Mathematical modeling and numerical simulation of a parabolic trough collector: A case study in thermal engineering

Lamrani, Bilal; Khouya, Ahmed; Zeghmati, Belkacem; Draoui, Abdeslam

doi:10.1016/j.tsep.2018.07.015

Cited by 45 publications

(16 citation statements)

References 15 publications

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“…The thermal properties of working fluid are acquired as: 6 It should be said that the surface temperature of the cavity walls was assumed as 120°C during thermal resistance (14) Q rad,ext = A cavity T 4…”

Section: Andmentioning

confidence: 99%

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Sensitivity analysis of a parabolic trough concentrator with linear V‐shape cavity

Rafiei

Loni

Ahmadi

et al. 2020

Energy Science & Engineering

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Section: Andmentioning

confidence: 99%

“…The application of the storage tank has a low and high influence on the energetic and exergetic aspects of the unit, respectively. Lamrani et al 14 performed a numerical work about the operation of a PTC with thermal oil as the working fluid. The obtained outcomes were validated according to some experimental outcomes.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity analysis of a parabolic trough concentrator with linear V‐shape cavity

Rafiei

Loni

Ahmadi

et al. 2020

Energy Science & Engineering

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“…A model of a classical collector with a concentrating (converging) mirror with a tube absorber in a glass envelope, enabling a transient-state analysis, was presented by Lamrani et al [27]. The collector was fitted with a sun-tracking system.…”

Section: Introductionmentioning

confidence: 99%

Mathematical Model of a Sun-Tracked Parabolic Trough Collector and Its Verification

2020

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The paper presents a one-dimensional distributed parameter model for simulating the transient-state operation of a parabolic trough collector (PTC). The analyzed solar collector has a module design and is equipped with a two-axis sun-tracking system to increase the solar energy yield. The single module is composed of an evacuated tube and a set of parabolic mirrors acting as reflectors. In each of the collector tubes, two aluminum U-tubes are installed, enabling heat intake by the solar fluid. The collector is intended for household applications, as well as other medium thermal energy demand uses. During the numerical model development, appropriate energy balance differential equations are formulated for the collector individual components. The equations are solved using different schemes. As a result, a time- and space-dependent temperature series for each of the collector components and the working fluid are obtained. To select an appropriate time and spatial steps for the developed model and to verify the reliability of the results received, the collector model is also implemented in ANSYS Fluent. The results of the one-dimensional model calculations and comparisons carried out in ANSYS demonstrate considerable agreement. In particular, the values of the fluid temperature at the collector outlet, calculated using the model developed, show high consistency with the ANSYS Fluent results. Furthermore, a preliminary experimental verification of the proposed model is carried out on a test stand currently under construction. The computed and measured temperature course of the fluid at the collector outlet is compared. In this case, the results are also satisfactory.

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“…In another numerical study, a detailed model based on the energy balance at the component level in order to investigate the thermal performance of a PTC in transient climatic conditions was developed and validated by Lamrani et al [17]. They studied the effects of the important parameters such as the mass flow rate of HTF, receiver tube length and fluid type on the thermal performance of a PTC.…”

Section: Introductionmentioning

confidence: 99%

Numerical study of the transparent cover effects with miscellaneous shapes on the parabolic trough solar collector performance

Pourkafi¹,

Ziapour²,

Miroliaei³

2020

International Journal of Thermodynamics

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Optimization of energy production equipment due to significant production cost of each unit of energy is one of the most significant factors for economic development and countries progress. The aim of this work is to improve the efficiency of the parabolic trough collector (PTC) by reducing the heat losses from it. Therefore, it was utilized a PTC with a receiver tube in the focal center of the concentrator that was applied a phase change material (PCM) inside it to store better energy. In the present work, by adding a new section called transparent cover to envelope the PTC, waste of thermal energy from the receiver tube was prevented. The numerical solutions were performed for both summer and winter days. By using of existing formulas, energy and exergy efficiency of the PTC system with different geometrical shapes and heights were obtained and their performance were compared. The results showed that by reducing the height of the covers (i.e. reduction of the space), energy and exergy efficiencies were increased and by providing the triangular cover shape, the system performed better than two others elliptical and rectangular shapes.

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Mathematical modeling and numerical simulation of a parabolic trough collector: A case study in thermal engineering

Cited by 45 publications

References 15 publications

Sensitivity analysis of a parabolic trough concentrator with linear V‐shape cavity

Sensitivity analysis of a parabolic trough concentrator with linear V‐shape cavity

Mathematical Model of a Sun-Tracked Parabolic Trough Collector and Its Verification

Numerical study of the transparent cover effects with miscellaneous shapes on the parabolic trough solar collector performance

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