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Sun-Tracking Photo Voltaic Louvres

Sun-Tracking Photo Voltaic Louvres

Sun-Tracking Photo Voltaic Louvres

Motorised Sun-Tracking Photo Voltaic Louvres

This product is specifically designed to perform two jobs. Firstly to offer solar shading throughout the day to glazing mounted underneath the system, and secondly to generate power by means of photovoltaic cells built into the louvre blades. The louvre blades are created from aluminium frame profiles which hold solar panels which are made up from the photovoltaic cells.

As the sun passes overhead from east to west during the course of the day, the on board sun tracking computer controls an electric actuator which moves the louvre blades so that they are allows facing the sun. This offers maximum shading to the glass below, and also ensures maximum power is generated by the p v cells.

The power is transmitted from the cells via in built cables to the pivot of the louvre blade, which is hollowed out to allow the cable to pass through it and out to the DC to AC invertor array. From here the AC voltage is distributed into the mains supply. At sunset the tracking computer commands the system to reset all of the louvre blades back to the starting position, ready for the next sunrise.

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Brise Soleil Horizontally Mounted Canopy

The most popular of all Brise Soleil configurations, horizontally mounted canopies are generally mounted immediately above the glazed area that they are shading. Most horizontal canopies have a projection of between 500 mm and 1,500 mm, which is generally more than adequate to shade the windows or doors below. Options include joining a number of canopies together to form a continuous run, corner units, and overhead support arms.

The brackets that fix the canopies to the wall can either be fixed to the structure before render is applied (generally the case on a new build) or in the case of retro fitting to existing buildings, can be fixed to the external finish. In both cases the brackets are powder coated to match the rest of the system.

Motorised Brise Soleil

Motorised Brise Soleil - when should motorised BS be considered?

For many applications, a fixed blade system provides all of the functionality required by the client. For example, if the system is being used primarily as privacy screening, or as an architectural feature, then a fixed blade system is almost always the preferred solution. Even when solar shading is the primary objective, this can still very often be achieved by the use of a fixed blade system. With lower costs, simplified installation and no moving parts, a fixed blade system offers most customers the best balance of functionality against price and ease of use.

There are however circumstances when an adjustable blade system provides more consistent solar shading across the whole of the day, and throughout the year. If such a system is required, then the blades are mounted on pivot points at each end, joined together with a connecting rod, and moved by means of an electric actuator (a motor that moves the connecting rod backwards and forwards). The amount of movement and the direction of rotation are usually controlled by a hand held wireless controller, rather like a TV remote control. However, if required a third party automated system, such as a BMS (building management system) can be linked in to control the motor automatically.

Motorised Brise Soleil with built-in solar panels - Case Study

Client: Kuwait University

Requirement: Motorised Brise Soleil with built in solar panels

Overview: The client wished to combine shading of large roof windows with power generation using solar panels as louvres.

Solution: Aluminium Systems commissioned a UK based solar panel manufacturer to produce custom solar panels and associated wiring and control systems. These were mounted in heavy duty frames designed to fit into the University’s roofing system.

The solution consisted of three large Brise Soleil systems which created a solar power generating array, the output of the entire system was then sent back into the University’s power distribution system. A computer program was created to control the position of the blades throughout the day in order to track the Sun, then to return the blades to their original position in the evening, ready for the following day.

The challenges: As this was a completely bespoke system, it had to be developed “from the ground up”. So a test system was built to prove the feasibility of the solution, this was then modified in order to introduce improvements until it finally evolved into a system suitable for production. All three production systems were fully built and tested, then disassembled and packed for shipping, complete with detailed installation and commissioning instructions. The system was shipped to site and installed by a locally based installation company.