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
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