The Burj Khalifa in Dubai, the world’s tallest
building, is tapping solar power to meet a bulk of the water
heating requirements of its residents.
The stunning tower uses solar panels to heat
140,000 litres of water every day, which will be distributed to
homes and commercial entities within the tower. The solar powered
water brings energy savings equivalent to 3,200 kilo watts per day
and 690MWh of energy per annum.
"Energy efficient measures, especially through use of renewable
sources, are not an option but an imperative for sustainable
growth. By leveraging solar power, Burj Khalifa is setting an
example as well as creating a referral mark on how urban
developments can effectively integrate energy-friendly
initiatives," said Mr Ahmad Al Matrooshi,
Managing Director – UAE, Emaar Properties.
The solar panels of Burj Khalifa serve as solar collectors, as
against photovoltaic electricity generation technology. Located on
roof of The Offices, the annexure of Burj Khalifa, 378 collector
panels, each 2.7 sqm in area, can heat the entire 140,000 litres
of water in approximately 7 hours of day time solar radiation.
Among other key sustainable energy and water use measures, the
condensation from all the air-conditioning equipment in Burj Khalifa
is reclaimed to cool the potable water from Dubai Electricity &
Water Authority. The condensate is then collected in an on-site
irrigation tank and used for tower’s landscaping. When
operational, this system will provide about 15 million gallons of
supplemental water per year.
To ensure energy efficiency, Fresh
Air Handling Units have been fitted with thermal wheels and,
wherever possible, economizer modes. Additionally, there is
extensive use of variable speed drives on the air-handling and
water-circulating equipment to also add to energy efficiency. The
air-conditioning and water systems also incorporate extensive
energy saving control systems to reduce part load energy
Burj Khalifa’s cladding system is constructed
to high standards with a high shading co-efficient and a low
U-value to reduce the transfer of external heat gains. Additional
energy use efficiency measures in place include automated solar
shading at entrance pavilions.
Burj Khalifa also features
several measures to reduce water consumption (WC) including water
flow restrictors and low water volume WC installed in all public
Burj Khalifa is a mixed-use tower featuring
luxurious residences, commercial suites and the world’s first
Armani Hotel and Armani Residences. The tower also has a rich
array of luxurious amenities including four swimming pools, an
exclusive residents’ lounge, health and wellness facilities, and
At.mosphere, the world’s highest fine dining restaurant at Level
122. At the Top, the
world’s highest observatory with an outdoor
terrace, is already one of Dubai’s most popular attractions.
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