Special Issue "Selected Papers from the International Conference on Innovative Applied Energy (IAPE’20)"

A special issue of Entropy (ISSN 1099-4300).

Deadline for manuscript submissions: closed (15 December 2020).

Special Issue Editors

Prof. Dr. Xiomar Gómez
Website
Guest Editor
Chemical and Environmental Bioprocess Engineering Group, Natural Resources Institute (IRENA), University of Leon, Av. de Portugal 41, 24009 Leon, Spain
Interests: biogas waste; solid waste management; methane production; waste utilization; Water and wastewater treatment; wastewater engineering
Dr. Khian-Hooi Chew

Guest Editor
Department of Physics, University of Malaya, 50603 Kuala Lumpur, Malaysia
Interests: surface and interface and thin films (heterostructures; superlattices; nanostructures); statistical physics and thermodynamics (mean-field theory; Landau–Ginzburg theory; statistical mechanics); electronic, electrical, magnetic, and optical properties (ferroics; multiferroics; ferroelectrics; piezoelectrics; phase transitions; domain structures)

Special Issue Information

Dear Colleagues,

Energy resource consumption has doubled since the beginning of the century, bringing with it a growth in demand associated with the fast development in the industrial and telecommunication sectors. To respond to this rising demand for energy resources, new efficient infrastructures for production, storage, transport, and use of energy are necessary. The Second Edition of the International Conference on Innovative Applied Energy (IAPE’20) aims to investigate innovative applications and to gather the latest research in the areas of energy materials, energy production, alternative and renewable energy supply, energy savings analysis, optimization of energy processes, and the environmental impacts of energy production.

This year, the IAPE Annual Conference will be held on 15–16 September, 2020, in Cambridge, United Kingdom, and is supported by the Entropy journal. Entropy is an international journal dealing with the development and/or application of entropy or information–theoretic concepts in a wide variety of applications (for more details, see https://www.mdpi.com/journal/entropy/about). Thus, this Special Issue will collect the most relevant papers dealing with entropy and information-theory-based applications presented in this conference.

Hence, we encourage the authors who will present an article at IAPE’20 and who feel that their contribution is within the scope of interest of the journal Entropy. Selected authors will be asked to submit an original extension of their IAPE paper to be considered for publication no later than 15 December. More details can be found at https://www.mdpi.com/journal/entropy/instructions#preparation. Accepted papers, after a normal process of peer-review by experts in the field of applied energy, will be published in Entropy.

Prof. Dr. Xiomar Gómez
Dr. Khian-Hooi Chew
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 papers will be 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. Entropy is an international peer-reviewed open access monthly 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 1800 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

  • Distributed energy systems
  • Hybrid energy systems
  • Intelligent and renewable energy systems
  • Energy system and efficiency improvement
  • Recycling-based energy systems
  • Efficient bio-energy systems
  • Energy-based integrated system
  • Cloud computing for energy-efficient systems
  • Urban energy systems
  • Energy conversion systems
  • Advanced energy regeneration systems
  • Hydrogen energy production
  • Energy management, policy, and economics
  • Sustainable energy
  • Fuel cells, biomass, and biofuels
  • Safety and security
  • Energy and law
  • Multigeneration systems
  • Exergetic and exergoeconomic analyses
  • Smart energy systems for Industry 4.0
  • Internet of Things for the smart energy industry
  • Efficient energy technologies
  • Clean energy conversion technologies
  • Power generation technologies
  • Energy storage technologies
  • Mitigation technologies
  • Energy-aware design for sustainable 5G networks
  • Solar energy materials
  • Smart grids
  • Artificial Intelligence for energy efficiency
  • Renewable energy for 5G networks
  • Information systems for sustainable energy
  • Edge energy recovery techniques
  • Energy and smart buildings
  • Big Data and analytics for energy efficiency
  • Industry 4.0 for clean energy
  • Energy transition and strategies
  • Advanced energy technologies (applications and surveys)
  • Smart technologies for seasonal thermal energy
  • Applied energy for smart agriculture
  • 5G Networking for smart grids
  • Energy economics and financing energy projects
  • Smart energy systems based on the Internet of Things
  • Passive solar buildings
  • Advanced electric vehicle applications
  • Energy resource technologies (bioenergy, geothermal,hydrogen, hydropower, ocean, solar, and wind)

Published Papers (2 papers)

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Open AccessArticle
Biosynthesized Silica Nanosuspension as Thermal Fluid in Parabolic Solar Panels
Entropy 2021, 23(2), 142; https://doi.org/10.3390/e23020142 - 25 Jan 2021
Abstract
In this work, the production of biologically synthesized silica nanoparticles was proposed to prepare a nanosuspension as a thermal fluid in parabolic solar panels at the laboratory level. Silica nanoparticles were produced from construction sand in two stages. Biosynthesis broth was produced by [...] Read more.
In this work, the production of biologically synthesized silica nanoparticles was proposed to prepare a nanosuspension as a thermal fluid in parabolic solar panels at the laboratory level. Silica nanoparticles were produced from construction sand in two stages. Biosynthesis broth was produced by Aspergillus niger aerated fermentation in a 1 L bioreactor for 9 days. Each supernatant was contacted with 18% construction sand in a 500 L reactor with mechanical agitation, at a temperature of 25 °C, and a contact time of 30 min. Subsequently, the separation process was carried out. For day 9, a pH value of 1.71 was obtained as well as acid concentrations of 15.78 g/L for citrus and 4.16 g/L for malic. The metal extraction efficiency of Si nanoparticles was 19%. The vibration peaks in the FTIR were characteristic of the presence of silica nanoparticles in wavenumbers 1020 cm−1 and 1150 cm−1. Finally, a prototype solar radiation test bench for parabolic systems was built and provided with a radiation source that falls on a translucent pipe that transports the nanoparticles, which has a pump and a series of thermocouples. The heat capacity of the biotechnologically produced silica nanoparticle suspension was 0.72 ± 0.05 kJ/kgK, using material and energy balances in the flow circuit. Full article
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Review

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Open AccessReview
Anaerobic Digestion for Producing Renewable Energy—The Evolution of This Technology in a New Uncertain Scenario
Entropy 2021, 23(2), 145; https://doi.org/10.3390/e23020145 - 25 Jan 2021
Abstract
Anaerobic digestion is a well-known technology with wide application in the treatment of high-strength organic wastes. The economic feasibility of this type of installation is usually attained thanks to the availability of fiscal incentives. In this review, an analysis of the different factors [...] Read more.
Anaerobic digestion is a well-known technology with wide application in the treatment of high-strength organic wastes. The economic feasibility of this type of installation is usually attained thanks to the availability of fiscal incentives. In this review, an analysis of the different factors associated with this biological treatment and a description of alternatives available in literature for increasing performance of the process were provided. The possible integration of this process into a biorefinery as a way for producing energy and chemical products from the conversion of wastes and biomass also analyzed. The future outlook of anaerobic digestion will be closely linked to circular economy principles. Therefore, this technology should be properly integrated into any production system where energy can be recovered from organics. Digestion can play a major role in any transformation process where by-products need further stabilization or it can be the central core of any waste treatment process, modifying the current scheme by a concatenation of several activities with the aim of increasing the efficiency of the conversion. Thus, current plants dedicated to the treatment of wastewaters, animal manures, or food wastes can become specialized centers for producing bio-energy and green chemicals. However, high installation costs, feedstock dispersion and market distortions were recognized as the main parameters negatively affecting these alternatives. Full article
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