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Global Progress on Exergetic Cost Analysis

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

Deadline for manuscript submissions: closed (28 February 2022) | Viewed by 6262

Special Issue Editor


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Guest Editor
1. Institute of Energy and Climate Research, Forschungszentrum Jülich GmbH, 52441 Jülich, Germany
2. Mechanical Engineering Department, Engineering Divison, University of Guanajuato, Guanajuato 36000, Mexico
Interests: exergoeconomics; renewable energies; energy system simulation and optimization; solid oxide fuel cells; acoustic emission technique

Special Issue Information

Dear Colleagues, 

The current concern about environmental degradation caused by the irrational use of non-renewable energy sources and the use of inefficient technologies is generating an unprecedented global shift towards the use of more efficient technologies to meet major energy needs such as electricity, heating, and cooling, at the lowest or even zero environmental cost. Hence, the idea of producing commodities at the maximum cost effectiveness is already obsolete. From this perspective, it is clear that there is not only a need to use advanced methods focused on production processes, but also to integrate the emission of pollutants and the generation of residues. So far, one of the most widespread methods worldwide has been exergy cost accounting, also known by the technical terms “exergoeconomics” or “thermoeconomics”. 

There is long-accumulated experience worldwide on the application of the exergy cost accounting method as support in the development and research of more efficient and environmentally friendly energy systems. Hence, it is the right time to analyze the current state of exergy cost accounting techniques, their applications, and the role they can play in the design of new power generation technologies. Therefore, this Special Issue of Energies is open to all researchers who wish to share their progress in the field of exergy cost accounting applied to the analysis of new energy systems or to compare their exergetic economic performance. It is very much hoped that this space will serve as a springboard to further divulge the potential of this type of analysis.

Dr. Victor Rangel-Hernandez
Guest Editor

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Keywords

  • Exergy cost
  • Renewable sources
  • Exergoeconomics
  • Power generation
  • Environment

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Published Papers (2 papers)

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Research

42 pages, 1483 KiB  
Article
The Exergy Cost Theory Revisited
by César Torres and Antonio Valero
Energies 2021, 14(6), 1594; https://doi.org/10.3390/en14061594 - 13 Mar 2021
Cited by 31 | Viewed by 3435
Abstract
This paper reviews the fundamentals of the Exergy Cost Theory, an energy cost accounting methodology to evaluate the physical costs of products of energy systems and their associated waste. Besides, a mathematical and computationally approach is presented, which will allow the practitioner to [...] Read more.
This paper reviews the fundamentals of the Exergy Cost Theory, an energy cost accounting methodology to evaluate the physical costs of products of energy systems and their associated waste. Besides, a mathematical and computationally approach is presented, which will allow the practitioner to carry out studies on production systems regardless of their structural complexity. The exergy cost theory was proposed in 1986 by Valero et al. in their “General theory of exergy savings”. It has been recognized as a powerful tool in the analysis of energy systems and has been applied to the evaluation of energy saving alternatives, local optimisation, thermoeconomic diagnosis, or industrial symbiosis. The waste cost formation process is presented from a thermodynamic perspective rather than the economist’s approach. It is proposed to consider waste as external irreversibilities occurring in plant processes. A new concept, called irreversibility carrier, is introduced, which will allow the identification of the origin, transfer, partial recovery, and disposal of waste. Full article
(This article belongs to the Special Issue Global Progress on Exergetic Cost Analysis)
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15 pages, 4149 KiB  
Article
An Advanced Exergoeconomic Comparison of CO2-Based Transcritical Refrigeration Cycles
by J. M. Belman-Flores, V. H. Rangel-Hernández, V. Pérez-García, A. Zaleta-Aguilar, Qingping Fang and D. Méndez-Méndez
Energies 2020, 13(23), 6454; https://doi.org/10.3390/en13236454 - 6 Dec 2020
Cited by 5 | Viewed by 2373
Abstract
CO2-based transcritical refrigeration cycles are currently gaining significant research attention, as they offer a viable solution to the use of natural refrigerants (e.g., CO2). However, there are almost no papers that offer an exergoeconomic comparison between the different configurations [...] Read more.
CO2-based transcritical refrigeration cycles are currently gaining significant research attention, as they offer a viable solution to the use of natural refrigerants (e.g., CO2). However, there are almost no papers that offer an exergoeconomic comparison between the different configurations of these types of systems. Accordingly, the present work deals with a comparative exergoeconomic analysis of four different CO2-based transcritical refrigeration cycles. In addition, the work is complemented by an analysis of the CO2 abatement costs. The influences of the variation of the evaporating temperature, the gas cooler outlet temperature, and the pressure ratio on the exergy efficiency, product cost rate, exergy destruction cost rate, exergoeconomic factor, and CO2 penalty cost rate are compared in detail. The results show that the transcritical cycle with the ejector has the lowest exergetic product cost and a low environmental impact. Full article
(This article belongs to the Special Issue Global Progress on Exergetic Cost Analysis)
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