Robertson Ventilation Industries (RVI) – WAREMA partnership’s motorised blinds system was recently specified on the new Standard Bank head office building in Rosebank, Johannesburg.
The design of a building’s facade forms a vital part of the planning process. Efficient facades are a matter of combining high aesthetic demands with energy efficiency, heat insulation and comfort requirements. Correctly designed sun shading systems provide you with a considerable amount of freedom.
The energy a building requires can be divided into two basic categories:
- The energy needed so that a building can be used, in other words, to create a comfortable climate. First and foremost this means the production and control of heat, cold, light and air.
- The additional energy required, dependant on the use of the building. For example, to power computers and peripheral equipment in office and administrative buildings, or for production machines on the factory floor
In August 2011, Robertson Ventilation Industries (RVI) partnered with Europe’s leading sun shading External and Internal Venetian Blinds specialist, WAREMA – the largest single-source supplier of external and internal Venetian blinds and integrated control systems in Europe.
The RVI – WAREMA partnership was established in response to a tender issued by the project team responsible for the New Standard Bank offices located in the vibrant suburban business district of Rosebank in Johannesburg.
Whilst the architectural focus for the project was based on providing, among other requirements, ‘a transparent building’, the need to protect the building occupants from excessive temperature build-up, to reduce the energy consumption of the building and to provide predictable facade performance were paramount to the project team and client.
Extensive facade calculations, simulations and physical heat testing in a mock-up section of the facade, which was constructed off-site by the client, culminated in the project being provided with 1760No. Warema type AE80 blinds.
The electrically-operated blinds are located in the facade cavity and are linked to a sophisticated LONworks control system. Internal sun shading systems can be used to reduce the build-up of heat in rooms. Radiation which has already penetrated the glazing must be reflected back outside by the sun shading system.
A high degree of reflectance is necessary to reflect radiation back to the outside of the building.
Some of the impressive features of the Standard Bank offices in Rosebank’s motorised blind installation include a roof-mounted weather station, automatic sun tracking of the slats, temperature sensors built into the facade, WAREMA super-white reflective coating on the slat material and a system user interface that can be managed by the facility manager.
The project specification, extensive simulations and testing was carried out prior to the installation and the final product selection resulted in a shading system that contributes to reducing the overall consumption of energy in the building and creating a comfortable climate.
Robertson Ventilation Industries (RVI)
Tel: 011 608 4640