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Optical Design of a Solar Parabolic Concentrating Collector Based on Trapezoidal Reflective Petals



Author(s)

Saša Pavlović¹, Velimir Stefanović¹, Darko Vasiljević² and Emina Petrović³

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DOI:10.17265/1934-8975/2015.08.004

1. Thermal Engineering Department, Faculty of Mechanical Engineering University of Nis, Niš 18000, Serbiab
2. Institute of Physics, Photonics Center, Belgrade 11080, Serbia
3. Mechatronic and Control System, Faculty of Mechanical Engineering University of Nis, Niš 18000, Serbia

In this paper, detailed optical of the solar parabolic dish concentrator is presented. The system has diameter D = 2,800 mm and focal length f = 1,400 mm. The efficient conversion of solar radiation in heat at these temperature levels requires a use of concentrating solar collectors. In this paper, detailed optical design of the solar parabolic dish concentrator is presented. The parabolic dish of the solar system consists from 12 curvilinear trapezoidal reflective petals. This paper presents optical simulations of the parabolic solar concentrator unit using the ray-tracing software TracePro. The total flux on receiver and the distribution of irradiance for absorbed flux on center and periphery receiver are given. The total flux at the focal region is 4,031.3 W. The goal of this paper is to present optical design of a low-tech solar concentrator, that can be used as a potentially low-cost tool for laboratory-scale research on the medium-temperature thermal processes, cooling, industrial processes, solar cooking and polygeneration systems, etc.

Solar parabolic dish concentrator, optical analysis, solar energy, solar radiation.