SHADOW, BLOCKAGE AND AREA OF LOSS OF A LINEAR FRESNEL CONCENTRATOR.
SENSITIVITY ANALYSIS
DOI:
https://doi.org/10.59627/cbens.2014.2179Keywords:
Fresnel, shadow, blockage, lossAbstract
The concentrator collectors used in the solar thermal conversion have as main components a reflective surface and an absorber element through which a thermal fluid circulates to be heated by radiation. Among the existing concentrators, solar systems consisting of parabolic cylinders are the most frequently used to generate electrical energy on a large scale. However, costs related to the installation of power plants that use parabolic cylinder hamper competition with other forms of energy production. Alternatively, the Fresnel concentrators have a set of characteristics which offer considerable potential for cost reduction. However, the efficiency of Fresnel concentrator depends on factors such as blockage of the reflected radiation and loss area between mirrors, which attenuate the radiation collected. This article analyzes the areas of shadow, of blockage and of loss between Fresnel concentrators mirrors, and estimates their influences on the system ́s performance.
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