The possibilities of upgrading an existing concentrating solar thermal system — Case study

Papis-Frączek, Karolina; Żołądek, Maciej; Filipowicz, M.

doi:10.1016/j.egyr.2021.05.059

Cited by 2 publications

(1 citation statement)

References 7 publications

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“…The authors in [116] considered the possibility of upgrading an existing CT system into a CPVT installation. The numerical studies with the usage of Ray Tracing and Finite Volume methods allowed them to state that the existing heat receiver (cylinder with an M-shaped internal channel) was suitable for medium-temperature applications and its geometry should be modified to provide lower surface temperature to mount PV cells.…”

Section: Other Designsmentioning

confidence: 99%

A Review on Heat Extraction Devices for CPVT Systems with Active Liquid Cooling

Papis-Frączek

Sornek

2022

Energies

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Numerous numerical and experimental studies have been conducted regarding the Concentrated Photovoltaic Thermal (CPVT) system because of its significant potential for efficient conversion of solar energy. The overall efficiency of the CPVT system is strongly dependent on the device, which extracts excess heat from photovoltaic cells. The most efficient cooling technology involves active cooling, which means that heat is collected from the PV cell via the forced flow of heat transfer fluid. This research paper provides an extensive discussion on devices dedicated to active-cooling CPVT systems, taking into account the latest solutions. First, a short introduction regarding CPVT systems and their main components is presented. The second part of this study presents state-of-the-art solutions in the field of heat extraction devices for the active cooling of photovoltaic cells. The available solutions are classified into two main groups depending on the scale of internal channels: macro- and micro-. Each geometry of the heat receiver is juxtaposed with the corresponding concentrating element, photovoltaic cell, concentration ratio, heat transfer fluid, and operating parameters of the specified system. In addition, this paper discusses the advantages and disadvantages of various devices for heat extraction and provides a comparative study of these devices. Finally, a set of recommendations for CPVT cooling devices is provided.

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Section: Other Designsmentioning

confidence: 99%

A Review on Heat Extraction Devices for CPVT Systems with Active Liquid Cooling

Papis-Frączek

Sornek

2022

Energies

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Development and Tests of the Water Cooling System Dedicated to Photovoltaic Panels

et al. 2022

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Among all the energy production technologies based on renewables, the photovoltaic panels are the ones with the highest rate of development and applications worldwide. In this context, significant efforts are put into research on innovative materials in order to improve the performance of photovoltaic cells. Nevertheless, possibilities available to enhance the energy yield of existing technologies also exist and are explored, such as the cooling of photovoltaic modules. This approach can decrease the mean operation temperature of photovoltaic cells, leading to an increase in efficiency and energy produced. In the present paper, this method is investigated by developing and testing a dedicated water cooling system for photovoltaic panels. In order to investigate the performance of the cooling system, two market-available monocrystalline photovoltaic panels with a power of 50 and 310 Wp were tested under laboratory and real operation conditions, respectively. Based on the results obtained under laboratory conditions, the most promising variant of the cooling system was selected and assessed under real operation conditions. For this system, the maximum temperature of the water-cooled 310 Wp panel was lower by approx. 24 K compared to an uncooled panel, as pointed out by a measurement performed during a typical sunny day when solar irradiation was approximately 850 W/m2. This improvement of the cell temperature led to a 10% increase in power generated by the water-cooled photovoltaic panel compared to the uncooled one. The economic analysis revealed that the estimated simply payback time for installing the cooling system in typical domestic photovoltaic installations can be less than 10 years, while from the point of view of net present value, the introduction of the water cooling system can be a profitable option for a 10-year period when a discount rate of 5% is considered.

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The possibilities of upgrading an existing concentrating solar thermal system — Case study

Cited by 2 publications

References 7 publications

A Review on Heat Extraction Devices for CPVT Systems with Active Liquid Cooling

A Review on Heat Extraction Devices for CPVT Systems with Active Liquid Cooling

Development and Tests of the Water Cooling System Dedicated to Photovoltaic Panels

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