A review of static and dynamic heliostat wind loads. (1st September 2021)
- Record Type:
- Journal Article
- Title:
- A review of static and dynamic heliostat wind loads. (1st September 2021)
- Main Title:
- A review of static and dynamic heliostat wind loads
- Authors:
- Emes, Matthew
Jafari, Azadeh
Pfahl, Andreas
Coventry, Joe
Arjomandi, Maziar - Abstract:
- Abstract: 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 predictions for heliostats are not specified in design standards for buildings because of a heliostat's non-standard shape and the variations of wind velocity and turbulence in the lowest 10 m of the atmospheric boundary layer (ABL). This paper reviews the static and dynamic wind loads on heliostats in the most unfavourable operating and stow positions, with a focus on the aerodynamic effects related to the heliostat structural component geometry, turbulence parameters in the ABL and field spacing. An increased resolution of field-scale wind measurements at heliostat field sites is recommended to fully characterise the ABL turbulence, as the high-intensity gusts over shorter durations at heights below 10 m lead to high-amplitude displacements with larger frequencies than observed in standard building structures. Increased understanding and development of aerodynamic wind load predictions for heliostats, based on their critical scaling parameters and local wind conditions, would increase the accuracy of annual field efficiency models through an improved resolution of operating load data and reduce the capital cost of structural components in power tower plants.
- Is Part Of:
- Solar energy. Volume 225(2021)
- Journal:
- Solar energy
- Issue:
- Volume 225(2021)
- Issue Display:
- Volume 225, Issue 2021 (2021)
- Year:
- 2021
- Volume:
- 225
- Issue:
- 2021
- Issue Sort Value:
- 2021-0225-2021-0000
- Page Start:
- 60
- Page End:
- 82
- Publication Date:
- 2021-09-01
- Subjects:
- Heliostat -- Wind load -- Aerodynamics -- Atmospheric boundary layer -- Turbulence
Solar energy -- Periodicals
Solar engines -- Periodicals
621.47 - Journal URLs:
- http://www.sciencedirect.com/science/journal/0038092X ↗
http://www.elsevier.com/journals ↗ - DOI:
- 10.1016/j.solener.2021.07.014 ↗
- Languages:
- English
- ISSNs:
- 0038-092X
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 8327.200000
British Library DSC - BLDSS-3PM
British Library HMNTS - ELD Digital store - Ingest File:
- 18486.xml