'al-bahr towers' by AEDAS, abu dhabi, UAE
all images courtesy of AEDAS
international practice AEDAS is nearing completion of the 'al-bahr towers' for the abu dhabi investment council headquarters in abu dhabi,
that utilize what is perhaps the largest and most advanced interactive sun-shading skin system. the two 25-storey office towers are
parametrically designed based on islamic geometric mosaics, using the tessellation of simple shapes to drive the structure.
the cylindrical forms maximize volume and floor-to-wall area while offering views in all directions, unfortunately however,
this also opens the interior to a very large solar gain factor which is a substantial problem in the extreme local climates.
standing tall in the abu dhabi landscape
reinterpreting the traditional wood-lattice screens called 'mashrabiya' using today's technological abilities resulted in an outer skin
system of triangular screens arranged in a series of scalable hexagons fold up to create a solid solar barrier. each of the 1000 panels
is connected to a linear actuator which enables it to function in response to the position of the sun, effectively reducing heat gain and
glare by 50% while giving islamic vernacular a contemporary representation. the intelligent facade, together with solar thermal panels
for hot-water heating and photovoltaic panels on the roof, minimize the need for internal lighting and cooling, altogether reducing total
carbon dioxide emissions by over 1750 tons per year.
sun-shading panels fold up and down
transformation of geometries
structural layers of the towers
geometric make-up of the panel system and its structure, opened (left) and closed (right)