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Energy Technology and Thermodynamics

A special issue of Entropy (ISSN 1099-4300). This special issue belongs to the section "Thermodynamics".

Deadline for manuscript submissions: closed (15 November 2020)

Special Issue Editor

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Guest Editor
Chair of Exergy-based Methods for Refrigeration Systems, Technische Universität Berlin, Marchstraße 18, 10587 Berlin, Germany
Interests: energy engineering and refrigeration; energy storage; applied thermodynamics; exergy-based methods; development of energy, cost, and environmentally effective energy-conversion technologies
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Special Issue Information

Dear Colleagues,

This Special Issue focuses on the application of the first and second laws of thermodynamics as well as exergy analysis for the modelling, analysis, evaluation, improvement, and optimization of different energy-conversion systems. Reports on any kind of power generation systems, hybrid power generation systems, systems implementing renewable energy sources, energy storage concepts, refrigeration, and cryogenic systems are invited.

Exergy analysis (the combination of the first and second laws of thermodynamics) is recognized as the most effective tool for evaluating the quality of energy carriers, the inefficiencies in energy-conversion or energy-intensive chemical processes, and the rational use of energy. Papers discussing the application of exergy-based methods are also invited.

Research contributions in the area of micro thermodynamics with the application to energy-conversion processes are welcome for this Special Issue.

Prof. Dr. Tatiana Morosuk
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. 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 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.


  • power generation systems
  • hybrid systems
  • renewable energy systems
  • energy storage
  • refrigeration
  • cryogenics
  • energy analysis
  • entropy analysis
  • exergy analysis
  • macro thermodynamics
  • micro thermodynamics

Published Papers (1 paper)

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20 pages, 2713 KiB  
Exergy and Exergoeconomic Analysis of a Cogeneration Hybrid Solar Organic Rankine Cycle with Ejector
by Bourhan Tashtoush, Tatiana Morosuk and Jigar Chudasama
Entropy 2020, 22(6), 702; https://doi.org/10.3390/e22060702 - 24 Jun 2020
Cited by 19 | Viewed by 3381
Solar energy is utilized in a combined ejector refrigeration system with an organic Rankine cycle (ORC) to produce a cooling effect and generate electrical power. This study aims at increasing the utilized share of the collected solar thermal energy by inserting an ORC [...] Read more.
Solar energy is utilized in a combined ejector refrigeration system with an organic Rankine cycle (ORC) to produce a cooling effect and generate electrical power. This study aims at increasing the utilized share of the collected solar thermal energy by inserting an ORC into the system. As the ejector refrigeration cycle reaches its maximum coefficient of performance (COP), the ORC starts working and generating electrical power. This electricity is used to run the circulating pumps and the control system, which makes the system autonomous. For the ejector refrigeration system, R134a refrigerant is selected as the working fluid for its performance characteristics and environmentally friendly nature. The COP of 0.53 was obtained for the ejector refrigeration cycle. The combined cycle of the solar ejector refrigeration and ORC is modeled in EBSILON Professional. Different parameters like generator temperature and pressure, condenser temperature and pressure, and entrainment ratio are studied, and the effect of these parameters on the cycle COP is investigated. Exergy, economic, and exergoeconomic analyses of the hybrid system are carried out to identify the thermodynamic and cost inefficiencies present in various components of the system. Full article
(This article belongs to the Special Issue Energy Technology and Thermodynamics)
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