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Heat Transfer Advances for Energy Conservation and Pollution Control
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Heat Transfer Advances for Energy Conservation and Pollution Control

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

Deadline for manuscript submissions: closed (15 September 2020) | Viewed by 5037

Special Issue Editor

Prof. Dr. Dariusz Mikielewicz

E-Mail Website
Guest Editor
Department Mechanical Engineering, Gdańsk University of Technology, Gdansk, Poland
Interests: decentralized energy systems; high temperature heat pumps; micro-CHP systems; heat recovery

Special Issue Information

Dear Colleagues,

It is vital for climate justice to pursue a pathway to zero carbon emissions by 2050 to limit global temperature rise to 1.5 °C above pre-industrial levels and to minimize the adverse impacts of climate change on people. Energy usage and production, along with environment pollution, have been a worldwide concern. A better understanding of the heat transfer processes during energy conversion and transport is crucial for developing advanced energy conservation and pollution control technologies. Significant progresses have been achieved through decades of efforts in the research and development of power and energy engineering.

The Special Issue of Energies aims to provide a forum for the exchange of the latest technical information, for the dissemination of high-quality research results, and for the presentation of the newest developments in energy conversion and pollution control, which can contribute to the improvement of society’s wellbeing. This Special Issue targets the topics of clean energy and storage techniques, high efficiency heat exchangers and advanced energy systems, energy efficiency in energy conversion equipment, etc.

Contributions should reflect the latest research achievements, which comply with the strategic development of energy policy in the world and meet the important demand of international economic development for energy.

Prof. Dr. Dariusz Mikielewicz
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

  • Clean energy conversion technologies
  • New thermodynamic cycles for cogeneration and trigeneration production
  • High efficiency thermodynamic cycles
  • High temperature heat pumps
  • Heat recovery technologies from low and medium temperature resources

Published Papers (2 papers)

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Research

12 pages, 3785 KiB  
Article
Subcritical Thermodynamic Cycles with Organic Medium and Isothermal Expansion
by Krzysztof Kosowski and Marian Piwowarski
Energies 2020, 13(17), 4340; https://doi.org/10.3390/en13174340 - 21 Aug 2020
Cited by 3 | Viewed by 1814
Abstract
The efficiencies of the Organic Rankine Cycle (ORC) are not very high and only very seldom do they exceed 20%. The increase and optimization of initial parameters and certain modifications of the thermodynamic cycle make it possible to overcome these drawbacks. A new [...] Read more.
The efficiencies of the Organic Rankine Cycle (ORC) are not very high and only very seldom do they exceed 20%. The increase and optimization of initial parameters and certain modifications of the thermodynamic cycle make it possible to overcome these drawbacks. A new modified cycle has been described and analyzed in detail in the paper. Similarly to the Ericsson cycle for gas turbines, isothermal expansion in the turbine is suggested for the power plant with organic media. The new cycle and the typical ORC power plants have the same block diagram. The only difference is that expansion in the proposed cycle occurs not adiabatically but as an isothermal process. The thermodynamic calculations have been carried out for 11 various fluids and 4 different cycles. The obtained results have clearly shown that cycles with isothermal expansion (isothermal turbines) are characterized by remarkably higher efficiency than typical power plants with adiabatic turbines. The increase in efficiency varies from 6 to 12 percent points for cycles with saturated live vapor and from 4 to 7 percent points for cycles with superheated live vapor. The performed analyses have shown that it is possible to achieve a very high efficiency (over 45%) of organic cycle, which is a very competitive value. In such cases the proposed power plants can achieve an efficiency which is higher than that of modern steam turbine plants with supercritical parameters. Full article
(This article belongs to the Special Issue Heat Transfer Advances for Energy Conservation and Pollution Control)
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23 pages, 16067 KiB  
Article
Numerical Analysis of Heat Transfer Performance of In Situ Thermal Remediation of Large Polluted Soil Areas
by Weishu Wang, Chuang Li, Yun-Ze Li, Man Yuan and Tong Li
Energies 2019, 12(24), 4622; https://doi.org/10.3390/en12244622 - 05 Dec 2019
Cited by 17 | Viewed by 2804
Abstract
In recent years soil contamination has become a global problem because of industrial development. In situ thermal remediation has been proposed recently to not only lower costs, but also reduce the environmental impact compared to other soil remediation technologies such as chemical remediation. [...] Read more.
In recent years soil contamination has become a global problem because of industrial development. In situ thermal remediation has been proposed recently to not only lower costs, but also reduce the environmental impact compared to other soil remediation technologies such as chemical remediation. During the soil thermal remediation process, factors such as soil type and water content affecting the heat transfer pose challenges. In this study, a simple mathematical model is presented and the heat transfer performance during the soil heating process is researched via COMSOL Multiphysics 5.3 software (COMSOL Inc., Stockholm, Sweden). The temperature distribution and heating period under different operating conditions are evaluated. The simulation results show that the average soil temperature exhibits three stages during the heating process. First, soil is heated from the ambient temperature to the water boiling temperature (100 °C). Then, the soil stays at the water boiling temperature for a while before reaching the target temperature. Simultaneously, the effects of initial water content and groundwater flow on heat transfer are also studied. In addition, the results of a simulation can provide a reference for in situ heating remediation technology. Full article
(This article belongs to the Special Issue Heat Transfer Advances for Energy Conservation and Pollution Control)
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