Design and experimental evaluation of a parabolic-trough concentrating photovoltaic/thermal (CPVT) system with high-efficiency cooling

Karathanassis, Ioannis K.; Papanicolaou, E.; Belessiotis, V.; Bergeles, G.

doi:10.1016/j.renene.2016.09.013

Cited by 80 publications

(34 citation statements)

References 40 publications

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“…The thermal, electrical and total efficiencies of the proposed system are compared with those obtained by different related studies [33][34][35][36][37][38][39][40]. Commonly, every system has own advantages and disadvantages compared with other systems but the main goal is to increase the electrical and thermal efficiency without more increasing in the total cost of the system.…”

Section: Comparison Validationmentioning

confidence: 99%

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Sizing Methodology of a Multi-Mirror Solar Concentrated Hybrid PV/Thermal System

et al. 2018

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The use of a concentrated photovoltaic (CPV) system significantly reduces the required solar cell area that often accounts for the major cost of a PV solar system. A comprehensive performance analysis of a multi-mirror solar concentrated hybrid PV thermal (CPVT) system was conducted. Among different concentrating systems, Linear Fresnel Reflector (LFR) systems are more effective due to their simplicity of operation and low fabrication cost. A mathematical model and the simulation of a CPVT system employing a linear configuration and horizontal absorber is developed here in order to evaluate its performance parameters, using a FORTRAN programing technique. The concentrator system consists of, different width of flat glass mirrors placed under various inclination angles, focusing sunlight on to the PV solar cells mounted along the active cooling system. The effect of focus distance on concentration ratio, collector width, and heat gained by the coolant fluid are investigated. All parameters of the linear Fresnel reflector solar concentrator system are determined and the effect of cooling mass flow rate and cooling inlet temperature upon the system performance is evaluated. With regards to simulation results obtained via the focus distances, the width of mirrors decreased by increasing the number of mirrors, and in turn by increasing the focus distances, this resulted in an increase in CR values. For the specific number of mirrors, concentration ratio increased simultaneously increasing the focus distance; furthermore, increasing the number of mirrors resulted in a reduction in both the width of the mirrors and their inclination angles, and an increase in CR values. The results further confirmed that the total (combined electrical-thermal) efficiency is higher than that of the individual electrical as well as thermal efficiency; reaching approximately 80% and showed no sensitivity to the rises in cooling water temperature for temperature cases under consideration.

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Section: Comparison Validationmentioning

confidence: 99%

“…For calculation purposes, these equations can be simplified as in Equations (34) and (35) respectively:…”

Section: Of 28mentioning

confidence: 99%

Sizing Methodology of a Multi-Mirror Solar Concentrated Hybrid PV/Thermal System

et al. 2018

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“…According to results last scheme is much efficient in terms of overall energy and exergy yield. Karathanassis et al (2017) build parabolic-trough CHPV/T collector with a rotating axis. System is observed to reach approximately 50% overall energy.…”

Section: General Overview Of Hpv/t Collectorsmentioning

confidence: 99%

Hybrid Photovoltaic/Thermal (HPV/T) Systems: From Theory to Applications

Cüce¹,

Oztekin²,

Cuce³

2018

Energy Research Journal

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Hybrid photovoltaic/ thermal systems are very promising clean energy harvesting devices where they can be used either standalone system or can be incorporated with other systems. In this study, historical developments leading to current Hybrid Photovoltaic/Thermal (HPV/T) systems as it is used today and global findings to enhance the performance of HPV/T system through state-of-the-art analyses are presented in a thematic way. The findings from initial studies on the HPV/T systems is revealed in an historical way and rest of sections are formed based on selected criteria. The paper covers basic and advanced type collectors, working fluids, analyzing methods to assess performance, thermodynamic approaches, optimization of design parameters and mass flow rates, techniques to enhance performance and comparative studies. Especially, various parametric studies to optimize performance of the HPV/T with respect to selected parameters including different types of absorbers, packing factor, cooling schemes, working fluid types, modifications at different sections of the system are comprehensively investigated. Based on the conclusions, the variation in electrical and thermal efficiencies are mainly in the scope of this study. It is observed from the literature that solar HPV/T system has a great potential to be one of the up and coming clean energy technology.

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“…Due to the Thomson effect in the TEG module, the output power of the PV, TE and PV‐TEG decreased. In 2017, Karathanssis et al designed and evaluated a parabolic‐trough CPVT system with high‐efficiency cooling. In 2017, Baljit et al mathematically modeled a dual‐fluid CPVT solar collector.…”

Section: Introductionmentioning

confidence: 99%

Optical modeling and optimization of parabolic trough concentration photovoltaic/thermal system

Alayi

Kasaeian

Atabi

2019

Env Prog and Sustain Energy

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In this research, a genetic algorithm has been used to optimize the focal area of the parabolic trough concentration photovoltaic/thermal. First, based on the physical and thermodynamic variables, the system modeling was performed; then, by changing the variables were calculated the effect of these parameters on the electrical and thermal efficiencies. In the next step, the optimization was conducted by the mentioned algorithms. The objective function consists of two targets of electrical efficiency combined with thermal efficiency. The optimization variables include the length of the system, the pipe diameter, the collector diameter, mass flow rate, and the photovoltaic cell width. After running the program in the normal mode, the highest electrical and thermal efficiencies were 0.2063 and 0.4473 for the length of 10 m, the collector diameter of 1.2 m, the flow rate of 0.15 kg/s, the pipe diameter of 0.03 m, and the photovoltaic cell width of 0.02 m. According to the genetic algorithm, the optimal answer for the total efficiency of this system is 0.84737.

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Design and experimental evaluation of a parabolic-trough concentrating photovoltaic/thermal (CPVT) system with high-efficiency cooling

Cited by 80 publications

References 40 publications

Sizing Methodology of a Multi-Mirror Solar Concentrated Hybrid PV/Thermal System

Sizing Methodology of a Multi-Mirror Solar Concentrated Hybrid PV/Thermal System

Hybrid Photovoltaic/Thermal (HPV/T) Systems: From Theory to Applications

Optical modeling and optimization of parabolic trough concentration photovoltaic/thermal system

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