OPTICAL MODEL AND NUMERICAL SIMULATION OF THE NEW OFFSET TYPE PARABOLIC CONCENTRATOR WITH TWO TYPES OF SOLAR RECEIVERS

The paper presents a physical and mathematical model of the new offset type parabolic concentrator and a numerical procedure for predicting its optical performances. Also presented is the process of design and optical ray tracing analysis of a low cost solar concentrator for medium temperature applications. This study develops and applies a new mathematical model for estimating the intercept factor of the solar concentrator based on its geometrical and optical behavior. The solar concentrating system consists of three offset parabolic dish reflectors and a solar thermal absorber at the focus. Two types of absorbers are discussed. One is a flat plate circular absorber and the other a spiral smooth pipe absorber. The simulation results could serve as a useful reference for design and optimization of offset parabolic concentrators.

[1]  L. RafaelE.Cabanillas,et al.  Measuring Energy Efficiency From a 4 Kw Dish Concentrator System Using Older Parabolic Antenna Technology , 2008 .

[2]  M. Bayray,et al.  Performance Investigation of Offset Parabolic Solar Cooker for Rural Applications , 2014 .

[3]  Steffen Ulmer,et al.  Detailed Performance Analysis of a 10kW Dish∕Stirling System , 2008 .

[4]  Nadir Bellel,et al.  Study of two types of cylindrical absorber of a spherical concentrator , 2011 .

[5]  Ramchandra S. Jahagirdar,et al.  EXPERIMENTAL INVESTIGATION OF HEAT LOSS FROM HEMISPHERICAL SOLAR CONCENTRATOR RECEIVER , 2012 .

[6]  J. Rapp.  Construction and Improvement of a Scheffler Reflector and Thermal Storage Device , 2010 .

[7]  Kurt Sacksteder,et al.  Solar Concentrator Concept for Providing Direct Solar Energy for Oxygen Production at the Lunar South Pole , 2010 .

[8]  Javier Diz-Bugarin,et al.  Design and Construction of a Low Cost Offset Parabolic Solar Concentrator for Solar Cooking in Rural Areas , 2011 .

[9]  Vincent H. Wilson,et al.  DESIGN AND THERMAL PERFORMANCE OF THE SOLAR BIOMASS HYBRID DRYER FOR CASHEW DRYING , 2014 .

[10]  O. Hensel,et al.  Design principle and calculations of a Scheffler fixed focus concentrator for medium temperature applications , 2010 .

[11]  José Ruelas,et al.  Ray Tracing Study to Determine the Characteristics of the Solar Image in the Receiver for a Scheffler-type Solar Concentrator Coupled with a Stirling Engine , 2014 .

[12]  V. Stefanović,et al.  DEVELOPMENT OF MATHEMATICAL MODEL OF OFFSET TYPE SOLAR PARABOLIC CONCENTRATING , 2016 .

[13]  Anjum Munir,et al.  Design, development and modeling of a solar distillation system for the processing of medicinal and aromatic plants , 2010 .