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Thermal Energy Perspectives for the 21st Century

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "J: Thermal Management".

Deadline for manuscript submissions: closed (31 March 2022) | Viewed by 4208

Special Issue Editor


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Guest Editor
Department of Economics and Organization Production, Kazan State Power Engineering University, 420066 Kazan, Russia
Interests: combined heat and power; cogeneration plants; integrated energy systems; district heating; heat supply; energy efficiency

Special Issue Information

Dear Colleagues,

The rapid growth of demand for power in the 21st century and the crisis state of the environment cause several technological problems in heat power engineering that should be addressed based on modern criteria for energy efficiency, while reducing costs and minimizing the environmental impact. Important areas of scientific and technological progress in heat power engineering include the creation of new generations of power equipment and the reconstruction and modernization of existing equipment, as well as ensuring the required level of industrial safety of power equipment. Thermal power plants (TPPs) on fossil fuel have been the main industrial source of electricity for many decades. The most important issues of the future development of thermal energy in the world consist in the further technological improvement of thermal power plants in order to increase the efficiency, reliability, and environmental friendliness of the production of electrical and thermal energy. Along with this, scientific and research works are being developed, aimed at the development and implementation of promising technologies for the maximum capture of harmful substances, including greenhouse gases, from fuel combustion products, and at ensuring the environmental safety of TPPs.

This Special Issue entitled “Thermal Energy Perspectives for the 21st Century” aims to perform a comprehensive analysis and discussion of fundamental problems of thermal and power engineering, and the further development paths, i.e., the issues of improving traditional and promising energy technologies in the 21st century.

Dr. Irina G. Akhmetova
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

  • Thermal power plants
  • Power equipment
  • Energy efficiency
  • Pipelines
  • Boilers
  • Thermal insulation
  • Environmental safety
  • Reliability of equipment

Published Papers (2 papers)

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Research

12 pages, 17624 KiB  
Article
Prospects for Solar Energy Development in Belarus and Tatarstan
by Uladzimir Bahach, Anton Brin, Yuri Vankov, Konstantin Verchak, Olga Afanaseva and Svetlana Ilyashenko
Energies 2021, 14(24), 8491; https://0-doi-org.brum.beds.ac.uk/10.3390/en14248491 - 16 Dec 2021
Viewed by 2317
Abstract
This paper discusses the resource, technical, and economic potential of using solar photovoltaic (PV) systems in Belarus and Tatarstan. The considered countries are characterized by poor actinometric conditions and relatively low tariffs for traditional energy resources. At the same time, Belarus is experienced [...] Read more.
This paper discusses the resource, technical, and economic potential of using solar photovoltaic (PV) systems in Belarus and Tatarstan. The considered countries are characterized by poor actinometric conditions and relatively low tariffs for traditional energy resources. At the same time, Belarus is experienced with solar power due to different incentive mechanisms that have been used over the past decade. Moreover, the cost of building solar power plants in Belarus in 2013–2017 was lower than the world average. The cost of electricity production is analyzed depending on the geographical location of sites and the type of owners of solar power plants (i.e., households, businesses and industrial enterprises, electricity producers). Using the data on the cost of photovoltaic systems as presented by IRENA and considering actinometric data for Belarus and Tatarstan, a long-term forecast of PV electricity cost is made. The moments of the break-even points and payback periods are defined for Belarus and Tatarstan. Full article
(This article belongs to the Special Issue Thermal Energy Perspectives for the 21st Century)
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25 pages, 23132 KiB  
Article
Numerical Investigation of the Secondary Swirling in Supersonic Flows of Various Nature Gases
by Vyacheslav Volov, Nikolay Elisov and Anton Lyaskin
Energies 2021, 14(23), 8122; https://0-doi-org.brum.beds.ac.uk/10.3390/en14238122 - 3 Dec 2021
Cited by 1 | Viewed by 1256
Abstract
Despite the application of vortex tubes for cooling, separating gas mixtures, vacuuming, etc., the mechanism of energy separation in vortex tubes remains an object of discussion. This paper studies the effect of secondary swirling in supersonic flows on the energy separation of monatomic [...] Read more.
Despite the application of vortex tubes for cooling, separating gas mixtures, vacuuming, etc., the mechanism of energy separation in vortex tubes remains an object of discussion. This paper studies the effect of secondary swirling in supersonic flows on the energy separation of monatomic and diatomic gases. The approach used is a numerical solution of the Reynolds-averaged Navier-Stokes equations, closed by the Reynolds Stress Model turbulence model. The modelling provided is for a self-vacuuming vortex tube with air, helium, argon, and carbon dioxide. According to the results of the calculations, the effect of secondary swirling is inherent only in viscous gases. A comparison was made between obtained total temperature difference, the level of secondary swirling and power losses on expansion from the nozzle, compression shocks, friction, turbulence, and energy costs to develop cascaded swirl structures. Our results indicate that helium and argon have the highest swirling degree and, consequently, the highest energy separation. Moreover, it can be concluded that the power costs on the development of cascaded vortex structures have a significant role in the efficiency of energy separation. Full article
(This article belongs to the Special Issue Thermal Energy Perspectives for the 21st Century)
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