mary Deanne M. Lagapa ◽  
Po-Hsun Chen
Keyword(s):  
Sustainable Development ◽  
Environmental Impact ◽  
Product Design ◽  
Determination Method ◽  
Washing Machine ◽  
Product Failure ◽  
Design Concepts ◽  
The World ◽  
World Business Council

The number of consumers with green awareness have grown these days and as a result they have turned to purchase eco-friendly products. For this reason, this study aims to propose a method for eco-design based on the anticipatory failure determination method to develop eco-design products. By using eco-design concepts adopted from the World Business Council for Sustainable Development, the process will limit the failures and issues related to environmental impact in product design. The proposed method for eco-design product in this study follows the following procedure. First, we analyze product failure. Second, we propose the determination of the non-green phenomenon of the failure. Thirdly, we integrate the intensified non-green phenomenon to generate non-green hypotheses and fourthly, we eliminate each non-green phenomenon hypothesis by introducing the contradiction matrix of TRIZ for obtaining solutions. Finally, we assess alternative eco-design solutions by evaluation. To verify the practicality of the new procedure, a washing machine is used as an example for illustration.

scholarly journals The Environmental Impact of Transport Activities for Online and In-Store Shopping: A Systematic Literature Review to Identify Relevant Factors for Quantitative Assessments

2021 ◽  
Vol 13 (5) ◽  
pp. 2981
Author(s):  
Susanne Feichtinger ◽  
Manfred Gronalt
Keyword(s):  
Environmental Impact ◽  
Distribution Channel ◽  
Order Effects ◽  
Third Order ◽  
Screening Process ◽  
Environmental Friendliness ◽  
Number Of Factors ◽  
Recommendations For Action ◽  
Behavioural Factors ◽  
Relevant Factors

In the scientific literature, there are numerous studies with different approaches and focuses on assessing the environmental impact of online shopping and shopping in the traditional retail channel. The aim of this work is to analyse scientific studies that quantitatively assess the environmental impact of transport activities in both channels and to extract the factors used for this assessment. A literature search was conducted for the period 2006 to October 2020, with 90 studies shortlisted, of which 15 studies were identified as relevant in a screening process. The analysis showed that a different number of factors is included in the selected studies. Logistics-related and behavioural factors are mostly of similar importance. Third-order effects, such as rebound or complementary effects, are rarely considered. Furthermore, it becomes clear that the results also depend on differences in study design and external factors. This work illustrates the complexity of quantitatively assessing the environmental impact of online and in-store shopping. Caution is advised when deriving recommendations for action from general statements about the environmental friendliness of a distribution channel. The 15 factors found, together with the classification method used, form a solid basis for building new models.

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