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Energies
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Green Energy Harvesting Devices & Technologies
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Green Energy Harvesting Devices & Technologies

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

Deadline for manuscript submissions: closed (30 November 2021) | Viewed by 5366

Special Issue Editor

Dr. Vimal Viswanathan

E-Mail Website
Guest Editor
Mechanical Engineering Department, San Jose State University, San Jose, CA, USA
Interests: product development; design optimization; green energy harvesting devices; design of assistive technologies & engineering education

Special Issue Information

Dear Colleagues,

The concept of “green energy” has been very popular in recent times as we are looking for a sustainable and cleaner supply of energy for a growing world population. There are several forms of green energy resources including wind, tidal, solar, biomass and geothermal energies. Harvesting these energy forms efficiently is a crucial factor to meet the growing energy demands of the world. With the advancement of technology, scaling of green energy harvesting devices has also been made possible; e.g., solar energy harvesting devices include large solar power plants to small solar-powered lights for non-commercial use. Given the large number of special issues related to green energy, this special issue focuses on devices and technologies that a consumer can use to harvest energy for their day-to-day activities. Papers related to the design, simulation, fabrication and testing of such devices and technologies will be a good fit for this special issue. This special issue welcomes both theoretical and experimental works related to green energy harvesting with the consumer market in mind.

Topics of special interest include:

  • New methods, materials and tools for green energy harvesting
  • Design and characterization of green energy harvesting devices
  • Development of new technologies for green energy harvesting
  • Efficiency improvement on existing devices
  • Biomass energy harvesting
  • Human energy harvesting
  • Rain energy harvesting
  • Redesign/scaling of existing systems to meet the consumer market
  • Tidal energy harvesting

Dr. Vimal Viswanathan
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

  • Green energy
  • Solar energy
  • Wind energy
  • Tidal energy
  • Geothermal energy
  • Human energy
  • Energy harvesting

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Published Papers (2 papers)

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Research

14 pages, 3464 KiB  
Article
Spatial Succession for Degradation of Solid Multicomponent Food Waste and Purification of Toxic Leachate with the Obtaining of Biohydrogen and Biomethane
by Oleksandr Tashyrev, Vira Hovorukha, Olesia Havryliuk, Iryna Sioma, Galina Gladka, Olga Kalinichenko, Paweł Włodarczyk, Dariusz Suszanowicz, Hennadiy Zhuk and Yuri Ivanov
Energies 2022, 15(3), 911; https://doi.org/10.3390/en15030911 - 27 Jan 2022
Cited by 7 | Viewed by 2198
Abstract
A huge amount of organic waste is generated annually around the globe. The main sources of solid and liquid organic waste are municipalities and canning and food industries. Most of it is disposed of in an environmentally unfriendly way since none of the [...] Read more.
A huge amount of organic waste is generated annually around the globe. The main sources of solid and liquid organic waste are municipalities and canning and food industries. Most of it is disposed of in an environmentally unfriendly way since none of the modern recycling technologies can cope with such immense volumes of waste. Microbiological and biotechnological approaches are extremely promising for solving this environmental problem. Moreover, organic waste can serve as the substrate to obtain alternative energy, such as biohydrogen (H2) and biomethane (CH4). This work aimed to design and test new technology for the degradation of food waste, coupled with biohydrogen and biomethane production, as well as liquid organic leachate purification. The effective treatment of waste was achieved due to the application of the specific granular microbial preparation. Microbiological and physicochemical methods were used to measure the fermentation parameters. As a result, a four-module direct flow installation efficiently couples spatial succession of anaerobic and aerobic bacteria with other micro- and macroorganisms to simultaneously recycle organic waste, remediate the resulting leachate, and generate biogas. Full article
(This article belongs to the Special Issue Green Energy Harvesting Devices & Technologies)
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Graphical abstract

12 pages, 6064 KiB  
Communication
Mechanical Durability Assessment of an Energy-Harvesting Piezoelectric Inverted Flag
by Kaidong Yang, Andrea Cioncolini, Mostafa R. A. Nabawy and Alistair Revell
Energies 2022, 15(1), 77; https://doi.org/10.3390/en15010077 - 23 Dec 2021
Cited by 9 | Viewed by 2362
Abstract
This paper presents results from a practical assessment of the endurance of an inverted flag energy harvester, tested over multiple days in a wind tunnel to provide first insights into flapping fatigue and failure. The inverted flag is a composite bimorph, composed of [...] Read more.
This paper presents results from a practical assessment of the endurance of an inverted flag energy harvester, tested over multiple days in a wind tunnel to provide first insights into flapping fatigue and failure. The inverted flag is a composite bimorph, composed of PVDF (polyvinylidene difluoride) strips combined with a passive metallic core to provide sufficient stiffness. The flag, derived from an earlier, more extensive study, flaps with a typical amplitude of ~120 degrees and a frequency of ~2 Hz, generating a constant power of ~0.09 mW in a wind velocity of 6 m/s. The flag was observed to complete ~5×105 cycles before failure, corresponding to ~70 h of operation. The energy generated over this lifespan is estimated to be sufficient to power a standard low-power temperature sensor for several months at a sampling rate of one sample/minute, which would be adequate for applications such as wildfire detection, environmental monitoring, and agriculture management. This study indicates that structural fatigue may present a practical obstacle to the wider development of this technology, particularly in the context of their usual justification as a ‘deploy and forget’ alternative to battery power. Further work is required to improve the fatigue resistance of the flag material. Full article
(This article belongs to the Special Issue Green Energy Harvesting Devices & Technologies)
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