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Energies
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Recent Advances in Renewable Energy
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Recent Advances in Renewable Energy

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

Deadline for manuscript submissions: closed (5 May 2023) | Viewed by 8847

Special Issue Editors

Dr. Armita Hamidi

E-Mail Website
Guest Editor
David L. Hirschfeld Department of Engineering, Angelo State University, Texas Tech University System, ASU Station, San Angelo, TX 76909-1056, USA
Interests: biorobotic system manufacturing; design and optimization of energy systems; sustainable energy; solar energy technologies
Dr. Sarvenaz Sobhansarbandi

E-Mail Website
Guest Editor
Department of Mechanical Engineering, College of Engineering and Computer Science, California State University, Sacramento, CA 95819, USA
Interests: renewable energy; solar energy; computational fluid dynamics; thermal energy storage; thermal management systems
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Renewable energy is framed as the key solution to the global energy crisis and climate change challenge. Despite diverse technologies and resources of renewable forms of energy, many renewable and alternative forms of energy supply are still at the stage of research and development. There is no doubt that the ultimate size of renewable energy resources is large and could, in principle, make a very substantial contribution to world energy demands. However, technological barriers, high initial investment, and intermittency challenges hinder the large-scale deployment of these technologies. Technological advancements in renewable energy generation, conversion, storage, and management can make these resources reliable sources of energy that can make significant contributions to world energy supplies. Technological advancements can include resource assessments and deployment, materials performance improvement, system optimization and sizing, instrumentation and control, and the modeling and simulation of energy systems. This Special Issue, therefore, focuses on bringing together the recent developments in technological advances of renewable energy ,including but not limited to solar energy systems (thermal and photovoltaic), wind energy, hydropower, geothermal energy, bioenergy and hydrogen production, and their impact on the global economy and power capacity. We, therefore, invite papers on innovative technical developments, reviews, case studies, and analytical as well as assessment papers from different disciplines, which are relevant to renewable energy systems and technologies. 

Dr. Armita Hamidi
Dr. Sarvenaz Sobhansarbandi
Guest Editors

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

  • Renewable energy
  • Technological advancement
  • Energy generation
  • Energy conversion
  • Energy storage
  • Energy management
  • Optimization
  • Performance analysis

Published Papers (3 papers)

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Research

20 pages, 7439 KiB  
Article
Mathematical Modeling and Simulation of a Compound Parabolic Concentrators Collector with an Absorber Tube
by Habib Shoeibi, Azad Jarrahian, Mehdi Mehrpooya, Ehsanolah Assaerh, Mohsen Izadi and Fathollah Pourfayaz
Energies 2023, 16(1), 287; https://0-doi-org.brum.beds.ac.uk/10.3390/en16010287 - 27 Dec 2022
Cited by 3 | Viewed by 2846
Abstract
CPC solar collectors are a combination of new technologies that make it possible to generate heat from radiant solar energy by transferring heat between the absorber and the fluid. This study was performed based on heat transfer equations by proposing a mathematical model, [...] Read more.
CPC solar collectors are a combination of new technologies that make it possible to generate heat from radiant solar energy by transferring heat between the absorber and the fluid. This study was performed based on heat transfer equations by proposing a mathematical model, as reported in the literature. A compound parabolic concentrators solar collector (CPC) numerical model was simulated and coded in Aspen HYSYS and MATLAB software and validated by comparing its results with other researchers and experimental results. The simulated mathematical model includes a two-dimensional numerical model to describe the thermal and dynamic behavior of the fluid inside the CPC solar collector absorber tube. Numerical simulations of the fluid flow equations inside the CPC solar collector absorber tube, along with the energy equation for the absorber tube wall, coating, insulation and reflector, and solar collector heat analysis, were performed repeatedly in MATLAB and Aspen HYSYS software. This method is the most appropriate and reliable method for solving equations for numerical convergence. The experimental results of the parabolic concentrated solar collector (CPC) were used to evaluate and validate the numerical model. A solar compound parabolic concentrators collector (CPC) with short reflectors was used. This collector includes a cylindrical absorber with a real density ratio of 1.8, a reception angle of 22 degrees and a length of 2.81 m, a width of 0.32 m, and an opening of 0.1764 m. Analysis and uncertainty of the proposed model were performed with the measured sample. In the thermal efficiency analysis, the average deviation of the model from the experimental results of other researchers was equal to 7%, for increasing the temperature by 9 °C. According to these results, a good correlation between numerical results and experimental results for this proposed model has been obtained. Full article
(This article belongs to the Special Issue Recent Advances in Renewable Energy)
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25 pages, 5130 KiB  
Article
System Profit Improvement of a Thermal–Wind–CAES Hybrid System Considering Imbalance Cost in the Electricity Market
by Mitul Ranjan Chakraborty, Subhojit Dawn, Pradip Kumar Saha, Jayanta Bhusan Basu and Taha Selim Ustun
Energies 2022, 15(24), 9457; https://0-doi-org.brum.beds.ac.uk/10.3390/en15249457 - 13 Dec 2022
Cited by 1 | Viewed by 1259
Abstract
Studying a renewable energy integrated power system’s features is essential, especially for deregulated systems. The unpredictability of renewable sources is the main barrier to integrating renewable energy-producing units with the current electrical grid. Due to its unpredictable nature, integrating wind power into an [...] Read more.
Studying a renewable energy integrated power system’s features is essential, especially for deregulated systems. The unpredictability of renewable sources is the main barrier to integrating renewable energy-producing units with the current electrical grid. Due to its unpredictable nature, integrating wind power into an existing power system requires significant consideration. In a deregulated electricity market, this paper examines the implications of wind farm (WF) integration with CAES on electric losses, voltage profile, generation costs, and system economics. Comparative research was done to determine the impact of wind farm integration on regulated and deregulated environments. Four randomly chosen locations in India were chosen for this investigation, together with real-time information on each location’s real wind speed (RWS) and predicted wind speed (PWS). Surplus charge rates and deficit charge rates were created to assess the imbalance cost arising from the discrepancy between predicted and real wind speeds to calculate the system economics. When the effect of imbalance cost is considered, the daily system profit shows a variation of about 1.9% for the locations under study. Customers are always seeking electricity that is dependable, affordable, and efficient due to the reorganization of the power system. As a result, the system security limit could be exceeded or the system might function dangerously. The final section of this paper presents an economic risk analysis using heuristic algorithms such as sequential quadratic programming (SQP), artificial bee colony algorithms (ABC), and moth flame optimization algorithms (MFO). It also discusses how the CAES is used to correct the deviation of WF integration in the real-time electricity market. Economic risk analysis tools include value-at-risk (VaR) and conditional value-at-risk (CVaR). The entire piece of work was validated using a modified IEEE 30-bus test system. This works shows that with a three-fold increase in wind generation, the risk coefficient values improves by 1%. Full article
(This article belongs to the Special Issue Recent Advances in Renewable Energy)
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20 pages, 1102 KiB  
Article
Modeling, Analysis, Design, and Simulation of a Bidirectional DC-DC Converter with Integrated Snow Removal Functionality for Solar PV Electric Vehicle Charger Applications
by Sandra Aragon-Aviles, Arvind H. Kadam, Tarlochan Sidhu and Sheldon S. Williamson
Energies 2022, 15(8), 2961; https://0-doi-org.brum.beds.ac.uk/10.3390/en15082961 - 18 Apr 2022
Cited by 6 | Viewed by 3745
Abstract
Different factors affect solar photovoltaic (PV) systems by decreasing input energy and reducing the conversion efficiency of the system. One of these factors is the effect of snow cover on PV panels, a subject lacking sufficient academic research. This paper reviews and compares [...] Read more.
Different factors affect solar photovoltaic (PV) systems by decreasing input energy and reducing the conversion efficiency of the system. One of these factors is the effect of snow cover on PV panels, a subject lacking sufficient academic research. This paper reviews and compares current research for snow removal in solar PV modules. Additionally, this paper presents the design, analysis and modelling of a smart heating system for solar PV Electric Vehicle (EV) charging applications. The system is based on a bidirectional DC-DC converter that redirects the grid/EV-battery power into heating of the solar PV modules, thus removing snow cover, as well as providing the function of MPPT when required to charge the EV battery pack. A control scheme for each mode of operation was designed. Subsequently, a performance evaluation by simulating the system under various conditions is presented validating the usefulness of the proposed converter to be used in solar PV systems under extreme winter conditions. Full article
(This article belongs to the Special Issue Recent Advances in Renewable Energy)
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