Advances in liquid based photovoltaic/thermal (PV/T) collectors

Daghigh, Roonak; Ruslan, Mohd Hafidz; Sopian, Kamaruzzaman

doi:10.1016/j.rser.2011.07.028

Cited by 154 publications

(50 citation statements)

References 61 publications

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“…The electrical efficiency of the triple-junction PV (η PV ) is experimentally related to the concentration ratio and to the temperature [14]: (11) Note that this equation returns ultra-high values of electrical efficiency, also approaching 40%, as usual in III-V PV cells. The IAM el is also evaluated on the basis of the experimental data provided by Bernardo et al [24,28]: (12) The net power produced by the system is reduced of the amount of electricity lost in the module connections and in the inverter, considering the corresponding efficiencies (η mod and η inv ) [14]: …”

Section: Cpvt Simulation Modelmentioning

confidence: 99%

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Parabolic Trough Photovoltaic/Thermal Collectors: Design and Simulation Model

Calise

Vanoli

2012

Energies

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This paper presents a design procedure and a simulation model of a novel concentrating PVT collector. The layout of the PVT system under investigation was derived from a prototype recently presented in literature and commercially available. The prototype consisted in a parabolic trough concentrator and a linear triangular receiver. In that prototype, the bottom surfaces of the receiver are equipped with mono-crystalline silicon cells whereas the top surface is covered by an absorbing surface. The aperture area of the parabola was covered by a glass in order to improve the thermal efficiency of the system. In the modified version of the collector considered in this paper, two changes are implemented: the cover glass was eliminated and the mono-crystalline silicon cells were replaced by triple-junction cells. In order to analyze PVT performance, a detailed mathematical model was implemented. This model is based on zero-dimensional energy balances. The simulation model calculates the temperatures of the main components of the system and the main energy flows Results showed that the performance of the system is excellent even when the fluid temperature is very high (>100 °C). Conversely, both electrical and thermal efficiencies dramatically decrease when the incident beam radiation decreases.

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Section: Cpvt Simulation Modelmentioning

confidence: 99%

“…Although the basic idea of the PVT was developed about 40 years ago, this product is still far from mature commercialization [10]. Thus, several researchers are investigating several novel PVT arrangements [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Parabolic Trough Photovoltaic/Thermal Collectors: Design and Simulation Model

Calise

Vanoli

2012

Energies

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“…It is feasible to make further use of the absorbed heat through a heat pump for one or more of the following purposes, i.e. hot water supply [23][24][25], space heating [26,27], solar cooling [28,29], thermal storage [30], desalination [31], drying [32,33] and pool heating [34,35] etc. Electricity generation from the PV cells, either exported to the national grid or stored in batteries, will meet the electrical load or drive the system component, i.e.…”

Section: Flat-plate Pv/t Modulesmentioning

confidence: 99%

A review of thermal absorbers and their integration methods for the combined solar photovoltaic/thermal (PV/T) modules

Zhang

Shen

et al. 2017

Renewable and Sustainable Energy Reviews

117

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Thermal absorbers and their integration methods are critical to solar photovoltaic/thermal (PV/T) modules. These two elements directly influence the cooling effort of PV layers and as a result, the related electrical/ thermal/overall efficiency. This paper conducts a critical review on the essential thermal absorbers and their integration methods for the currently-available PV modules for the purpose of producing the combined PV/T modules. A brief overview of different PV/T technologies is initially summarized, including aspects of their structure, efficiencies, thermal governing expressions and their applications. Seven different types of thermal absorbers and four corresponding integration methods are subsequently discussed and summarized in terms of their advantages/disadvantages and the associated application for various PV/T modules. Compared to traditional thermal absorbers, such as sheet-and-tube structure, rectangular tunnel with or without fins/ grooves and flat-plate tube, these four types, i.e. microchannel heat pipe array/heat mat, extruded heat exchanger, roll-bond heat exchanger and cotton wick structure, are promising due to the significant enhancement in terms of efficiency, structure, weight, and cost etc. The appropriate or suitable integration method varies in different cases, i.e. the ethylene-vinyl acetate (EVA) based lamination method seems the best option for integration of PV layer with thermal absorber when compared with other conventional methods, such as direct contact, thermal adhesive and mechanical fixing. Finally, suggestions for further research topics are proposed from five aspects. The overall research results would provide useful information for the assistance of further development of solar PV/T modules with high feasibility for widespread application in energy supply even at district or city-level in the near future.

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“…Due to its superior performance over traditional PV or thermal collector, the PVT technology has received a great deal of attention over years as demonstrated by many recent review works [8][9][10][11]. Advanced design of the absorber plate [9], development of concentrator-type PVT [11], integration with heat pumps [8] and integration with the building envelope [10] are generally recommended as the directions where research efforts have to be focused to reduce the PVT collector losses and pushing the overall efficiency to the highest value. The use of a liquid coolant such as water guarantees a more uniform temperature of the PV cells compared to the adoption of air and the highest efficiencies [12].…”

Section: Introductionmentioning

confidence: 99%