Comparative study of double-pass flat and compound parabolic concentrated photovoltaic–thermal systems with and without fins

Elsafi, Amin M.; Gandhidasan, P.

doi:10.1016/j.enconman.2015.03.084

Cited by 79 publications

(23 citation statements)

References 33 publications

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“…To ensure LCPVs operate efficiently, their cooling is required and the heat removed from solar cells can be used for other thermal applications; such CPC-based PV/T systems were widely investigated in the past [21][22][23]. Recently, Baig et al theoretically and experimentally investigated the performance of a crossed compound parabolic concentrator-based PV system (CCPC) with a thermal extraction unit, and found that such a system had an average electrical efficiency of 10-16% when evaluated at five different locations [24].…”

Section: Introductionmentioning

confidence: 99%

A Three-Dimensional Radiation Transfer Model to Evaluate Performance of Compound Parabolic Concentrator-Based Photovoltaic Systems

Tang

2018

Energies

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Abstract:In the past, two-dimensional radiation transfer models (2-D models) were widely used to investigate the optical performance of linear compound parabolic concentrators (CPCs), in which the radiation transfer on the cross-section of CPC troughs is considered. However, the photovoltaic efficiency of solar cells depends on the real incidence angle instead of the projection incidence angle, thus 2-D models can't reasonably evaluate the photovoltaic performance of CPC-based photovoltaic systems (CPVs). In this work, three-dimensional radiation transfer (3-D model) within CPC-θ a /θ e , the CPC with a maximum exit angle θ e for radiation within its acceptance angle (θ a ), is investigated by means of vector algebra, solar geometry and imaging principle of plane mirror, and effects of geometry of CPV-θ a /θ e on its annual electricity generation are studied. Analysis shows that, as compared to similar photovoltaic (PV) panels, the use of CPCs makes the incident angle of solar rays on solar cells increase thus lowers the photovoltaic conversion efficiency of solar cells. Calculations show that, 2-D models can reasonably predict the optical performance of CPVs, but such models always overestimate the photovoltaic performance of CPVs, and even can't predict the variation trend of annual power output of CPV-θ a /θ e with θ e . Results show that, for full CPV-θ a /θ e with a given θ a , the annual power output increases with θ e first and then comes to a halt as θ e > 83 • , whereas for truncated CPV-θ a /θ e with a given geometric concentration (C t ), the annual power output decreases with θ e .

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Section: Introductionmentioning

confidence: 99%

A Three-Dimensional Radiation Transfer Model to Evaluate Performance of Compound Parabolic Concentrator-Based Photovoltaic Systems

Tang

2018

Energies

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“…Sources [1,2,7,17] also reported an average 6.1±0.4K decrease in PV operation temperature for m rates greater than 0.003kg/s when compared to an m of 0.0012kg/s which is the lowest value any paper provided. This corresponds to a operational lifetime gain of 80% as outlined by X.…”

Section: -Thermal Parametersmentioning

confidence: 99%

“…[16][17][18][19]29] Figure 5. A ray diagram of a CPC, the most important parameter of which is θaccept which determines concentration factor C. [29] …”

Section: Photovoltaic Parameters To Addressmentioning

confidence: 99%

“…This was due to local C values at some points of the system reaching as high as 25 despite average C values being within the range of 2-3 for the entire system, causing local pockets of very high resistance and temperature PV collection. [16][17][18][19][20] It was also determined that between closed and open glass designs, the efficiency gain was minimal for the overall system (usually less than 1%) when using closed glass systems, but in terms of energy profile, it was typically ηPV losing 2±1% for an ηTh gain of 3±1% when implementing closed glass systems. [2,3,7,8] However, the potential ηPV gain of open glass design is not conducive to durable systems as the open glass design accelerates corrosion and requires maintenance to remove debris from the array.…”

Section: -Thermal Parametersmentioning

confidence: 99%

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Optimisation Principles for Photovoltaic/Thermal Hybrid Solar Systems, a Meta Study

Shin

Salcedo

Wang

2018

PAMR

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Photovoltaic/Thermal hybrid (PVT) systems have shown promise as a viable commercial and private source of renewable energy. The purpose of this meta study is to combine contemporary research findings in the area of Photovoltaic (PV) and Photovoltaic/Thermal Hybrid solar systems and attempt to offer general optimisation principles for future PVT devices. Design parameters with which we attempt to optimise through will include PV material choice, CPC inclusion and system temperature optimisation for operational lifetime gain and power yield. It was found that we can combine CPC, closed glass design, spiral web flow and m>0.003kg/s to optimise the c-SI based systems and obtain an overall PVT efficiency gain of 5.5±1.6%, and that mass flow rates exceeding 0.003 kg/s can increase longevity by 80% on average and increase electrical efficiency by 1.2% when compared to conservative lower mass flow rates. Hydrogenated amorphous silicon systems were also deemed to create less high-quality energy and overshooting required thermal needs when using personal/private power statistics as selection criteria.

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“…In evolving the hybrid PV/T fleeting model, the experimental data and theoretical modeling have a good arrangement by typical steady-state current-voltage specific curve [14]. The effects of dissimilar factors like; length, channel penetration, fluid flow rate and packing factor on electrical and thermal performance have been developed by Elsafi et al [15]. The Combination of thermal collector and photovoltaic panel are called PV/T system.…”

Section: Introductionmentioning

confidence: 99%

Photovoltaic Thermal (PVT) System with and Without Fins Collector: Theoretical Approach

Zohri

Nurato

Fudholi

2017

IJPEDS

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The fins collector design for solar thermal has widely been used and it has a higher thermal efficiency than without Fins. Photovoltaic thermal (PV/T) system produced Electrical and thermal energy instantaneously. Mathematical modeling based on steady-state thermal analysis of PV/T system with and without fins was conducted with matrix inversion method. The value results show that the PV/T system with fins collector is higher thermal and electrical efficiency than without fins. Keyword: Electrical INTRODUCTIONThe collector design is greatest vital units of solar collector system or PV/T system to collect heat from solar energy. The use of fins absorber has been conducted widely in the solar collector. Solar collector with two-pass fins have been conducted by Naphon[1] with thermal efficiency is about 30-60%. Fudholi et al. [2] have compared solar collector two-channel with and without fins performance and price welfares analysis. The energy efficiency and cost-effective of two-channel with fins are higher than without fins collector.Taghi et al. [3] have conducted the analysis of heat reaction for point covered topology in the photovoltaic thermal system. The basic idea is the exploit electrical energy through a new point covered topology. The experimental investigation shows that the performance of electrical analysis increases about 10 degrees. Kumari and Babu [4]have compared between theoretical and simulation approach of the photovoltaic cell by Matlab-Simulink Situation. The main of purpose is to catch factor of the nonlinear I-V calculation by modifying the curve at three ideas: open circuit, extreme power, and short circuit. Sharma et al.[5]haveanalyzed the demonstrating and simulation approach of off-grid power generation system by photovoltaic. The objective this research is to confirm steady process during responsibility and numerous network instabilities in network and islanding connected mode. Zohri et al.[6] have analyzed by mathematical modeling of photovoltaic thermal (PVT) with and without a v-groove collector. the energy analysis result displays that performance energy with v-groove is higher than without v-groove collector.The PV/T system has well in the future because of generating both thermal and electrical energy which it's higher dependability and lower ecological impact [7].Thermal application and different types of PV/T system solar collector on basis of physical assortment, scheme condition, and different heat removal

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Comparative study of double-pass flat and compound parabolic concentrated photovoltaic–thermal systems with and without fins

Cited by 79 publications

References 33 publications

A Three-Dimensional Radiation Transfer Model to Evaluate Performance of Compound Parabolic Concentrator-Based Photovoltaic Systems

A Three-Dimensional Radiation Transfer Model to Evaluate Performance of Compound Parabolic Concentrator-Based Photovoltaic Systems

Optimisation Principles for Photovoltaic/Thermal Hybrid Solar Systems, a Meta Study

Photovoltaic Thermal (PVT) System with and Without Fins Collector: Theoretical Approach

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