Design aspects of a fixed focus type Scheffler concentrator and its receiver for its utilization in thermal processing units

Bhambare, Parimal S.; Vishweshwara, Sudhir Chitrapady

doi:10.1016/j.nexus.2022.100103

Cited by 4 publications

(1 citation statement)

References 26 publications

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“…This effect is achieved by periodically changing the orientation and profile of a paraboloid calculated for the day of the Equinox [1][2]. There are various articles discussing how to design and build Scheffler mirrors, for the geometric-mechanical aspects [3][4] or considering the mathematical approach [5]. Some examples of applications could be found in the literature, especially for desalination purposes, solar cooking, agriculture [6], and to produce electricity [7,8].…”

Section: Introductionmentioning

confidence: 99%

Design of a Scheffler Mosaic Mirror by Optical Raytracing and CAD Software

Sansoni,

Fontani,

Francini

et al. 2023

SolarPACES Conf Proc

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The Scheffler reflector is a parabolic metal concentrator, typically applied in solar thermal systems with receiver fixed to the ground. The Scheffler mirror is deformed during the year to optimize its solar light collection. For practical reasons it is useful to manufacture such a curve reflector as mosaic mirror. This study develops a configuration of the mosaic mirror type starting from the continuous mirror, trying to indicate how the reflector can be designed. Combining a CAD software tool with raytracing simulations, the optical performance of the Scheffler mosaic mirror is compared with a continuous Scheffler collector. The CAD software reproduces the mechanical deformations of a real Scheffler reflector; while the raytracing software simulates the image that the Scheffler reflector concentrates on the receiver. However, the characteristics of the final composed reflector must be revised depending on the receiver requirements. Moreover, the sizing of the elementary mirrors must be chosen considering the final receiver and it also depends on economic considerations.

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Section: Introductionmentioning

confidence: 99%

Design of a Scheffler Mosaic Mirror by Optical Raytracing and CAD Software

Sansoni,

Fontani,

Francini

et al. 2023

SolarPACES Conf Proc

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Experimental evaluation of the concentrated solar heat flux distribution provided by an 8 m2 Scheffler reflector

Guillet,

Gaspar,

Barbosa

et al. 2024

Renewable Energy

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Design and performance analysis of a Scheffler reflector for ceramic materials sintering

Ouqazzamar,

Zrhaiba,

Assal

et al. 2023

Matériaux & Techniques

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This study aims to identify the factors enhancing the performance of Scheffler parabolic solar concentrators as part of the design of a solar kiln for firing ceramic materials, with a particular emphasis on the crucial role of the concentrator’s concentration factor in reaching the necessary sintering temperature of around 1000 °C. This challenge is addressed through a design methodology employing circular crossbars and rectangular mirrors, simplifying fabrication. The study further involves assessing and comparing concentration factors across multiple configurations, encompassing both traditional parabolic surfaces and rectangular mirrors. Findings indicate that using flat rectangular mirrors with dimensions of approximately (2.5 × 2.5) cm2 achieves performance levels comparable to those attained with parabolic surfaces. The Results also highlight the critical importance of accurately positioning the receiver’s surface to ensure optimal performance. Additionally, the study confirms that increasing the surface area of the dish offers significant advantages for achieving high temperatures.

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Design aspects of a fixed focus type Scheffler concentrator and its receiver for its utilization in thermal processing units

Cited by 4 publications

References 26 publications

Design of a Scheffler Mosaic Mirror by Optical Raytracing and CAD Software

Design of a Scheffler Mosaic Mirror by Optical Raytracing and CAD Software

Experimental evaluation of the concentrated solar heat flux distribution provided by an 8 m2 Scheffler reflector

Design and performance analysis of a Scheffler reflector for ceramic materials sintering

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