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Advances in Concentrating Solar Power Systems

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A2: Solar Energy and Photovoltaic Systems".

Deadline for manuscript submissions: closed (20 July 2021) | Viewed by 6319

Special Issue Editor


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Guest Editor
Department of Industrial Engineering, University of Padova, 35131 Padova, Italy
Interests: modeling; simulation; optimization; mixed-integer linear programming; energy engineering; energy conversion; energy storage; renewable energy technologies; smart energy systems; energy communities; predictive maintenance
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Special Issue Information

Dear Colleagues,

Solar radiation is the most abundant and distributed primary energy source on Earth and therefore it is naturally expected to play a fundamental role in the necessary transition from the present electric system, still mainly based on fossil fuels, to a totally renewable and sustainable one.

Compared to the currently more widespread photovoltaic technologies, which require the difficult storage of electricity (using, for instance, batteries) to address the issues related to the natural variability of the solar radiation, Concentrating Solar Power (CSP) systems are capable of storing large amounts of energy through the use of thermal energy storage, which are better in terms of efficiency and applicability on a larger scale. This makes CSP a far more promising solution for large scale power generation from solar and therefore the most suitable technology to promote a massive penetration of solar energy in the power generation industry.

Moreover, the integration of CSP technology in existing large-scale fossil-fueled power plants can provide cost-effective environmental impact mitigation, guaranteeing at the same time a firm supply of electricity. The main advantages of integrated versus solar only power plants are equipment sharing, and in turn the lower investment costs, higher load factor, reduced financial risks, extension of the suitable locations for the solar plant (in terms of lower acceptable solar irradiance) and lower impact on the existing electric grid.

This Special Issue aims to take stock of the more recent advances and innovations in the field seeking to concentrate solar power generation. The Guest Editor invites original research papers and comprehensive reviews on all aspects of this field, from technological developments on collectors/central receivers, storage systems and heat transfer fluids for CSP applications to new solar-only or integrated power system configurations.

Dr. Sergio Rech
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

  • Solar energy
  • Concentrating solar power (CSP)
  • Thermodynamic cycles for CSP
  • Parabolic trough collectors
  • Linear Fresnel collectors
  • Solar central receiver
  • Solar dish
  • Hybrid solar systems
  • Thermal energy storage
  • Innovative heat transfer fluids

Published Papers (2 papers)

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Research

24 pages, 4088 KiB  
Article
Development and Characterization of Concrete/PCM/Diatomite Composites for Thermal Energy Storage in CSP/CST Applications
by Adio Miliozzi, Franco Dominici, Mauro Candelori, Elisabetta Veca, Raffaele Liberatore, Daniele Nicolini and Luigi Torre
Energies 2021, 14(15), 4410; https://doi.org/10.3390/en14154410 - 21 Jul 2021
Cited by 15 | Viewed by 2202
Abstract
Thermal energy storage (TES) systems for concentrated solar power plants are essential for the convenience of renewable energy sources in terms of energy dispatchability, economical aspects and their larger use. TES systems based on the use of concrete have been demonstrated to possess [...] Read more.
Thermal energy storage (TES) systems for concentrated solar power plants are essential for the convenience of renewable energy sources in terms of energy dispatchability, economical aspects and their larger use. TES systems based on the use of concrete have been demonstrated to possess good heat exchange characteristics, wide availability of the heat storage medium and low cost. Therefore, the purpose of this work was the development and characterization of a new concrete-based heat storage material containing a concrete mix capable of operating at medium–high temperatures with improved performance. In this work, a small amount of shape-stabilized phase change material (PCM) was included, thus developing a new material capable of storing energy both as sensible and latent heat. This material was therefore characterized thermally and mechanically and showed increased thermal properties such as stored energy density (up to +7%, with a temperature difference of 100 °C at an average operating temperature of 250 °C) when 5 wt% of PCM was added. By taking advantage of these characteristics, particularly the higher energy density, thermal energy storage systems that are more compact and economically feasible can be built to operate within a temperature range of approximately 150–350 °C with a reduction, compared to a concrete-only based thermal energy storage system, of approximately 7% for the required volume and cost. Full article
(This article belongs to the Special Issue Advances in Concentrating Solar Power Systems)
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27 pages, 4485 KiB  
Article
Modeling and Hourly Time-Scale Characterization of the Main Energy Parameters of Parabolic-Trough Solar Thermal Power Plants Using a Simplified Quasi-Dynamic Model
by Ignacio Arias, Eduardo Zarza, Loreto Valenzuela, Manuel Pérez-García, José Alfonso Romero Ramos and Rodrigo Escobar
Energies 2021, 14(1), 221; https://doi.org/10.3390/en14010221 - 04 Jan 2021
Cited by 6 | Viewed by 3253
Abstract
A simplified mathematical model of parabolic-trough solar thermal power plants, which allow one to carry out an energetic characterization of the main thermal parameters that influence the solar field performance, was evaluated through a comparison of simulation results. Two geographical locations were selected [...] Read more.
A simplified mathematical model of parabolic-trough solar thermal power plants, which allow one to carry out an energetic characterization of the main thermal parameters that influence the solar field performance, was evaluated through a comparison of simulation results. Two geographical locations were selected to evaluate the mathematical model proposed in this work—one in each hemisphere—and design considerations according with the practical/operational experience were taken. Furthermore, independent simulations were performed using the System Advisor Model (SAM) software, their results were compared with those obtained by the simplified model. According with the above, the mathematical model allows one to carry out simulations with a high degree of flexibility and adaptability, in which the equations that allow the plant to be energetically characterized are composed of a series of logical conditions that help identify boundary conditions between dawn and sunset, direct normal irradiance transients, and when the thermal energy storage system must compensate the solar field energy deficits to maintain the full load operation of the plant. Due to the above, the developed model allows one to obtain satisfactory simulation results; referring to the net electric power production, this model provides results in both hemispheres with a relative percentage error in the range of [0.28–8.38%] compared with the results obtained with the SAM, with mean square values of 4.57% and 4.21% for sites 1 and 2, respectively. Full article
(This article belongs to the Special Issue Advances in Concentrating Solar Power Systems)
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