Development of an Elevation-Fresnel Linked Mini-Heliostat Array


Por: Moreno-Cruz, Isafas, Carlos Castro, Juan, Alvarez-Brito, Omar, Mota-Nava, Hilda B., Ramirez-Zuniga, Guillermo, Quinones-Aguilar, Jose J., Arancibia-Bulnes, Camilo A.

Publicada: 1 ago 2020
Resumen:
Heliostats are critical components of solar tower technology and different strategies have been proposed to reduce their costs; among them diminishing their size to reduce wind loads or linking nearby heliostats mechanically, to reduce the overall number of actuators. This document aims to describe the development of a linked array of mini-heliostats which move together in an elevation-Fresnel configuration. This configuration consists of an array of mirrors rotating around linked parallel axes, in a linear Fresnel style with an added elevation mechanism allowing all axes to incline simultaneously in the plane North-South-Zenith; that is equivalent to an array of N linked mini-heliostats moved by only two drives instead of 2N. A detailed analytical study of the Sun-tracking performance of this kind of heliostat arrays was carried out, and an 8-mirror prototype based on optical and mechanical analyses was designed, built and tested. Even though the mirrors are flat, the array produced a rather compact radiative flux distribution on the receiver. The flux distribution is compatible with a slope error of the order of 1 mrad.Peak and mean concentration ratios reached 6.89 and 3.94, respectively.

Filiaciones:
Moreno-Cruz, Isafas:
 Univ Nacl Autonoma Mexico, Inst Energias Renovables, Colonia Ctr, Privada Xochicalco S-N, Temixco, Morelos 62580, Mexico

Carlos Castro, Juan:
 Univ Nacl Autonoma Mexico, Inst Energias Renovables, Colonia Ctr, Privada Xochicalco S-N, Temixco, Morelos 62580, Mexico

 Gadgets & Design SA CV, Perifer Sur 4302-105, Mexico City 04500, DF, Mexico

Alvarez-Brito, Omar:
 Gadgets & Design SA CV, Perifer Sur 4302-105, Mexico City 04500, DF, Mexico

Mota-Nava, Hilda B.:
 Gadgets & Design SA CV, Perifer Sur 4302-105, Mexico City 04500, DF, Mexico

Ramirez-Zuniga, Guillermo:
 Univ Nacl Autonoma Mexico, Inst Energias Renovables, Colonia Ctr, Privada Xochicalco S-N, Temixco, Morelos 62580, Mexico

 Univ Tecnol Emiliano Zapata Estado Morelos, Div Acad Mecan Ind, Ave Univ Tecnol 1, Emiliano Zapata 62760, Morelos, Mexico

Quinones-Aguilar, Jose J.:
 Univ Nacl Autonoma Mexico, Inst Energias Renovables, Colonia Ctr, Privada Xochicalco S-N, Temixco, Morelos 62580, Mexico

Arancibia-Bulnes, Camilo A.:
 Univ Nacl Autonoma Mexico, Inst Energias Renovables, Colonia Ctr, Privada Xochicalco S-N, Temixco, Morelos 62580, Mexico
ISSN: 19961073
Editorial
MDPI AG, ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND, Suiza
Tipo de documento: Article
Volumen: 13 Número: 15
Páginas:
WOS Id: 000559161300001
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