scholarly journals Design and fabrication of a prototype solar tapping device

2018 ◽  
Vol 64 ◽  
pp. 02006
Author(s):  
Anirudh N. Kulkarni ◽  
B. Arjun Bhat ◽  
Chinmay D. Sastry ◽  
K. S. Sridhar
Keyword(s):  
Energy Efficiency ◽  
Conversion Rate ◽  
Fossil Fuel ◽  
Photovoltaic Cells ◽  
Clean Energy ◽  
Fresnel Lens ◽  
Energy Sources ◽  
Negative Effects ◽  
Natural Lighting ◽  
Reduced Costs

Fossil fuel based energy sources are most commonly used because of the ease of availability and affordability, but have many long lasting negative effects, due to which a shift must be made to renewable and clean energy sources such as solar energy. Efficiency of the photovoltaic cells have increased by 1% every ten months, resulting in reduced costs and increased number of users. The project will explore the design and fabrication of an improved and efficient solar tapping device. An effort will be made to incorporate an architectural concept called “barrel vault” that is primarily used for natural lighting, over a Fresnel lens plate setup to act as a collector. The tracking mechanism incorporated is unique and can be modified to either have single axis or dual axis tracking depending on the requirements. Keeping in mind the environment and cost, an attempt has been made to fabricate the product with higher energy conversion rate, at an affordable cost using the above techniques. Upon analysing the results, the conclusion could be drawn that there was an increase in conversion rate of up to twice the traditional setup.

scholarly journals Solar Energy Use in Dryers as an Alternative Energy Source in Agriculture

2010 ◽  
Vol 67 (1) ◽  
Author(s):  
Mirela MILITARU ◽  
Elena POSTELNICU ◽  
Mihai CHIŢOIU ◽  
Valentin VLĂDUŢ
Keyword(s):  
Energy Source ◽  
Solar Energy ◽  
Alternative Energy ◽  
Energy Use ◽  
Clean Energy ◽  
Energy Sources ◽  
Negative Effects ◽  
Alternative Energy Source ◽  
Different Types ◽  
Clean Energy Source

Solar energy represents one of the future energy sources with a high potential, used as an alternative to conventional methods, especially during summer. The advantages of using solar energy are multiple, this type of energy being virtually endless and free, and its use has no negative effects on the environment, being regarded as a clean energy source. Solar energy has multiple applications in agriculture, one of its benefits being that it is used for dryers as an alternative energy source, especially in regions with a high solar potential. In this paper different types of fruits and vegetable dryers, nationally and abroad are presented, as well as results obtained from different methods of solar dryers.

scholarly journals Increased Fossil Fuel Consumption and Its Impact on Energy Efficiency and Economic Growth

2022 ◽  
Vol 11 (1) ◽  
pp. 188
Author(s):  
Kehinde Damilola Ilesanmi ◽  
Devi Datt Tewari
Keyword(s):  
Climate Change ◽  
Economic Growth ◽  
Energy Efficiency ◽  
Energy Consumption ◽  
Energy Security ◽  
Climate Change Mitigation ◽  
Fossil Fuel ◽  
Clean Energy ◽  
Policy Makers ◽  
Change Mitigation

Energy efficiency improvement is believed to be an effective means of reducing energy consumption thereby reducing green-house gas emission and as well promoting sustainable economic development. Therefore, ascertaining the energy efficiency level will guide policy makers on the right kind policy intervention that will guarantee energy security, climate change mitigation and sustainable growth and development. The study employed a multivariate regression technique to estimation of the impact of a change in the energy structure on aggregate energy efficiency and economic growth. It was revealed in the study that, though an increase usage of fossil fuel is an important factor input for economic growth, however, it is inimical to the efforts aimed at combating climate change. The study also revealed that the marginal efficiency of the energy inputs is important for ensuring increased output as well as sustainable energy supply. Energy efficiency was seen as a mechanism for improving optimal energy utilization. Therefore, improving the level of energy efficiency will significantly assist in providing clean energy coupled with achieving sustainable development goals. This will benefit the nation in terms of ensuring energy security together with climate change mitigation. Policy makers should also focus more on investing in energy efficiency promoting technologies in order to reduce the per capita energy consumption without compromising the economic output level.   Received: 16 June 2021 / Accepted: 7 November 2021 / Published: 3 January 2022

scholarly journals Study on the energy overview of the industrial beverage sector in Colombia

2021 ◽  
Vol 10 (7) ◽  
pp. 357-371
Author(s):  
Jhan Piero Rojas ◽  
Mawency Vergel ◽  
Martha Sofia Orjuela Abril
Keyword(s):  
Energy Efficiency ◽  
Energy Consumption ◽  
Latin American ◽  
Electric Energy ◽  
Clean Energy ◽  
Industrial Sector ◽  
Energy Sources ◽  
Improve Energy Efficiency ◽  
Latin American Region ◽  
Polluting Emissions

In the Latin American region, the issues of efficiency in energy consumption and clean energy sources become more important every day, and worldwide, these issues are of great importance because a progressive change in the use of energy is required for reasons such as climate change, polluting emissions and forecasting of a shortage of fossil or non-renewable fuel reserves. The Colombian government is no stranger to these issues, and since 2001, energy efficiency plans have been implemented, creating a nationwide program for the proper use of energy sources that seeks, through analysis of the national energy landscape, the implementation of technical and technological actions that improve energy efficiency in all sectors of the country. This paper shows the study made to the industry of (number of companies) in the beverage sector, which characterized the use of different types of energy such as natural gas and electric energy and the transformation of these in their processes of production, which seeks to determine how efficiently the potential of energy resources is used. Only in the energy consumption for lighting were savings potentials of up to 50% detected. It is also shown how, through legislation and studies conducted under the direction of the Energy Mining Planning Unit, the aim is to have a more competitive industrial sector against international markets, specifically taking the industrial sector of beverage production as a sample.

scholarly journals Environmental Assessment of Energy Scenarios for a Low-Carbon Electrical Network in Chile

2019 ◽  
Vol 11 (18) ◽  
pp. 5066 ◽  
Author(s):  
Ivan Merino ◽  
Israel Herrera ◽  
Hugo Valdés
Keyword(s):  
Global Warming ◽  
Renewable Energy ◽  
Fossil Fuel ◽  
Clean Energy ◽  
Electrical Network ◽  
Energy Sources ◽  
Low Carbon ◽  
Energy Demands ◽  
Near Future

Nowadays, establishing clean energy sources is an undeniable need for all territories to reconcile energy and competitiveness objectives with those of security and sustainability. This article shows the main advantages of implementing clean energy sources in the long-term Chilean electrical network. The clean energy considered in this work is based on Renewable Energy (Conventional and Non-Conventional) with the backup of gas or nuclear. Thus, four scenarios are proposed and were simulated for the year 2050, the year assumed for the decommissioning of all coal plants in the country. These scenarios contemplate a high or low penetration of Renewable Energy. Additionally, a reference and realistic scenario for the year 2018 has also been considered to compare to the clean scenarios proposed. The results obtained coincide with the goals of reducing environmental impacts such as global warming emissions and fossil fuel dependence. However, the backup that was chosen for supporting the intermittence of renewable energy may have an important role in the main system considering the expected growth of energy demands in the near future.

Fire

2020 ◽  
pp. 178-234
Author(s):  
John Evans
Keyword(s):  
Fuel Cells ◽  
Greenhouse Gases ◽  
Synthesis Gas ◽  
Nuclear Power ◽  
Fossil Fuel ◽  
Photovoltaic Cells ◽  
Electrochemical Methods ◽  
Energy Sources ◽  
Secondary Energy ◽  
Green Fuel

Approaches towards substituting fossil fuel sources of their products, energy and petrochemicals are elaborated. Synthesis gas (CO/H2) provides an intermediate for reconverting waste (from plastics and biomass) as well as carbon fuels into petrochemicals from methanol to petrol to waxes. Energy sources such as nuclear power and photovoltaic cells are explained. Modes of forming hydrogen and avoiding the release of greenhouse gases to afford a green fuel are explained. Electrochemical methods provide secondary energy sources are alternatives are compared: e.g. by powering transport using fuel cells or batteries. The demands of these technologies on the supplies of key elements like lithium and cobalt are discussed to understand whether developments may or may not be sustainable.

scholarly journals Energy mix, technological change, and the environment

2021 ◽  
Author(s):  
Anelí Bongers
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Alternative Energy ◽  
Fossil Fuel ◽  
Renewable Energy Sources ◽  
Rebound Effect ◽  
Clean Energy ◽  
Pollutant Emissions ◽  
Energy Sources ◽  
Energy Mix

AbstractThis paper studies the relationship between the energy mix and the environment using a theoretical framework in which two alternative energy sources are considered: fossil fuels (dirty energy) and renewable energy (clean energy). We find that a positive aggregate productivity shock increases energy consumption and emissions but reduces energy intensity and emissions per unit of output as renewable energy consumption increases, that is, carbon emissions are procyclical but emissions per unit of output are countercyclical. Second, an energy efficiency improvement provokes a “rebound effect” above 100% (the backfire effect), resulting in a rise of pollutant emissions by increasing energy use. Third, a technological improvement in emissions leads to a reduction in emissions per unit of fossil fuel, but also implies a slow-down in the adoption of renewable energy sources. Finally, we consider the case of a decentralized economy in which the government chooses an optimal specific tax on fossil fuel to maximize social welfare. We show that the “second-best” policy is highly effective in correcting the negative effects of the environmental externality and able to almost achive the centralized economy outcome.

scholarly journals DIRTY AND CLEAN TECHNOLOGIES

2015 ◽  
Vol 47 (1) ◽  
pp. 123-145 ◽  
Author(s):  
SUPRATIM DAS GUPTA
Keyword(s):  
Steady State ◽  
Adverse Effects ◽  
Environmental Quality ◽  
Natural Resource ◽  
Fossil Fuel ◽  
Optimal Solution ◽  
Clean Energy ◽  
Energy Sources ◽  
Worker Productivity ◽  
Alternative Technologies

AbstractPollution from fossil fuel use is a global problem. Studies have shown that a worsening of environmental quality has adverse effects on worker productivity and health. In this study, there is an inexhaustible natural resource that deteriorates environmental quality and affects productivity. There also exists a perfect substitute clean backstop, which is initially too costly to operate and whose costs can be reduced through investments in knowledge. Depending on the endowment of environmental quality, the optimal solution shows that the planner should only use the resource or only the backstop until a constant steady state is reached in which the polluting resource and backstop are used in fixed proportions. We show that investments in alternative technologies from the very beginning can help an economy make the eventual switch to clean energy sources, thereby attaining better environmental quality.

Power Projects and Covid-19: A Practical Analysis of the Relevance of Force Majeure Clauses under the Standardised Power Purchase and Implementation Agreements of Uganda

2020 ◽  
Vol 1 (2) ◽  
pp. 189-193
Author(s):  
Aisha Naiga ◽  
Loyola Rwabose Karobwa
Keyword(s):  
Renewable Energy ◽  
Renewable Energy Sources ◽  
Clean Energy ◽  
The State ◽  
Energy Sources ◽  
Policy Goals ◽  
Force Majeure ◽  
Practical Analysis ◽  
Energy Justice

Over 90% of Uganda's power is generated from renewable sources. Standardised Implementation Agreements and Power Purchase Agreements create a long-term relationship between Generating Companies and the state-owned off-taker guaranteed by Government. The COVID-19 pandemic and measures to curb the spread of the virus have triggered the scrutiny and application of force majeure (FM) clauses in these agreements. This article reviews the FM clauses and considers their relevance. The authors submit that FM clauses are a useful commercial tool for achieving energy justice by ensuring the continuity of the project, despite the dire effects of the pandemic. Proposals are made for practical considerations for a post-COVID-19 future which provides the continued pursuit of policy goals of promoting renewable energy sources and increasing access to clean energy, thus accelerating just energy transitions.

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