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Advanced Studies in Clean and Green Energy Technologies
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Advanced Studies in Clean and Green Energy Technologies

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "B2: Clean Energy".

Deadline for manuscript submissions: closed (10 July 2023) | Viewed by 5377

Special Issue Editor

Dr. Muhammad Shakeel Ahmad

E-Mail Website
Guest Editor
Higher Institution Centre of Excellence (HICoE), UM Power Energy Dedicated Advanced Centre (UMPEDAC), Level 4, Wisma R&D, University of Malaya, Jalan Pantai Baharu, Kuala Lumpur 59990, Malaysia
Interests: hydrogen technologies; solar photovoltaics; green energy technologies

Special Issue Information

Dear Colleagues,

The ever energy-hungry human civilization, industrial modernization, and our inability to harness energy to use fossil fuels efficiently pose significant risks of damage to global climatic conditions. Recent climatic disasters in the form of heatwaves, droughts, flash floods, and extreme weather are warnings to global society to take decisive and concrete steps to mitigate climate-related challenges. In this regard, a steady and economically feasible shift from a fossil fuel-based economy to a renewable energy-based and/or clean energy-based economy has been deemed a highly anticipated solution to effectively fight against climate change.

By definition, renewables may cover energy generation from solar, wind, geothermal, tidal energy, sources, etc.; energy storage in the form of electricity, heat, and/or chemicals; and economic distribution. On the other hand, clean energy technologies may encircle clean fossil fuel burning such as gasification, pyrolysis, etc.

This Special Issue focuses on the advances in clean and green energy technologies that may have the potential to pave the way for an economically feasible shift to a carbon-negative or at least carbon-neutral economy. The current Special Issue will largely be based on renewable and clean energy technologies in various sectors such as power, transport, chemical industry, etc., under the total primary energy mix. The issue invites eminent research articles, review papers, and viewpoints that are focused on clean and green energy technologies as well as policy roadmaps.

Dr. Muhammad Shakeel Ahmad
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • efficient energy generation
  • energy storage
  • renewable energy
  • clean burning

Published Papers (3 papers)

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Research

20 pages, 6312 KiB  
Article
Effect of Various Dusts and Humidity on the Performance of Renewable Energy Modules
by Anis Ahmad Sher, Naseem Ahmad, Mariyam Sattar, Usman Ghafoor and Umer Hameed Shah
Energies 2023, 16(13), 4857; https://0-doi-org.brum.beds.ac.uk/10.3390/en16134857 - 21 Jun 2023
Cited by 5 | Viewed by 1477
Abstract
Due to the depletion of fossil fuels, cost-effective and efficient alternate energy resources are a major topic of research nowadays. Solar energy is one of the renewable energy sources which is under research. The main emphasis is on developing new technologies for harnessing [...] Read more.
Due to the depletion of fossil fuels, cost-effective and efficient alternate energy resources are a major topic of research nowadays. Solar energy is one of the renewable energy sources which is under research. The main emphasis is on developing new technologies for harnessing the sun’s energy efficiently. Solar photovoltaic (PV) cells are one such technology that works on the principle of the photovoltaic effect, with the electric output generated by it being directly influenced by the amount of light reaching the surface of the cell. Identification of those parameters, which act as an obstacle between light and the solar cell surface and decrease the efficiency of the cell drastically, is necessary. This research study focuses on the environmental parameters (dust and humidity) that directly influence PV cell performance. Here, experiments were conducted by using different types of dusts (sand, soil, ash) of varying quantities and then finding their effect on PV cell output. The results clearly indicate an adverse effect of quantity of dust on performance of the solar PV cell. Moreover, the relative humidity effect on the PV cell performance was also checked, which shows significant change in efficiency for high relative humidity. Full article
(This article belongs to the Special Issue Advanced Studies in Clean and Green Energy Technologies)
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20 pages, 4687 KiB  
Article
Simulation Analysis of Novel Integrated LNG Regasification-Organic Rankine Cycle and Anti-Sublimation Process to Generate Clean Energy
by Saadat Ullah Khan Suri, Muhammad Khaliq Majeed and Muhammad Shakeel Ahmad
Energies 2023, 16(6), 2824; https://0-doi-org.brum.beds.ac.uk/10.3390/en16062824 - 18 Mar 2023
Viewed by 1873
Abstract
Recently, the depletion of fossil fuel reserves and the harmful environmental effects caused by burning fossil fuels have signified the supreme importance of utilizing sustainable energy reserves such as geothermal and solar energies. The advancement of the Organic Rankine Cycle as a clean [...] Read more.
Recently, the depletion of fossil fuel reserves and the harmful environmental effects caused by burning fossil fuels have signified the supreme importance of utilizing sustainable energy reserves such as geothermal and solar energies. The advancement of the Organic Rankine Cycle as a clean energy generation path by researchers has gained momentous demand for its commercialization. The sole Organic Rankine Cycle can produce a large amount of energy in contrast to other power production cycles. To make this clean energy recovery sustainable, liquefied natural gas cold energy can be utilized through regasification to integrate the Organic Rankine Cycle with the anti-sublimation carbon dioxide capture process, merging the biogas setup. Liquefied natural gas cold energy recovery has paramount importance with aspects of energy economy and environment preservation. Liquefied natural gas regasification in shell and tube heat exchangers poses a minimal freezing risk and is high duty. Anti-sublimation of biogas is an energy-intensive process. It can be materialized from liquefied natural gas cold energy implementation through the Organic Rankine Cycle by maintaining cryogenic temperatures there. In this situation, greenhouse gas emissions can be minimized. The simulation analysis is performed based on thermodynamic and techno-economic assessments of the poly-generation energy systems. It is proved to be useful in conducting by regulating different working fluids. The optimum electric power generated is 2492 MW. While the optimum net present value, energy efficiency, and exergy efficiency of this proposed energy system are 19.5, 57.13%, and 76.20%, respectively. The governmental authorities and environmental protection can benefit from this scientific research work to create an environmentally friendly atmosphere and energy for contemporary society. Full article
(This article belongs to the Special Issue Advanced Studies in Clean and Green Energy Technologies)
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11 pages, 2896 KiB  
Article
Numerical Simulation of Transient Combustion and the Acoustic Environment of Obstacle Vortex-Driven Flow
by Afaque Ahmed Bhutto, Khanji Harijan, Mukkarum Hussain, Syed Feroz Shah and Laveet Kumar
Energies 2022, 15(16), 6079; https://0-doi-org.brum.beds.ac.uk/10.3390/en15166079 - 22 Aug 2022
Cited by 9 | Viewed by 1385
Abstract
Solid fuel combustion in a chamber does not necessarily occur at a constant rate and may show fluctuations due to variables such as varying burning rates, chamber pressure, and residual combustion. These variables can cause the fuel to burn disproportionately. The acoustic environment [...] Read more.
Solid fuel combustion in a chamber does not necessarily occur at a constant rate and may show fluctuations due to variables such as varying burning rates, chamber pressure, and residual combustion. These variables can cause the fuel to burn disproportionately. The acoustic environment of obstacle vortex-driven flow due to transient combustion with pressure oscillations in a solid fuel chamber is numerically investigated in the present study. Solid fuel combustion is considered transient, and flow characteristics of the present problem are governed by large eddies shed from an obstacle. Since unsteady Reynolds-averaged Navier-Stokes (URANS) simulations are not appropriate to compute the present flow phenomenon, therefore, a detached eddy simulation (DES) is performed to precisely predict the flow behavior. Simulation of steady-state combustion is carried out to validate the numerical results with available experimental data from the literature. The simulation of transient combustion shows that if the combustion frequency is close to the chamber’s modal frequency of the chamber, its amplitude increases greatly and creates an acute acoustic environment. This will result in fuel savings. The amplitude of pressure oscillation up to 18% and 5% of mean pressure are evident at the first and second mode of forced oscillation frequencies respectively. Interestingly, it is also found that pressure oscillation always occurs at inlet mass flux disturbance frequency and not between the disturbance and natural frequency of the chamber. As a result, it is evident that the combustion process or chamber configuration could be modified to ensure that both frequencies are far away enough to interact and create both a harsh acoustic environment and sufficient fuel to burn disproportionately. Full article
(This article belongs to the Special Issue Advanced Studies in Clean and Green Energy Technologies)
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