scholarly journals THERMODYNAMIC ANALYSIS OF WIND CATCHER WITH COOLING PADS USING SSG REYNOLDS STRESS TURBULENCE MODEL.

2021 ◽  
Author(s):  
Agarwal A ◽  
◽  
Pitso I ◽  
Letsatsi M.T ◽  
◽  
...  
Keyword(s):  
Reynolds Stress ◽  
Turbulence Model ◽  
Energy Requirement ◽  
Renewable Energy Sources ◽  
Thermal Conditions ◽  
Energy Sources ◽  
Cfd Analysis ◽  
Open Design ◽  
Air Inlet ◽  
Environment Sustainability

With increase in energy requirement, the researchers are looking for energy efficient passive ventilation techniques. The current design concept is based on environment sustainability and use of renewable energy sources is preferred over conventional energy sources. The current research investigates the wind catcher design with cooling pads using techniques of Computational Fluid Dynamics. The CAD model of wind catcher is designed using Creo design software and CFD analysis is conducted using ANSYS CFX software. The CFD analysis is directed at different air inlet velocities and SSG Reynolds stress turbulence model under steady state thermal conditions for both side open design and singe side open designs. The cooling pads have successfully reduced temperature up to 1.65 degrees for single side opening and 2.86 degrees for double side opening design. Maximum air flow rate is achieved with higher air inlet velocities for both design types.

scholarly journals Comparative Theoretical Analysis of Biomass and Energy Potentials of Usable Maize and Wheat Stalk Wastes: Example of Sakarya Province

2020 ◽  
Vol 8 (11) ◽  
pp. 2460-2467
Author(s):  
Muhammed Taşova ◽  
İsmail Naneli
Keyword(s):  
Energy Production ◽  
Dry Matter ◽  
Energy Requirement ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Gas Oil ◽  
Energy Potential ◽  
Statistical Institute ◽  
Energy Needs ◽  
Wheat Product

With the increase in the population in the world and in our country, the energy requirement related to consumer demands is constantly increasing. In our country, although wind, sun, etc. energy sources are used in energy production, fuels of fossil origin (coal, natural gas, oil etc.) are used more in energy production. Renewable energy sources, which are alternative due to the decrease in fossil fuel reserves, negative environmental effects and inability to meet the energy needs in the future, come to the fore. In this study, Turkey Statistical Institute (TUIK) according to the 2015-2019 year data, Sakarya at the central and districts in cultivation areas for cultivated of using the amounts of maize and wheat product (da) average waste, dry matter, and volatile dry matter, methane and energy their potential has been determined. As a result of the calculations, it has been determined that the maize sap waste amount has the highest 25695.68 tons of waste and 201197.15 MJ energy potential in Adapazarı district in 2017. Among the wheat stalk wastes, in 2017, Geyve district had the highest 269.95 tons of waste and 2113.72 MJ energy respectively.

scholarly journals Environmental Component Economic Evaluation of the Renewable Energy Sources Life Cycle

2020 ◽  
Vol 161 ◽  
pp. 01010
Author(s):  
E N Sosnina ◽  
O V Masleeva ◽  
E V Kryukov ◽  
N I Erdili
Keyword(s):  
Renewable Energy ◽  
Life Cycle ◽  
Power Plant ◽  
Natural Resources ◽  
Environmental Pollution ◽  
Renewable Energy Sources ◽  
Hydroelectric Station ◽  
Economic Assessment ◽  
Energy Sources ◽  
Environment Sustainability

Traditionally, renewable energy sources (RES) are considered the most environmentally friendly, but only the stage of their operation is evaluated. A method for the integrated assessment of the renewable energy environment sustainability has been proposed, taking into account their entire life cycle - from the extraction of natural resources for the production of a power plant to its utilization. An impact assessment of RES different types on the environment has been carried out in four areas: consumption of natural resources, pollution of water resources, pollution of the soil and pollution of the atmosphere. The comparison of the considered environmental components has been carried out on the basis of an environmental pollution economic assessment at the stages of the RES life cycle. Studies have shown that the life cycle of a solar power plant makes the greatest contribution to environmental pollution, but the mini-hydroelectric station - the smallest.

scholarly journals Anaerobic Digestion of Biomass for production of Biogas: Progress and Advantages

2020 ◽  
Vol 6 (5) ◽  
pp. 108-111
Author(s):  
Kumar Gaurav
Keyword(s):  
Renewable Energy ◽  
Anaerobic Digestion ◽  
Fossil Fuels ◽  
Biogas Production ◽  
Energy Requirement ◽  
Renewable Energy Sources ◽  
Agricultural Waste ◽  
Energy Generation ◽  
Primary Energy ◽  
Energy Sources

A major share of world’s primary energy requirement is dependent on fossil fuels which is not only a non renewable source of energy and on the verge of extinction but also associated with serious environmental concerns. To combat these issues, alternative renewable energy sources are required. Certain examples of renewable energy sources are solar energy, wind energy, hydro and thermal energy, biofuels etc. Biomass is one such alternative which is freely and abundantly available. It is mainly the agricultural waste and vegetable waste which are perishable and create a lot of nuisance. Tapping this biomass for energy production will be beneficial in two ways; it will be an excellent source of energy generation and it will also help in waste management for environment protection. Energy generation from Biomass can take place either chemically or thermo-chemically. In the present paper advantages of anaerobic digestion of biomass are discussed for biogas production.

scholarly journals Renewable Energy Sector in Bangladesh: The Current Scenario, Challenges and the Role of IoT in Building a Smart Distribution Grid

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 5083
Author(s):  
Abdul Hasib Siddique ◽  
Sumaiya Tasnim ◽  
Fahim Shahriyar ◽  
Mehedi Hasan ◽  
Khalid Rashid
Keyword(s):  
Renewable Energy ◽  
Energy Demand ◽  
Energy Requirement ◽  
Economic Status ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Renewable Energy Resources ◽  
Distribution Grid ◽  
Sustainable Solutions ◽  
Smart Distribution Grid

Advancement in electricity is the key ingredient that can actively take part in alleviating poverty and drastically improve the socio-economic status of the people of Bangladesh. The incorporation of renewable energy sources would help the country meet the energy requirement as well as contribute positively towards building a sustainable planet. The paper has extensively discussed the potential aspects of renewable energy resources in Bangladesh and how the Internet of Things can facilitate the implementation of intermittent sources. The regulatory and socio-economic aspects of the renewable energy industry have been explored and sustainable solutions will be discussed to fast-track the process of integrating various renewable energy sources in the power grid to meet the energy demand. The paper discusses the challenges associated with the RE integration in Bangladesh’s power mix and tries to mitigate it through the IoT. Besides that, an RE map for Bangladesh along with prospective power network has also been discussed in this work.

CFD Analysis of 3D Flow for 1.4 MW Francis Turbine and Model Turbine Manufacturing

2015 ◽  
Author(s):  
Ulku Ece Ayli ◽  
Alper Kaplan ◽  
Huseyin Cetinturk ◽  
Berat Kavurmaci ◽  
Gizem Demirel ◽  
...  
Keyword(s):  
Draft Tube ◽  
Guide Vane ◽  
Renewable Energy Sources ◽  
Cost Effective ◽  
Francis Turbine ◽  
Energy Sources ◽  
Cfd Analysis ◽  
3D Flow ◽  
Wide Range ◽  
Spiral Case

Hydroenergy is one of the most useful renewable energy sources. Hydropower is a vital source as it is clean, sustainable and cost effective. Francis type hydroturbines are applicable to a wide range of head and flow rate values. Spiral case, stay vane, guide vane, runner and draft tube are the basic components of a Francis turbine. In this paper, CFD based 3D numerical simulations of steady turbulent flow in a Francis turbine for an actual power plant, BUSKI HES in Turkey, is presented.

scholarly journals Sustainable Jet Fuel Production: Using Pumpkin Seed Oil

TEM Journal ◽  
2021 ◽  
pp. 879-882
Author(s):  
Sinem GÜRKAN AYDIN ◽  
Arzu ÖZGEN
Keyword(s):  
Greenhouse Gas ◽  
Seed Oil ◽  
Renewable Energy Sources ◽  
Jet Fuel ◽  
Energy Sources ◽  
Pumpkin Seed ◽  
Biological Origin ◽  
Important Place ◽  
Pumpkin Seed Oil ◽  
Environment Sustainability

Biofuels are fuels of biological origin, and they are among the prominent energy sources from renewable energy sources in recent years. Unlike fuels such as petroleum derivatives, coal, natural gas, biofuels are renewable and sustainable energy sources. Biofuels can be obtained by thermochemical or biochemical methods from agricultural and forestry products, animal and vegetable residues and wastes, organic origin domestic, industrial and urban wastes. Global warming caused by greenhouse gas effect is today shown as the most important common environmental problem in the world. The most important advantage of using biofuels in environmental terms is that there will be a reduction of greenhouse gas impact and acid rain. In this study, it is aimed to produce and characterize jet fuel by converting from pumpkin (Cucurbita pepo) seed oil, which is a sustainable bio energy source, into biofuel, by transesterification method. It has an important place in matters such as environment, sustainability, and reduction of carbon emissions. Biojet fuel produced using pumpkin seed oil, which is a sustainable resource, is a candidate product for development and commercialization.

Yttria Nettings by Replica Processing

2014 ◽  
Vol 798-799 ◽  
pp. 687-690 ◽  
Author(s):  
Silas Cardoso Santos ◽  
C. Yamagata ◽  
W. Acchar ◽  
S.R.H. Mello-Castanho
Keyword(s):  
Renewable Energy ◽  
United Nations ◽  
Immersion Time ◽  
Renewable Energy Sources ◽  
Thermal Conditions ◽  
Porous Ceramics ◽  
Green Economy ◽  
Energy Sources ◽  
Strategic Direction ◽  
Unique Mechanism

In the context of green economy supported and widespread by United Nations (UN), the renewable energy sources are the unique mechanism to universalize the access to energy. Face to this strategic direction of change is essential to develop efficient components for saving energy such as porous ceramics that associate light with mechanical strength. Thus, the objective of this work concerns to improve the homogeneity of porous size distribution of yttria porous ceramics by evaluating their morphology during replica processing. Samples were subject to immersion into 30vol% yttria aqueous suspensions during an interval from 1min to 120min and sintered through careful thermal conditions. Based on the results, the weight and morphology of porous structure samples were directly influenced by immersion time, whereby intervals from 30-120min showed the best final products.

Renewable Energy Sources

IEE Review ◽  
1991 ◽  
Vol 37 (4) ◽  
pp. 152
Author(s):  
Kenneth Spring
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Energy Sources
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