A miniature concentrating photovoltaic and thermal system

Kribus, Abraham; Kaftori, Daniel; Mittelman, Gur; Hirshfeld, Amir; Flitsanov, Yuri; Dayan, Abraham

doi:10.1016/j.enconman.2006.01.013

Cited by 173 publications

(88 citation statements)

References 4 publications

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“…If a conventional silicon PV layer had been considered, the electrical efficiency would have dramatically reduced. A possible alternative to the CPVT layout discussed in this paper may consist in a thermal insulation of the top surface of the receiver [19]. This arrangement could reduce thermal losses but would also reduce the radiative heat absorbed by that surface.…”

Section: Resultsmentioning

confidence: 99%

“…In this case, the primary side of the heat exchanger is at constant temperature equal to the temperature of the metallic substrate. This assumption can be considered acceptable as a consequence of the high thermal conductivity of the metallic substrate [14,18,19,24,28] and allows one to develop a 0-D model of the CPVT. According to the 0-D approach here implemented, the performance of the heat exchanger can be calculated using the well-known -NTU technique [36].…”

Section: Cpvt Simulation Modelmentioning

confidence: 99%

“…Equations (15) and (19)(20)(21)(22) represent a system of five equations in the above mentioned five unknowns. This system of equations is highly non-linear as a consequence of the radiative terms included in the energy balances and of the correlations for the calculations of heat transfer coefficients.…”

Section: Cpvt Simulation Modelmentioning

confidence: 99%

“…CPVT design parameters are reported in Table 1 [14,18,19,24,28]. For the design parameters assumed in this table, the concentration ratio is 10.…”

Section: Cpvt Simulation Modelmentioning

confidence: 99%

“…Similarly, the availability of theoretical and experimental studies investigating CPVT performance is scarce. In particular, Mittelman et al [14,18,19] performed some experimental and theoretical works dealing with CPVT systems. In reference [19] presented a novel miniature CPVT based on a dish concentrator (0.95 m 2 ) and a silicon PV cell.…”

Section: Introductionmentioning

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: Resultsmentioning

confidence: 99%

Section: Cpvt Simulation Modelmentioning

confidence: 99%

Section: Cpvt Simulation Modelmentioning

confidence: 99%

“…CPVT design parameters are reported in Table 1 [14,18,19,24,28]. For the design parameters assumed in this table, the concentration ratio is 10.…”

Section: Cpvt Simulation Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Parabolic Trough Photovoltaic/Thermal Collectors: Design and Simulation Model

Calise

Vanoli

2012

Energies

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Solar radiation transfer and performance analysis for a low concentrating photovoltaic/thermal system

Zhao

Wang

et al. 2015

Env Prog and Sustain Energy

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In this study, we investigated a concentrating solar photovoltaic/thermal system that uses solar radiation in the visible and infrared ranges separately. In this system, photoelectric and photothermal conversions are achieved independently via the thermal unit and the photovoltaic (PV) module, respectively. The operation of the thermal unit is not affected by temperature limitations imposed by the PV module. The results indicate that water as the working fluid in the thermal unit directly absorbs 33% of the solar radiation. When the mass flow rate was reduced, the water temperature at the thermal unit outlet increased; however, both the temperature and the electrical efficiency of the solar cell remained constant. When the solar radiation increased from 640 to 3200 W/m2, the concentrating photovoltaic/thermal (CPV/T) system produced high‐grade heat with an only 1.4% drop in electrical efficiency. Moreover, the exergetic efficiency of the CPV/T system increased with increasing incident solar irradiance. © 2015 American Institute of Chemical Engineers Environ Prog, 35: 263–270, 2016

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Thermal analysis of parabolic trough concentration photovoltaic/thermal system for using in buildings

Alayi

Kasaeian

Atabi

2019

Env Prog and Sustain Energy

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In this research, a parabolic trough concentrating photovoltaic thermal (CPVT) was used to provide the energy needed for a residential building. In order to do this, the required amount of heating and cooling and electrical energy was first obtained using Carrier software, then the electrical demand was obtained according to the standard model and governing relations. In the next step, the CPVT as a source of heat and cooling, and electrical energy for the building, was simulated in TRNSYS software. In order to achieve the highest reliability in terms of heat supply and reduction of thermal losses in the whole system, phase‐change material was used as a heat storage source. Mehrabad (Tehran) was considered as the target area in simulation. For this area the highest radiation intensity is 7.79 kWh/m2·day, which shows the potential of the region. The simulation results of the studied system showed that the highest output temperature and solar fraction for total load in building from CPVT was 150°C and 0.0.2926. © 2019 American Institute of Chemical Engineers Environ Prog, 38: e13220, 2019

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A miniature concentrating photovoltaic and thermal system

Cited by 173 publications

References 4 publications

Parabolic Trough Photovoltaic/Thermal Collectors: Design and Simulation Model

Parabolic Trough Photovoltaic/Thermal Collectors: Design and Simulation Model

Solar radiation transfer and performance analysis for a low concentrating photovoltaic/thermal system

Thermal analysis of parabolic trough concentration photovoltaic/thermal system for using in buildings

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