Experimental performance of an ultra-low-cost solar photovoltaic-thermal (PVT) collector using aluminum minichannels and nonimaging optics

Widyolar, Bennett; Brinkley, Jordyn; Hota, Sai Kiran; Ferry, Jonathan; Dı́az, Gerardo; Winston, R.

doi:10.1016/j.apenergy.2020.114894

Cited by 63 publications

(15 citation statements)

References 43 publications

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“…Hence, the desired electric power rating of the PV module can be obtained using the required number of PV cells. The PV cell can be modeled in an equivalent electrical circuit, which is shown in Figure 3 [31,32]. Using Kirchhoff's law, the PV current is determined as:…”

Section: Pv Generatormentioning

confidence: 99%

Photovoltaic-Battery-Ultracapacitor-Diesel Hybrid Generation System for Mobile Hospital Energy Supply

et al. 2022

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This paper deals with the energy management of a hybrid power system, which consists of a photovoltaic (PV) system, diesel generators, battery, and ultracapacitor for a mobile hospital. The proposed power system can supply energy to shelter hospitals for better treatment of patients in remote states, particularly in the event of a pandemic situation such as Coronavirus Disease 2019 (COVID-19). For this reason, a hybrid power system in which a diesel generator is used with a photovoltaic energy source for reliable availability of power supply. Moreover, battery and ultracapacitor are also integrated to obtain a hybrid power generation and storage system to ensure the smooth operation of mobile hospitals irrespective of weather conditions. A boost converter is used with PV panels to operate them in either maximum power tracking mode or power curtailment mode. The battery is connected to a bidirectional reversible DC-DC converter for direct-current (DC) bus voltage regulation and state of charge control. The ultracapacitor is associated with the battery to compensate for the peak power. The diesel generator is connected in parallel with the photovoltaic generator, battery, and ultracapacitor to continuously provide the power required by the load. The integrated operation of all generation sources and storage systems is complex for shelter hospitals. Therefore, an efficient energy management algorithm is developed to manage the continuous energy flow between different elements of the hybrid power system and mobile hospital load through the control of the power converters. Finally, validation results are presented to show the effectiveness of the proposed energy management algorithm for the hybrid power system.

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Section: Pv Generatormentioning

confidence: 99%

Photovoltaic-Battery-Ultracapacitor-Diesel Hybrid Generation System for Mobile Hospital Energy Supply

et al. 2022

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“…The value of concentration is especially clear in boosting the temperature at which heat can be extracted from a PVT collector, opening up significant possibilities for concentrating "CPVT" systems [52,53]. Whereas the transmissive "power + light" systems discussed in the previous section are adaptations of high-concentration CPV designs, the most promising concentrating PVT concepts appear to be more inspired by solar thermal collectors, with PV cells integrated into the receiver [54].…”

Section: Pv-thermal Applicationsmentioning

confidence: 99%

The CPV “Toolbox”: New Approaches to Maximizing Solar Resource Utilization with Application-Oriented Concentrator Photovoltaics

2021

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As the scaling of silicon PV cells and module manufacturing has driven solar energy penetration up and costs down, concentrator photovoltaic technologies, originally conceived as a cost-saving measure, have largely been left behind. The loss of market share by CPV is being locked in even as solar energy development encounters significant obstacles related to space constraints in many parts of the world. The inherently higher collection efficiency enabled by the use of concentrators could substantially alleviate these challenges, but the revival of CPV for this purpose requires substantial reinvention of the technology to actually capture the theoretically possible efficiency gains, and to do so at market-friendly costs. This article will discuss recent progress in key areas central to this reinvention, including miniaturization of cells and optics to produce compact, lightweight “micro-CPV” systems; hybridization of CPV with thermal, illumination and other applications to make use of unused energy streams such as diffuse light and waste heat; and the integration of sun-tracking into the CPV module architecture to enable greater light collection and more flexible deployment, including integration into built structures. Applications showing particular promise include thermal applications such as water heating, industrial processes and desalination; agricultural photovoltaics; building-integrated photovoltaics with dynamic daylighting capabilities; and chemical processes including photocatalysis and hydrogen production. By appropriately tailoring systems to the available solar resource and local energy demand, we demonstrate how CPV can finally achieve real-world efficiencies, or solar resource utilization factors, far higher than those of standard silicon-based PV systems. This makes the argument for sustained development of novel CPV designs that can be applied to the real-world settings where this efficiency boost will be most beneficial.

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“…The DX SAHP systems can be mainly divided into two categories: direct expansion evaporator (DXE) based SAHP and photovoltaic/thermal (PVT) based SAHP [19,20]. The direct expansion evaporator could harvest the thermal energy from both solar and air when the ambient temperature is higher than the evaporating temperature.…”

Section: Introductionmentioning

confidence: 99%

Performance improvement of vapor-injection heat pump system by employing PVT collector/evaporator for residential heating in cold climate region

Yao

Zheng

Chen

et al. 2021

Energy

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Experimental performance of an ultra-low-cost solar photovoltaic-thermal (PVT) collector using aluminum minichannels and nonimaging optics

Cited by 63 publications

References 43 publications

Photovoltaic-Battery-Ultracapacitor-Diesel Hybrid Generation System for Mobile Hospital Energy Supply

Photovoltaic-Battery-Ultracapacitor-Diesel Hybrid Generation System for Mobile Hospital Energy Supply

The CPV “Toolbox”: New Approaches to Maximizing Solar Resource Utilization with Application-Oriented Concentrator Photovoltaics

Performance improvement of vapor-injection heat pump system by employing PVT collector/evaporator for residential heating in cold climate region

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