Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Andreas Pfahl"'
Autor:
Andreas Pfahl, Volkmar Dohmen
Publikováno v:
SolarPACES Conference Proceedings, Vol 2 (2024)
Four heliostat concepts with extensive use of timber, concrete, or polymers were developed. For cost comparison, a 2 m² benchmark heliostat was designed and built with only moderate or no use of these materials. The benchmark heliostat was found to
Externí odkaz:
https://doaj.org/article/80adf25e2f494bb0adaf361fbeb90882
Autor:
Andreas Pfahl
Publikováno v:
SolarPACES Conference Proceedings, Vol 2 (2024)
An approach to estimate the wind load spectra for heliostats is proposed. It is based on the wind-induced fatigue cycle counts for buildings given by the Eurocode EN 1991 and considers heliostat specific impact factors. The approach can be further re
Externí odkaz:
https://doaj.org/article/e5bbd1a75dca46df8d6afe349665f4f2
Publikováno v:
Solar Energy. 225:60-82
Accurate estimation of the static and dynamic wind loads on heliostats based on detailed measurement and characterisation of turbulence is crucial to avoid structural failure and reduce the cost of the structural heliostat components. Wind load predi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a8955c917407bf519068d02512c58d2
https://doi.org/10.1016/j.solener.2021.07.014
https://doi.org/10.1016/j.solener.2021.07.014
Publikováno v:
AIP Conference Proceedings.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f00763372858393146a37fae3d91fb73
https://doi.org/10.1063/5.0086016
https://doi.org/10.1063/5.0086016
Autor:
Marc Röger, Andreas Pfahl, Mark Geiger, Maziar Arjomandi, Fabian Wolfertstetter, Joe Coventry, Fabian Gross, Peter Schwarzbözl, Juan Felipe Vásquez-Arango, Phillip Liedke
Publikováno v:
Solar Energy. 152:3-37
Strong efforts are being made to drive heliostat cost down. These efforts are summarised to give an update on heliostat technology comprising: determination of wind loads, heliostat dimensioning, solutions for the different sub-functions of a heliost
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e486081d24ad986e58472cd9c985fe5
https://doi.org/10.1016/j.solener.2017.03.029
https://doi.org/10.1016/j.solener.2017.03.029
Autor:
Siddhant Mehta, Reiner Buck, Andreas Pfahl, Jens Rheinländer, Johannes Hertel, Fabian Gross, Phillip Liedke, Juan Felipe Vásquez-Arango, Stefano Giuliano
Publikováno v:
AIP Conference Proceedings.
A complete set of innovations are combined to a new heliostat of minimum cost. The main improvements are a monolithic sandwich-cantilever-arm concentrator of low material and fabrication cost, a lay down of the panels during storms to reduce the maxi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f74e66220d6080daa04120b9f39b31b3
https://doi.org/10.1063/1.5067066
https://doi.org/10.1063/1.5067066
Publikováno v:
AIP Conference Proceedings.
The improvements of the mechanical structure of the current rim drive heliostat generation with chain drive system and monolithic sandwich structure is described. The improvements of the mechanical structure result in increased torsional stiffness of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f52bcc788d819d297433851160ac74f
https://doi.org/10.1063/1.5067057
https://doi.org/10.1063/1.5067057
Publikováno v:
Energy Procedia. 49:193-200
At SolarPACES 2012 conference a new heliostat concept was presented. It is equipped with wireless communication, sandwich facets, wind protection devices for wind load reduction, rim drives with winch wheels and ground anchor foundation. Crucial for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f5da78f1f5ca8c9efba9974e3b6eade
Publikováno v:
Solar Energy. 92:230-240
Several approaches for cost reduction of heliostats, which fit well to each other, are combined to a new heliostat concept to achieve the current challenging cost objectives: The wind loads are reduced by appropriate manipulators which reduces weight
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::555f12067ef0094b594f758ce64d46c0
https://doi.org/10.1016/j.solener.2013.03.005
https://doi.org/10.1016/j.solener.2013.03.005