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Photovoltaic-Thermal (PVT) and Concentrated Photovoltaic-Thermal (CPVT) Solar Collectors
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Photovoltaic-Thermal (PVT) and Concentrated Photovoltaic-Thermal (CPVT) Solar Collectors

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: 25 August 2025 | Viewed by 2342

Special Issue Editors

Dr. João Gomes

E-Mail Website
Guest Editor
Faculty of Engineering and Sustainable Development, University of Gävle, 80176 Gävle, Sweden
Interests: solar thermal photovoltaics; concentrating solar collectors; photovoltaics thermal collectors (PVT); energy systems; production methods; solar collector design; sustainability; solar system design and monitoring
Dr. Sahand Hosouli

E-Mail Website
Guest Editor
Department of Mechanical Engineering, School of Engineering and the Environment, Kingston University London, Surrey KT1 1LQ, UK
Interests: key design parameters of solar collectors (ST, PV, PVT, C-PVT); thermochemical energy storage; simulation and modeling of renewable energy systems; design and optimization of solar thermal systems and building energy performance; application and optimization of multi criteria decision making (MCDM) methods in renewable energy sector
Dr. Iván Patricio Acosta Pazmiño

E-Mail Website
Guest Editor
Applied Engineering, Research and Development Department, MG Sustainable Engineering, 75321 Uppsala, Sweden
Interests: PVX concepts for maximizing solar to useful energy conversion; applied heat transfer and thermodynamics for solar energy technologies; maximizing the efficiency and lifespan of PV panels by cost-effective and efficient active and passive cooling strategies; dynamic simulation of solar energy systems and its integration with other RES and end-user applications (residential; commercial; and industrial); end-of-life management for photovoltaics (PV) and solar thermal (ST) technologies
Dr. Diogo Oliveira Cabral

E-Mail Website
Guest Editor
Faculty of Engineering and Sustainable Development, University of Gävle, 80176 Gävle, Sweden
Interests: solar thermal; photovoltaics; concentrating solar collectors; photovoltaics thermal collectors (PVT); renewable energy systems; thermodynamics; fluid mechanics; heat transfer; solar collector design; solar system design

Special Issue Information

Dear Colleagues,

We invite you to contribute to a Special Issue entitled "Photovoltaic-Thermal (PVT) and Concentrated Photovoltaic-Thermal (CPVT) Solar Collectors" in Energies Journal, published by MDPI.

Solar collectors are essential components in renewable energy systems, and the integration of Photovoltaic-Thermal (PVT) and Concentrated Photovoltaic-Thermal (CPVT) technologies holds great promise for enhancing the efficiency and versatility of solar energy conversion. This Special Issue aims to showcase the latest research and advancements in the application and optimization of PVT and CPVT solar collectors technologies.

Potential topics for submission include, but are not limited to:

  • Novel design concepts and methodologies for the study of PVT and CPVT solar collectors.
  • Modelling and simulation of PVT and CPVT systems to assess their performance and energy output.
  • Integration of PVT and CPVT technologies in various renewable energy systems.
  • Experimental studies and field trials of PVT and CPVT collectors.
  • Performance evaluation and optimization of PVT and CPVT systems under different operating conditions.
  • Thermal energy storage solutions for PVT and CPVT applications.
  • Economic and environmental assessments of PVT and CPVT solar collectors.
  • Advancements in materials and manufacturing processes for enhanced PVT and CPVT performance.
  • Technological innovations for improving the reliability and durability of PVT and CPVT systems.

As a Guest Editor for this Special Issue, I look forward to receiving your valuable contributions that will shape the future of solar energy utilization. Together, we can advance the field of PVT and CPVT solar collectors and foster sustainable energy practices.

Dr. João Gomes
Dr. Sahand Hosouli
Dr. Iván Patricio Acosta Pazmiño
Dr. Diogo Oliveira Cabral
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

  • PVT solar collectors
  • CPVT solar collectors
  • renewable energy systems
  • integration of PVT and CPVT technologies
  • performance evaluation and optimization
  • economic and environmental assessments
  • solar energy conversion

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Published Papers (3 papers)

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Research

23 pages, 9717 KiB  
Article
A Smart Heating System Based on Integrated Renewable Energy Sources for Swine Nursery Buildings
by Stefano Benni, Carlos Alejandro Perez Garcia, Marco Bovo, Alberto Barbaresi, Francesco Tinti, Alexander Loris, Iván P. Acosta-Pazmiño, Panteleimon Bakalis, Patrizia Tassinari and Daniele Torreggiani
Energies 2025, 18(6), 1393; https://doi.org/10.3390/en18061393 - 12 Mar 2025
Viewed by 482
Abstract
The control of environmental parameters in livestock farming is essential to achieve optimal ranges of temperature and humidity. HVAC systems for this purpose are characterized by high energy demands, causing significant GHG emissions when relying on fossil fuels. The aim of this study [...] Read more.
The control of environmental parameters in livestock farming is essential to achieve optimal ranges of temperature and humidity. HVAC systems for this purpose are characterized by high energy demands, causing significant GHG emissions when relying on fossil fuels. The aim of this study is the development and testing of a sustainable heating system for a nursery barn hosting 2500 weaners, as well as the assessment of the effectiveness and the performance of the new system. This work involved the implementation of a renewable energy source (RES) system incorporating a borehole thermal energy storage and photovoltaic thermal collectors, integrated with a Dual-Source Heat Pump. A smart control system was installed and the collected data were processed to define the optimal settings of the integrated plant for energy production and efficiency. The performance in terms of the control of the environmental conditions of the nursery barn was assessed on the basis of the environmental parameters analyzed, with particular reference to the animal-occupied zones. The results showed that a mix of RESs can be properly defined and integrated in an automated heating system to meet the specific requirements of a swine farm, thanks to a project specifically designed to exploit the renewable resources typically available in farming environments. Full article
(This article belongs to the Special Issue Photovoltaic-Thermal (PVT) and Concentrated Photovoltaic-Thermal (CPVT) Solar Collectors)
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16 pages, 3529 KiB  
Article
Iterative Optimization of PV/T Microchannel Structure Based on Non-Uniform Parallel Arrangement
by Bing Hong, Zhigang Zhou, Xuewei Song, Jie Yao, Xinye Wang, Wenqiang Geng and Xiaolian Su
Energies 2025, 18(4), 807; https://doi.org/10.3390/en18040807 - 9 Feb 2025
Viewed by 599
Abstract
The traditional uniform parallel microchannel structure in PV/T system results in the formation of high-temperature zones in a silicon cell. This paper proposes using the iterative optimization to change the uniform arrangement of microchannel width to a non-uniform arrangement, making the temperature distribution [...] Read more.
The traditional uniform parallel microchannel structure in PV/T system results in the formation of high-temperature zones in a silicon cell. This paper proposes using the iterative optimization to change the uniform arrangement of microchannel width to a non-uniform arrangement, making the temperature distribution more uniform. A vertical Z-shape structure is selected as the optimization object for its relatively good performance. Its middle path resistance is high, resulting in a high-temperature zone in the middle-upper part of a silicon cell. Three characteristic parameters are compared to select the optimal monitored variable for the iterative calculations. Specific flow rate is found to be the best characteristic parameter, followed by flow rate, while flow velocity cannot be used for iteration. The optimization significantly improves the uniformity of temperature distribution in the silicon cell. The air layer further enhances the performance of the PV/T system, with a thickness of 7 mm being optimal. At the ambient temperature from −15 °C to 40 °C, the outlet water temperature ranges from 37.7 °C to 53.7 °C, and the overall efficiency ranges from 40.8% to 73.0%, showing good application potential. Full article
(This article belongs to the Special Issue Photovoltaic-Thermal (PVT) and Concentrated Photovoltaic-Thermal (CPVT) Solar Collectors)
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21 pages, 7615 KiB  
Article
Photovoltaic-Thermal Side-Absorption Concentrated Module with Micro-Structures as Spectrum-Division Component for a Hybrid-Collecting Reflection Solar System
by Jyh-Rou Sze and An-Chi Wei
Energies 2025, 18(3), 546; https://doi.org/10.3390/en18030546 - 24 Jan 2025
Viewed by 565
Abstract
A photovoltaic-thermal side-absorption concentrated module (PT-SACM) based on spectrum division for photovoltaic-thermal hybrid applications is carried out. In order to reduce the absorption by materials and the axial-chromatic aberration caused by the transmissive optical system and to improve the performance of the entire [...] Read more.
A photovoltaic-thermal side-absorption concentrated module (PT-SACM) based on spectrum division for photovoltaic-thermal hybrid applications is carried out. In order to reduce the absorption by materials and the axial-chromatic aberration caused by the transmissive optical system and to improve the performance of the entire system, a reflective system, the parabolic mirror array, fabricated by the ultra-precision diamond turning technology, is proposed herein. For the purposes of spectrum division, thinner volume, lightweight, and wide acceptance angle, the proposed module is designed with a diffraction optical element (DOE), a light-guide plate with a micro-structure array and a parabolic mirror array. Among them, the DOE can separate the solar spectrum into the visible band, which is converted to electrical energy via photovoltaics, and the infrared band, whose thermal energy is collected. Experimental measurements show that the overall optical efficiency of the entire system reached 38.32%, while a deviation percentage of 3.5% is calculated based on the simulation. The system has successfully demonstrated the separation of visible and infrared bands of the solar spectrum. Meanwhile, the lateral displacement between the micro-structures of the light-guide plate and the focus of the parabolic mirror array can be used to compensate for the angular deviation of the sun incidence, thereby achieving wide-angle acceptance via the proposed solar concentration system. Full article
(This article belongs to the Special Issue Photovoltaic-Thermal (PVT) and Concentrated Photovoltaic-Thermal (CPVT) Solar Collectors)
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