More energy worldwide being used to keep buildings cool



A large and growing chunk of the energy mankind uses goes toward keeping our buildings cool.

Worldwide, the figure is about 10 per cent, but in hotter climates - the Arabian Gulf, Africa, and South Asia - that figure can be much higher.

On the hottest day of 2008, building cooling accounted for more than 60 per cent of the electricity used on Abu Dhabi Island.

And as the number of buildings increases, so too will the impact of those that waste energy.

That is why there is an important need to develop efficient building designs that employ the best technologies in their construction.

At the Masdar Institute, I have focused on this problem and have tried to design cost-effective systems that allow buildings to use no net energy.

One integral part of these systems is "precooling", which seeks to reduce the temperature in a building in a strategic way that helps save energy.

Very basic precooling has been practised for millennia through natural ventilation systems such as wind towers, which draw cool breezes into a home in the evening and early morning so the building mass can stay cool through the next day, and in modern times, attic fans.

Fans and open windows work in some climates, if one makes a habit of turning off the fan and closing windows when - shortly after sunrise - it becomes hotter outside that in.

But in climates as hot as the Arabian Gulf and South Asia, where even the nights are still too hot for comfort, a more sophisticated system is needed.

Part of the answer is low-lift cooling. Like the older, natural solutions, this shifts as much of the cooling as possible to night-time, allowing the condenser, which is the heart of a cooling system, to be effective at lower temperatures - therefore using less energy.

It requires a range of technologies, including variable-speed compressors and transport motors, radiant cooling with dedicated ventilation air dehumidification and distribution, cool storage, and advanced controls.

UAE construction practice, which uses concrete extensively even in residential buildings, is ideally suited to store the precooling effect.

In high-performance buildings, cooling loads will be much lower, on average, than in buildings built to current standards. Even so, they will need year-round cooling.

Low-lift cooling and high-performance building envelopes are hallmarks of green construction that are exemplified by sustainable cities like Masdar.

So far, our work on low-lift cooling with radiant distribution, thermal storage, and variable-speed chiller controls suggests we can achieve energy savings of between 60 per cent and 74 per cent for temperate to hot and humid climates, and between 30 and 70 per cent in milder climates with high economiser and night free-cooling potential.

The most effective low-lift chiller, distribution components and control strategies pinpointed by our project will be used in a pilot project in one wing of Masdar City's newest buildings (Masdar Institute phase 1B, due to open in September 2012) while a smaller test is under way at the Masdar Field Station.

It is my hope that our work will not only change the way buildings are built across the world, but will also improve electrical energy distribution efficiency and reliability.

Once the systems we are developing are proven and ready for market, government policy and public action must follow if we are to provide our children with a better future.

Dr Peter Armstrong is an associate professor of mechanical engineering at the Masdar Institute of Science and Technology

THE SPECS

Engine: 1.5-litre turbocharged four-cylinder

Transmission: Constant Variable (CVT)

Power: 141bhp 

Torque: 250Nm 

Price: Dh64,500

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KEY DATES IN AMAZON'S HISTORY

July 5, 1994: Jeff Bezos founds Cadabra Inc, which would later be renamed to Amazon.com, because his lawyer misheard the name as 'cadaver'. In its earliest days, the bookstore operated out of a rented garage in Bellevue, Washington

July 16, 1995: Amazon formally opens as an online bookseller. Fluid Concepts and Creative Analogies: Computer Models of the Fundamental Mechanisms of Thought becomes the first item sold on Amazon

1997: Amazon goes public at $18 a share, which has grown about 1,000 per cent at present. Its highest closing price was $197.85 on June 27, 2024

1998: Amazon acquires IMDb, its first major acquisition. It also starts selling CDs and DVDs

2000: Amazon Marketplace opens, allowing people to sell items on the website

2002: Amazon forms what would become Amazon Web Services, opening the Amazon.com platform to all developers. The cloud unit would follow in 2006

2003: Amazon turns in an annual profit of $75 million, the first time it ended a year in the black

2005: Amazon Prime is introduced, its first-ever subscription service that offered US customers free two-day shipping for $79 a year

2006: Amazon Unbox is unveiled, the company's video service that would later morph into Amazon Instant Video and, ultimately, Amazon Video

2007: Amazon's first hardware product, the Kindle e-reader, is introduced; the Fire TV and Fire Phone would come in 2014. Grocery service Amazon Fresh is also started

2009: Amazon introduces Amazon Basics, its in-house label for a variety of products

2010: The foundations for Amazon Studios were laid. Its first original streaming content debuted in 2013

2011: The Amazon Appstore for Google's Android is launched. It is still unavailable on Apple's iOS

2014: The Amazon Echo is launched, a speaker that acts as a personal digital assistant powered by Alexa

2017: Amazon acquires Whole Foods for $13.7 billion, its biggest acquisition

2018: Amazon's market cap briefly crosses the $1 trillion mark, making it, at the time, only the third company to achieve that milestone

TWISTERS

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Rating:+2.5/5

Kill

Director: Nikhil Nagesh Bhat

Starring: Lakshya, Tanya Maniktala, Ashish Vidyarthi, Harsh Chhaya, Raghav Juyal

Rating: 4.5/5

SPECS: Polestar 3

Engine: Long-range dual motor with 400V battery
Power: 360kW / 483bhp
Torque: 840Nm
Transmission: Single-speed automatic
Max touring range: 628km
0-100km/h: 4.7sec
Top speed: 210kph
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Abu Dhabi GP schedule

Friday: First practice - 1pm; Second practice - 5pm

Saturday: Final practice - 2pm; Qualifying - 5pm

Sunday: Etihad Airways Abu Dhabi Grand Prix (55 laps) - 5.10pm

Essentials

The flights
Emirates, Etihad and Malaysia Airlines all fly direct from the UAE to Kuala Lumpur and on to Penang from about Dh2,300 return, including taxes. 
 

Where to stay
In Kuala Lumpur, Element is a recently opened, futuristic hotel high up in a Norman Foster-designed skyscraper. Rooms cost from Dh400 per night, including taxes. Hotel Stripes, also in KL, is a great value design hotel, with an infinity rooftop pool. Rooms cost from Dh310, including taxes. 


In Penang, Ren i Tang is a boutique b&b in what was once an ancient Chinese Medicine Hall in the centre of Little India. Rooms cost from Dh220, including taxes.
23 Love Lane in Penang is a luxury boutique heritage hotel in a converted mansion, with private tropical gardens. Rooms cost from Dh400, including taxes. 
In Langkawi, Temple Tree is a unique architectural villa hotel consisting of antique houses from all across Malaysia. Rooms cost from Dh350, including taxes.

Dengue fever symptoms
  • High fever
  • Intense pain behind your eyes
  • Severe headache
  • Muscle and joint pains
  • Nausea
  • Vomiting
  • Swollen glands
  • Rash

If symptoms occur, they usually last for two-seven days

Sarfira

Director: Sudha Kongara Prasad

Starring: Akshay Kumar, Radhika Madan, Paresh Rawal

Rating: 2/5

Mercer, the investment consulting arm of US services company Marsh & McLennan, expects its wealth division to at least double its assets under management (AUM) in the Middle East as wealth in the region continues to grow despite economic headwinds, a company official said.

Mercer Wealth, which globally has $160 billion in AUM, plans to boost its AUM in the region to $2-$3bn in the next 2-3 years from the present $1bn, said Yasir AbuShaban, a Dubai-based principal with Mercer Wealth.

Within the next two to three years, we are looking at reaching $2 to $3 billion as a conservative estimate and we do see an opportunity to do so,” said Mr AbuShaban.

Mercer does not directly make investments, but allocates clients’ money they have discretion to, to professional asset managers. They also provide advice to clients.

“We have buying power. We can negotiate on their (client’s) behalf with asset managers to provide them lower fees than they otherwise would have to get on their own,” he added.

Mercer Wealth’s clients include sovereign wealth funds, family offices, and insurance companies among others.

From its office in Dubai, Mercer also looks after Africa, India and Turkey, where they also see opportunity for growth.

Wealth creation in Middle East and Africa (MEA) grew 8.5 per cent to $8.1 trillion last year from $7.5tn in 2015, higher than last year’s global average of 6 per cent and the second-highest growth in a region after Asia-Pacific which grew 9.9 per cent, according to consultancy Boston Consulting Group (BCG). In the region, where wealth grew just 1.9 per cent in 2015 compared with 2014, a pickup in oil prices has helped in wealth generation.

BCG is forecasting MEA wealth will rise to $12tn by 2021, growing at an annual average of 8 per cent.

Drivers of wealth generation in the region will be split evenly between new wealth creation and growth of performance of existing assets, according to BCG.

Another general trend in the region is clients’ looking for a comprehensive approach to investing, according to Mr AbuShaban.

“Institutional investors or some of the families are seeing a slowdown in the available capital they have to invest and in that sense they are looking at optimizing the way they manage their portfolios and making sure they are not investing haphazardly and different parts of their investment are working together,” said Mr AbuShaban.

Some clients also have a higher appetite for risk, given the low interest-rate environment that does not provide enough yield for some institutional investors. These clients are keen to invest in illiquid assets, such as private equity and infrastructure.

“What we have seen is a desire for higher returns in what has been a low-return environment specifically in various fixed income or bonds,” he said.

“In this environment, we have seen a de facto increase in the risk that clients are taking in things like illiquid investments, private equity investments, infrastructure and private debt, those kind of investments were higher illiquidity results in incrementally higher returns.”

The Abu Dhabi Investment Authority, one of the largest sovereign wealth funds, said in its 2016 report that has gradually increased its exposure in direct private equity and private credit transactions, mainly in Asian markets and especially in China and India. The authority’s private equity department focused on structured equities owing to “their defensive characteristics.”

The specs: 2018 Audi RS5

Price, base: Dh359,200

Engine: 2.9L twin-turbo V6

Transmission: Eight-speed automatic

Power: 450hp at 5,700rpm

Torque: 600Nm at 1,900rpm

Fuel economy, combined: 8.7L / 100km

MO

Creators: Mohammed Amer, Ramy Youssef

Stars: Mohammed Amer, Teresa Ruiz, Omar Elba

Rating: 4/5

COMPANY PROFILE

Name: Xpanceo

Started: 2018

Founders: Roman Axelrod, Valentyn Volkov

Based: Dubai, UAE

Industry: Smart contact lenses, augmented/virtual reality

Funding: $40 million

Investor: Opportunity Venture (Asia)

Company profile

Company name: Fasset
Started: 2019
Founders: Mohammad Raafi Hossain, Daniel Ahmed
Based: Dubai
Sector: FinTech
Initial investment: $2.45 million
Current number of staff: 86
Investment stage: Pre-series B
Investors: Investcorp, Liberty City Ventures, Fatima Gobi Ventures, Primal Capital, Wealthwell Ventures, FHS Capital, VN2 Capital, local family offices

The biog

Name: Marie Byrne

Nationality: Irish

Favourite film: The Shawshank Redemption

Book: Seagull by Jonathan Livingston

Life lesson: A person is not old until regret takes the place of their dreams

COMPANY PROFILE

Company: Eco Way
Started: December 2023
Founder: Ivan Kroshnyi
Based: Dubai, UAE
Industry: Electric vehicles
Investors: Bootstrapped with undisclosed funding. Looking to raise funds from outside


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