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Multi-Source Energy Systems
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Multi-Source Energy Systems

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

Deadline for manuscript submissions: closed (31 July 2021) | Viewed by 11432

Special Issue Editor

Prof. Dr. Pietropaolo Morrone

E-Mail Website
Guest Editor
Department of Mechanical, Energy and Management Engineering, University of Calabria, Via P. Bucci, Cubo 44 C, I-87036 Arcavacata Di Rende, Italy
Interests: combined-cycle power plants; polygeneration systems; multi-source power generation systems; CHP/CCHP systems; optimization; ORC systems
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Multi-source energy conversion systems represent an effective solution capable of overcoming today’s sustainability and environmental concerns, to decrease primary energy consumption, increasing flexibility and decentralized energy generation. However, the exploitation of different energy sources (biomass, solar, wind, tidal energy, natural gas, etc.) represents a complex task owing to the high number of potential technical solutions and integration possibilities. Cost-effective and efficient integrated solutions, as well as proper operating strategies, must be found and investigated. Toward this purpose, innovative papers regarding energy analyses, techno-economic investigations, modelling, optimization, and experimental activities on multi-source systems are welcomed in this Special Issue. The fields of application can range from the residential to the industrial sectors.

Dr. Pietropaolo Morrone
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

  • renewable energy
  • energy systems
  • multi-source systems
  • decentralized energy generation
  • biomass
  • solar
  • wind

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Published Papers (4 papers)

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Research

21 pages, 4983 KiB  
Article
Organic Rankine Cycle-Ground Source Heat Pump with Seasonal Energy Storage Based Micro-Cogeneration System in Cold Climates: The Case for Canada
by Wahiba Yaïci, Andres Annuk, Evgueniy Entchev, Michela Longo and Janar Kalder
Energies 2021, 14(18), 5705; https://doi.org/10.3390/en14185705 - 10 Sep 2021
Cited by 2 | Viewed by 2274
Abstract
In cold climatic regions such as those located across Canada, it is necessary to implement heating system technology that is ultra-efficient and that has near-zero rates of emissions. Such systems would satisfy consumers’ energy needs and also comply with environmental standards, especially because [...] Read more.
In cold climatic regions such as those located across Canada, it is necessary to implement heating system technology that is ultra-efficient and that has near-zero rates of emissions. Such systems would satisfy consumers’ energy needs and also comply with environmental standards, especially because the systems would account for more than 80% of residential energy use. This paper investigates two complementary efficient systems that can support these heating systems; ground-source heat pumps (GSHPs) and organic Rankine cycle systems (ORCs). The study proposes to couple these two systems in a parallel configuration. A dynamic simulation model created in TRNSYS platform has been deployed to assess the performance of the combined ORC-GSHP based micro-cogeneration system. This former provides heating to a residential house during the heating mode as needed. It has the capacity to switch to a charging mode, during which the ORC system is directly coupled to the ground heat exchanger (GHE), which works as a thermal energy storage and supplies energy to the GSHP. The feasibility of this combined system arrangement, and its comparison with a conventional GSHP system are examined for use in residential buildings in three cities across the varied climatic regions within Canada, namely Edmonton (AB), Halifax (NS), and Vancouver (BC). Results showed that the proposed micro-cogeneration system recorded less energy use of over 80%. The addition of the ORC system had a definite effect on the performance of the GSHP in that it decreased the operating hours from 11–58% compared to the conventional GSHP case and maintained consistently higher COP values. These results may help to specify viable ORC-GSHP based micro-co/trigeneration systems in cold climatic applications and should be useful for prototype design and development. Full article
(This article belongs to the Special Issue Multi-Source Energy Systems)
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21 pages, 6655 KiB  
Article
Techno-Economic Analysis of Biofuel, Solar and Wind Multi-Source Small-Scale CHP Systems
by Angelo Algieri, Pietropaolo Morrone and Sergio Bova
Energies 2020, 13(11), 3002; https://doi.org/10.3390/en13113002 - 11 Jun 2020
Cited by 18 | Viewed by 3307
Abstract
The aim of the paper is the techno-economic analysis of innovative integrated combined heat and power (CHP) systems for the exploitation of different renewable sources in the residential sector. To this purpose, a biofuel-driven organic Rankine cycle (ORC) is combined with a wind [...] Read more.
The aim of the paper is the techno-economic analysis of innovative integrated combined heat and power (CHP) systems for the exploitation of different renewable sources in the residential sector. To this purpose, a biofuel-driven organic Rankine cycle (ORC) is combined with a wind turbine, a photovoltaic system and an auxiliary boiler. The subsystems work in parallel to satisfy the electric and heat demand of final users: a block of 40 dwellings in a smart community. A 12.6 kWel ORC is selected according to a thermal-driven strategy, while wind and solar subsystems are introduced to increase the global system efficiency and the electric self-consumption. The ORC can be switched-off or operated at partial load when solar and/or wind sources are significant. A multi-variable optimization has been carried out to find the proper size of the wind turbine and photovoltaic subsystems and to define the suitable operating strategy. To this purpose, several production wind turbines (1.0–60.0 kWel) and photovoltaic units (0.3–63.0 kWel) have been considered with the aim of finding the optimal trade-off between the maximum electric self-consumption and the minimum payback period and electric surplus. The multi-objective optimization suggests the integration of 12.6 kWel ORC with 10 kWel wind turbine and 6.3 kWel photovoltaic subsystem. The investigation demonstrates that the proposed multi-source integrated system offers a viable solution for smart-communities and distributed energy production with a significant improvement in the global system efficiency (+7.5%) and self-consumption (+15.0%) compared to the sole ORC apparatus. Full article
(This article belongs to the Special Issue Multi-Source Energy Systems)
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21 pages, 10265 KiB  
Article
Research on Real-Time Optimized Operation and Dispatching Strategy for Integrated Energy System Based on Error Correction
by Aidong Zeng, Sipeng Hao, Jia Ning, Qingshan Xu and Ling Jiang
Energies 2020, 13(11), 2908; https://doi.org/10.3390/en13112908 - 5 Jun 2020
Cited by 10 | Viewed by 2423
Abstract
A real-time error correction operation model for an integrated energy system is proposed in this paper, based on the analysis of the real-time optimized operation structure of an integrated energy system and the characteristics of the system. The model makes real-time corrections to [...] Read more.
A real-time error correction operation model for an integrated energy system is proposed in this paper, based on the analysis of the real-time optimized operation structure of an integrated energy system and the characteristics of the system. The model makes real-time corrections to the day-ahead operation strategy of the integrated energy system, to offset forecast errors from the renewable power generation system and multi-energy load system. When unbalanced power occurs in the system due to prediction errors, the model comprehensively considers the total capacity of each energy supply and energy storage equipment, adjustable margin, power climbing speed and adjustment cost, to formulate the droop rate which determines the unbalanced power that each device will undertake at the next time interval, while taking the day-ahead dispatching goals of the system into consideration. The case study shows that the dispatching strategy obtained by the real-time error correction operation model makes the power output change trend of the energy supply equipment consistent with the day-ahead dispatching plan at the next time interval, which ensures the safety, stability and economy of the real-time operation of the integrated energy system. Full article
(This article belongs to the Special Issue Multi-Source Energy Systems)
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24 pages, 8724 KiB  
Article
Market Trading Model of Urban Energy Internet Based on Tripartite Game Theory
by Jun Liu, Jinchun Chen, Chao Wang, Zhang Chen and Xinglei Liu
Energies 2020, 13(7), 1834; https://doi.org/10.3390/en13071834 - 10 Apr 2020
Cited by 4 | Viewed by 2711
Abstract
As an important driving force to promote the energy revolution, the emergence of the energy internet has provided new ideas for the marketization and flexibility of multi-energy transactions. How to realize multi-energy joint trading is a key issue in the development of the [...] Read more.
As an important driving force to promote the energy revolution, the emergence of the energy internet has provided new ideas for the marketization and flexibility of multi-energy transactions. How to realize multi-energy joint trading is a key issue in the development of the energy market. An urban energy internet market trading model among energy suppliers, energy service providers and the large users in the urban area, based on tripartite game theory, is established in this paper. Considering the cost–income function of each market entity and the basic market trading mechanism, a new game-tree search method is proposed to solve the Nash equilibria for the game model. The Nash equilibria of the tripartite game can be obtained, and the market transaction status corresponding to the Nash equilibria is analyzed from the perspective of the market transactions. The multi-energy joint transaction and market equilibria can be easily implemented for the bids and offers of the multiple energy entities in the urban energy internet market. Full article
(This article belongs to the Special Issue Multi-Source Energy Systems)
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