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Energies
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Analysis of Cogeneration Systems and Electricity Consumption
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Analysis of Cogeneration Systems and Electricity Consumption

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "F1: Electrical Power System".

Deadline for manuscript submissions: closed (30 June 2023) | Viewed by 6796

Special Issue Editors

Dr. Pavel Atanasoae

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Guest Editor
Faculty of Electrical Engineering and Computer Science, tefan cel Mare University of Suceava, 720229 Suceava, Romania
Interests: cogeneration; renewable energy sources; buildings energy efficiency; energy market; high efficiency cogeneration; support schemes; green certificates; thermal and electrical power generation
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Radu Dumitru Pentiuc

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Guest Editor
Department of Electrotechnics, Faculty of Electrical Engineering and Computer Science, Stefan cel Mare University of Suceava, 720229 Suceava, Romania
Interests: energy management; industrial energy efficiency; energy balances; electrical engineering; distribution and use of electricity; energy audits; lighting
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Laurențiu Dan Milici

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Guest Editor
Department of Electrotechnics, Faculty of Electrical Engineering and Computer Science, Stefan cel Mare University of Suceava, 720229 Suceava, Romania
Interests: electrical engineering; artificial intelligence; optimization algorithms; instrumentation; education in engineering
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Constantin Filote

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Guest Editor
Department of Electrotechnics, Faculty of Electrical Engineering and Computer Science, Stefan cel Mare University of Suceava, 720229 Suceava, Romania
Interests: digital signal processing; power electronic; spower quality; smart grids; energy efficiency
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues, 

The complexity of issues related to the generation, transmission, distribution, and consumption of energy has greatly increased in recent times along with the worsening of global environmental problems, climate change, and restrictions on conventional power sources. Therefore, the current concerns in the field of energy production are oriented towards the application of technologies that have the least impact on the environment. Moreover, energy consumption must be controlled and managed, especially by careful monitoring of energy efficiency and by diversifying primary energy sources. In this context, cogeneration or combined heat and power (CHP) is significantly more efficient than the separate generation of heat and electricity. CHP is flexible, has low greenhouse gas emissions, and allows rapidly responding to energy needs. Competition on liberalized power markets creates incentives that lead to more efficient decisions in the operation of power systems and investments in energy sources. Currently, the promotion of high efficiency cogeneration based on the demand for useful heat is a priority for the governments of many countries. 

This Special Issue aims to present and disseminate the original research or review articles on the important topic of cogeneration systems. The call for papers seeks to collect several empirical, theoretical, or case studies and innovative technical developments, with practical implications for the design, installation, and operation of cogeneration systems. Areas of application can range from the individual residential and non-residential buildings to urban and industrial sectors. 

Topics of interest for publication (research articles, reviews articles) include but are not limited to:

  • CHP technologies (steam turbine, gas turbine, gas–steam combined cycle, microturbines; internal combustion engine; Stirling engines; fuel cells; organic Rankine cycle; other types of technologies);
  • Cogeneration systems in buildings;
  • Trigeneration;
  • Applications of cogeneration systems;
  • Modeling, simulating, monitoring, optimization, case studies;
  • Economic dispatch of multiple energy carriers;
  • District heating and cooling systems;
  • Generating energy from waste;
  • Heat recovery systems;
  • Distributed generation;
  • Use of renewable sources in cogeneration applications;
  • Reliability and availability of cogeneration systems;
  • Cost benefit analysis of cogeneration systems;
  • Feasibility study and economic analysis;
  • Cost allocation in cogeneration;
  • Indicators for assessing the performance of cogeneration systems;
  • Support schemes, regulatory and legal framework;
  • Integration of energy storage systems for improved efficiency and flexibility of CHP plants.

Prof. Dr. Pavel Atănăsoae
Prof. Dr. Radu Dumitru Pentiuc
Prof. Dr. Laurențiu Dan Milici
Prof. Dr. Constantin Filote
Guest Editors

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

  • cogeneration
  • combined heat and power plants
  • trigeneration
  • primary energy savings
  • high efficiency cogeneration
  • cost allocation in cogeneration
  • operating strategies of CHP plants
  • electricity and heat prices
  • electricity consumption
  • power to heat ratio

Related Special Issue

Published Papers (4 papers)

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Research

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13 pages, 1444 KiB  
Article
Electricity Correlation Evaluation Based on Improved Logistic Algorithm Integrating Periodic Characteristics of Load and Temperature
by Xiaotian Zhang, Kaiyuan Hou, Junjie Yang, Jiyun Hu, Guangzhi Yao and Jiannan Zhang
Energies 2023, 16(15), 5762; https://0-doi-org.brum.beds.ac.uk/10.3390/en16155762 - 02 Aug 2023
Viewed by 714
Abstract
The power system (abbreviated as PS for convenience) is one of the indispensable infrastructures in modern society, and its stable operation is crucial for ensuring the normal operation of the national economy and society. With the continuous expansion and complexity of the power [...] Read more.
The power system (abbreviated as PS for convenience) is one of the indispensable infrastructures in modern society, and its stable operation is crucial for ensuring the normal operation of the national economy and society. With the continuous expansion and complexity of the power grid, power correlation analysis has become increasingly important in the operation, planning, and management of the power system. Temperature is one of the main factors affecting power load (abbreviated as PL for convenience), and how to integrate the periodic characteristics of temperature with load analysis has become a top priority. This article improved the logistic algorithm and applied it to the power correlation analysis of combined load and temperature periodic characteristics and collected four seasonal PL parameters and temperature parameters from January to December 2022. The study analyzed the correlation between PL and temperature periodic characteristics, and also compared the accuracy of PS correlation analysis using the logistic algorithm and improved logistic algorithm. According to the experimental results, it could be concluded that at 1 and 2 o’clock on 1 January 2022, the temperature was at the lowest, both of which were −3 °C, while the PS load was 1000 MW and 1100 MW, respectively. It could be seen that in winter, as the temperature was lower the PL increased. In July 2022, the load and temperature of the PS were continuously increasing, reaching their maximum at 10 o’clock and it could be observed that as the temperature increased, the PL also increased. This was because both low and high temperatures increased the operation of the power equipment, thereby increasing the PL. It was also confirmed that fusing multiple features and adopting an improved logistic algorithm could improve the accuracy of the prediction results. The improved logistic algorithm could be applied to related fields such as PL forecasting and provide a scientific decision-making basis for the power industry. This could also provide a reference for data analysis and prediction in other fields. Full article
(This article belongs to the Special Issue Analysis of Cogeneration Systems and Electricity Consumption)
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16 pages, 3845 KiB  
Article
Analysis of Energy Generation Efficiency and Reliability of a Cogeneration Unit Powered by Biogas
by Józef Ciuła, Sławomir Kowalski, Agnieszka Generowicz, Krzysztof Barbusiński, Zbigniew Matuszak and Krzysztof Gaska
Energies 2023, 16(5), 2180; https://0-doi-org.brum.beds.ac.uk/10.3390/en16052180 - 24 Feb 2023
Cited by 4 | Viewed by 2077
Abstract
Landfill gas recovery and utilisation is a solution which reduces the adverse environmental impact of the landfill. Combined heat and power (CHP) generation improves the energy balance of the facility and enables the optimal management of energy generated from a renewable source. This [...] Read more.
Landfill gas recovery and utilisation is a solution which reduces the adverse environmental impact of the landfill. Combined heat and power (CHP) generation improves the energy balance of the facility and enables the optimal management of energy generated from a renewable source. This article aims to analyse the operation of the CHP unit in two aspects, that is, in terms of energy generation efficiency and operational availability. Energy ratios were calculated and the analysis was based on the Weibull distribution in order to assess the CHP unit’s operational reliability to minimise costs and maximise energy production. The results of the investigations and analyses demonstrated an increase of the gas yield by 29.5%, an increase of energy production by approx. 42%, and the reduction of downtime by 28.2% from 2018 to 2022. Studies related to the efficiency and reliability of operation of the cogeneration unit showed an increase in all the main parameters analysed, which resulted in greater energy and operational efficiency. The research which has been conducted is a significant scientific contribution to the optimisation of the “waste-to-energy” process for cogeneration units with the capacity of up to 0.5 MW. Full article
(This article belongs to the Special Issue Analysis of Cogeneration Systems and Electricity Consumption)
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27 pages, 5500 KiB  
Article
Opportunity Analysis of Cogeneration and Trigeneration Solutions: An Application in the Case of a Drug Factory
by Pavel Atănăsoae, Radu Dumitru Pentiuc and Laurențiu Dan Milici
Energies 2022, 15(8), 2737; https://0-doi-org.brum.beds.ac.uk/10.3390/en15082737 - 08 Apr 2022
Cited by 4 | Viewed by 1550
Abstract
Increasing the energy efficiency of a drug factory is the main purpose of this paper. Different configurations of cogeneration systems are analyzed to meet most of the heat demand and to flatten the heat load duration curve. Due to the variable nature of [...] Read more.
Increasing the energy efficiency of a drug factory is the main purpose of this paper. Different configurations of cogeneration systems are analyzed to meet most of the heat demand and to flatten the heat load duration curve. Due to the variable nature of heat demand, there is a need for heat storage, but there is also a need for the fragmentation of power into two units of cogeneration to increase the operational flexibility in these plants. When the heat produced by the combined heat and power (CHP) unit is insufficient to meet the heat load, the heat stored can then be used to meet that demand. Heat storage plays a significant role in managing the heat supply and demand profiles in the CHP system, and in reducing its capacity and size. Trigeneration and heat storage are used as options to increase the operating time of cogeneration units and, implicitly, the amounts of heat and electricity generated in cogeneration. The results of this study demonstrate the economic and technical viability of the cogeneration and trigeneration solutions proposed. For the values of electricity and natural gas prices at the time of the analysis (2021), Scenario 4 is characterized as the optimal economical and technical option for the current rate of consumption, as it ensures the highest values of heat and electricity production and the shortest investment payback period (5.06 years). Compared with separate heat and power generation, we highlight a primary energy saving of 25.35% and a reduction in CO2 emissions of 241,138 kg CO2/year. Full article
(This article belongs to the Special Issue Analysis of Cogeneration Systems and Electricity Consumption)
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Review

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24 pages, 4638 KiB  
Review
Future Research Tendencies and Possibilities of Using Cogeneration Applications of Solar Air Heaters: A Bibliometric Analysis
by Visarion Cătălin Ifrim, Laurențiu Dan Milici, Pavel Atănăsoae, Daniela Irimia and Radu Dumitru Pentiuc
Energies 2022, 15(19), 7114; https://0-doi-org.brum.beds.ac.uk/10.3390/en15197114 - 28 Sep 2022
Cited by 5 | Viewed by 1655
Abstract
Solar air heater systems are equipment that uses energy captured directly from the sun to heat an existing airflow through the module. The technology to operate these systems is based on clean, renewable and free energy. Solar air heaters absorb thermal energy from [...] Read more.
Solar air heater systems are equipment that uses energy captured directly from the sun to heat an existing airflow through the module. The technology to operate these systems is based on clean, renewable and free energy. Solar air heaters absorb thermal energy from the sun using an ab-sorption surface and achieve a transfer of heat from the absorption surface to the air flow supplied by one or two fans. This type of equipment can be used for space heating, drying, or ventilation processes. In addition, the equipment is capable of operating in cogeneration with other systems, e.g., preheating the air used for drying wood, preheating the air used to heat industrial premises, or preheating the water used in different heating systems. This scientific work is meant to reveal the current research context and the future opportunities in the case of cogeneration applications of solar air heaters, which are analyzed in light of their actual evolving dynamics. On this basis, we highlight expectations regarding the main problems that the regenerable energy is currently facing in this specific research and development environment as well as focusing our direction on the eventual solutions that are considered in the present and on their shortcomings in the future with evolved necessities. Full article
(This article belongs to the Special Issue Analysis of Cogeneration Systems and Electricity Consumption)
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