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Heliostat tailored to Brazil

Pfahl, Andreas and Bezerra, Pedro and Hölle, Erwin and Liedke, Phillip and Teramoto, Erico Tadao and Hertel, Johannes and Lampkowski, Marcelo and Oliveira, L. de (2015) Heliostat tailored to Brazil. In: 2015 ISES Solar World Congress 2015 Conference Proceedings. ISES Solar World Congress 2015, 08.-12. Nov. 2015, Daegu, Korea.

Full text not available from this repository.

Official URL: http://www.swc2015.org/

Abstract

For Brazil it is important to realize a high local production share because of high import tax rates. The rim drive concept offers an alternative for expensive heliostat drive solutions with slew and linear drives from abroad. By (locally produced) rims the demands on the drives regarding strength and precision are reduced to a very low value and low cost drives can be used. Sandwich facets (which are usually foreseen for rim drive heliostats) are not available from Brazilian manufacturers and are replaced by a frame work steel structure with 4mm glass mirrors. The mirrors are bended only about one axis to avoid too high stress of the mirrors when low focal lengths (e.g. 30m) have to be realized. For an 8.1m² heliostat the mirror panel was divided into six stripes of 2.5m x 0.54m. The stripes have to be canted to reach a sufficiently small focal spot. An accordant heliostat was designed and built. High stiffness was reached and sufficient durability of the mirror facets against wind loads. For 8m² heliostats the framework design should be simplified but for 16m² heliostats (or bigger) it seems to be appropriate.

Item URL in elib:https://elib.dlr.de/101406/
Document Type:Conference or Workshop Item (Speech)
Title:Heliostat tailored to Brazil
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Pfahl, AndreasSF-PN STUNSPECIFIED
Bezerra, Pedrobezerra_ph (at) hotmail.comUNSPECIFIED
Hölle, ErwinSOLTECUNSPECIFIED
Liedke, PhillipPhillip.Liedke (at) dlr.dehttps://orcid.org/0000-0003-3391-8638
Teramoto, Erico Tadaoericoengineer (at) fca.unesp.brUNSPECIFIED
Hertel, Johannesjohannes.hertel (at) dlr.deUNSPECIFIED
Lampkowski, Marcelomarcelo-l (at) uol.com.brUNSPECIFIED
Oliveira, L. decelsooli (at) usp.brUNSPECIFIED
Date:2015
Journal or Publication Title:2015 ISES Solar World Congress 2015 Conference Proceedings
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:central receiver; solar tower plant; heliostat; rim drive; wind loads
Event Title:ISES Solar World Congress 2015
Event Location:Daegu, Korea
Event Type:international Conference
Event Dates:08.-12. Nov. 2015
Organizer:ISES, International Solar Energy Society
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Concentrating Solar Thermal Technology
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Advanced Heat Transfer Media (old)
Location: Stuttgart
Institutes and Institutions:Institute of Solar Research > Punktfokussierende Systeme
Deposited By: Pfahl, Andreas
Deposited On:11 Jan 2016 14:07
Last Modified:11 Jan 2018 13:17

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