Performance of see-through prism CPV module for window integrated photovoltaics

Yamada, Noboru; Kanno, Kosuke; Hayashi, Kentaro; Tokimitsu, Toru

doi:10.1364/oe.19.00a649

Cited by 19 publications

(6 citation statements)

References 12 publications

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“…Building-Integrated Photovoltaic (BIPV) systems address these goals perfectly. Among BIPV technologies, Building-Integrated Concentrating Photovoltaic (BICPV) systems possess additional features that make them particularly interesting for building integration, such as the possibility of heat generation [2], or daylight regulation [3]. Also the replacement of expensive semi-conductor cell area by cheaper and more environmentally friendly concentrating optics can make for a more viable system in terms of both cost and environment [4].…”

Section: Introductionmentioning

confidence: 99%

Impact of shading on a flat CPV system for façade integration

Bunthof¹,

Kreuwel²,

Kaldenhoven³

et al. 2016

Solar Energy

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Recently adopted energy efficiency policies in the EU induce a movement towards energy-neutral buildings. Building integrated photovoltaics technology connects with this ambition, as aside from the generation of electrical energy, it allows additional benefits such as heat generation, or daylight regulation by transmission of diffuse sunlight through transparent parts of the system. In this study three Concentrator Photocoltaic (CPV) system configurations that allow for the construction of semi-transparent building façade elements are investigated outdoor. The systems are a Fresnel lens based concentrator, a novel flat planar optic concentrator, and a 4x4 panel of these flat optics. The flat optic has no air cavity to account for optical focal depth which is highly beneficial when incorporated in a window. In particular the energy production of the systems when partially shaded is investigated, as adjoining systems will move behind one another during sun tracking, because the optics spacing must be small to achieve good daylight regulation. The planar optic concentrator is found to display similar performance as a Fresnel lens based concentrator of similar concentration. For a multi-receiver panel, shading introduces a loss of performance ranging from 7 to 12% which is attributed to electrical interconnection as individual receivers do not suffer this loss.

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Section: Introductionmentioning

confidence: 99%

Impact of shading on a flat CPV system for façade integration

Bunthof¹,

Kreuwel²,

Kaldenhoven³

et al. 2016

Solar Energy

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“…The combination of CPV and daylighting is already investigated and in literature approaches of coupling light into optical fiber bundles which can be used for direct daylighting or CPV power generation are described [13]. For windows and glazing the approach of using (micro) prism structures for a more efficient distribution of sunlight is well known [14] and the advantage of integrated CPV functions has been shown [15]. Thus the intrinsic disadvantage of CPV, of the low angular acceptance can be used in passive daylight designs.…”

Section: Discussionmentioning

confidence: 99%

CPV membranes made by roll-to-roll printing: A feasible approach?

Leiner¹,

Sommer²,

Satzinger³

et al. 2016

AIP Conference Proceedings

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Abstract. In the recent 15 years photovoltaics has become a mature technology and covers significant electricity demands in many industrialized countries. CPV still has the potential to be the most cost-competitive technology for photovoltaic power plant applications in sun-rich regions. However, the advantages of larger manufacturing scale of flatplate modules caused troubles for CPV producers in competing with standard photovoltaic technologies. Similar is true for other alternative (or emerging) photovoltaic such as printed and flexible photovoltaic foils which can be produced at low cost in a roll-to-roll process. In this paper we present an approach to realize a flexible CPV membrane technology and investigate the technical feasibility of the approach by applying raytracing simulations and discuss potential applications of the approach. It is calculated that up to 78% of the incident sunrays can contribute to the photocurrent. On possible application of CPV membranes is found to be daylight management of buildings. In particular the membranes can be attached into or onto glazing or windows in order to improve the passive daylighting and harvest solar energy. In a second approach, the CPV membranes can be retrofitted onto existing solar-thermal collectors in order to improve their functionality without scarifying the thermal heat generation in winter time.

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“…Planar optical elements include diffused reflector (Kim & Dutta, 2012), holographic film (Kasezawa et al, 2016) and Luminescent Solar Concentrator (LSC) (Kerrouche et al, 2014a;Wiegman & Van Der Kolk, 2012). Non-planar optical elements include Fresnel lens (Zhu et al, 2018), wedge prism (Sabry, 2016;Yamada et al, 2011) and Compound Parabolic Concentrator (CPC) (Sellami & Mallick, 2013). CPV systems based on such optical elements are generally designed and optimised using ray-tracing techniques (Baig et al, 2013).…”

Section: Building Integrated Concentrating Photovoltaic Glazingmentioning

confidence: 99%

A review of advanced architectural glazing technologies for solar energy conversion and intelligent daylighting control

Liu

Wu²

2022

ARIN

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Efficient management of solar radiation through architectural glazing is a key strategy for achieving a comfortable indoor environment with minimum energy consumption. Conventional glazing consisting of a single or multiple glass pane(s) exhibits high visible light transmittance and solar heat gain coefficient, which can be a double-edged sword, i.e., it allows sufficient sunlight to enter the building interior space for passive heating and lighting; on the other hand, it can cause glare discomfort and large cooling energy consumption. Among the various advanced glazing technologies being developed, Building Integrated Photovoltaic (BIPV) glazing has a prominent position due to its ability to reduce cooling load and visual discomfort while simultaneously generating electricity from sunlight. Recent years have witnessed remarkable advances in low-concentration optics such as Dielectric based Compound Parabolic Concentrators (DiCPCs), with a growing interest in the development of Building Integrated Concentrating Photovoltaic (BICPV) glazing to improve light harvesting and electric power output. One of the challenges faced by traditional BIPV glazing systems is the lack of dynamic control over daylight and solar heat transmission to cope with variations in weather conditions and seasonal heating/cooling demands of buildings. A promising solution is to integrate an optically switchable smart material into a BIPV glazing system, which enables dynamic daylighting control in addition to solar power conversion. Thermotropic (TT) hydrogel materials such as poly(N-isopropylacrylamide) (PNIPAm) and Hydroxypropyl Cellulose (HPC) are potential candidates for hybrid BIPV smart glazing applications, due to their unique features such as high visible transparency (in the clear state), strong light-scattering capability (in the translucent state) and large solar energy modulation. This paper reviews various types of electricity-generating glazing technologies including BIPV glazing and BICPV glazing, as well as smart glazing technologies with a particular focus on TT hydrogel integrated glazing. The characteristics, benefits and limitations of hybrid BIPV smart glazing are also evaluated. Finally, the challenges and research opportunities in this emerging field are discussed.

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Performance of see-through prism CPV module for window integrated photovoltaics

Cited by 19 publications

References 12 publications

Impact of shading on a flat CPV system for façade integration

Impact of shading on a flat CPV system for façade integration

CPV membranes made by roll-to-roll printing: A feasible approach?

A review of advanced architectural glazing technologies for solar energy conversion and intelligent daylighting control

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