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Prototype of a simplified polar heliostat suitable for integration in buildings

M. Torres Roldán, M. Varo-Martínez and R. López-Luque

2016/5/20

Abstract

The increasing improvement of energy sustainability entails a raise in the use of heliostats in small applications. These devices aim to use direct radiation as a source of natural lighting, and they are also used as components for concentration systems in thermal and photovoltaic applications. Most technological developments published about heliostats up to now refer to concentration tower thermosolar power plants. Furthermore, they are orientated towards heliostats of big dimensions with large distances between the reflector and the focus. It is different, however, for urban applications, where smaller heliostats and lower distances travelled by reflected rays are proposed, and, consequently, greater errors in solar tracking are allowed.

This paper describes a new simple heliostatic system suitable for small applications. The main feature of this system is the possibility of controlling several heliostats with a unique engine. It must be highlighted that the system proposed uses a simple logic and has an easy electronic controller implementation.

Published in: Renewable Energy & Power Quality Journal (RE&PQJ),Vol. 1, Nº. 14
Pages:542-545 Date of Publication: 2016/5/20
ISSN: 2172-038X Date of Current Version:2016/5/4
REF:385-16 Issue Date: May 2016
DOI:10.24084/repqj14.385 Publisher: EA4EPQ

Authors and affiliations

M. Torres Roldán, M. Varo-Martínez, R. López-Luque
Research Group on Physics for Renewable Energy and Resources. University of Córdoba. Spain

Key words

Heliostat, Building Integrated Heliostats, Concentration Systems, Natural daylighting

References

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