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Appendix B: Case Studies Data (Based on Data Collection and Survey)

Dubai World Trade Center (DWTC)

Emirates Towers Office Building (ETOB)

National Bank of Abu Dhabi Headquarter (NBAD)

Basic information

Client/owner

Dubai Government

HH Sheikh Mohammed bin Rashid Al Makhtoum

NBAD

Location

Sheikh Zayed Road, Dubai

Sheikh Zayed Road, Dubai

Khalifa Street, Abu Dhabi

Architect

John R. Harns

Hazel Wong

Carlos Ott

Other consultants

NORR, Hyder, DSSR

APG

Date completed

1979

Opened April 2000

Feb. 2003

Gross area

46,567 m2

64,000 m2

37,000 m2

Construction cost

N/A

N/A

200,000,000 AED

Energy performance

Total energy consumption

278 KwH/m2/year

560 KwH/m2/year

N/A

Artificial lighting

40%

N/A

N/A

Refrigeration cooling

1600 tons

N/A

1500 tons

Mechanical

ventilation

20%

N/A

N/A

Total estimated CO2 output

700 ppm

Not known

Not known

Energy features

Natural vent. (% of floor area)

20%

Nil

Nil

Thermal transmission of building envelope

Not known

Not known

Above standard

Night-time ventilation provision

Forced, through BMS ventilation is provided as per the enthalpy reading

Forced

Forced

Utilization of building mass for thermal storage

No

No

Yes

Solar control systems

External eggcrate shading devices

Only internal blinds

Only internal blinds

Building designed to maximize use of daylight

Yes

No

No

Net floor area %, needing artificial lighting

60%

100%

100%

(continued)

(continued)

Dubai World Trade Center (DWTC)

Emirates Towers Office Building (ETOB)

National Bank of Abu Dhabi Headquarter (NBAD)

Energy-saving controls for artificial lighting

Building management system

Computer-based centralized lighting control system

Lighting control system, access control system

Use of energy- efficient lighting fixtures

Reflective type diffusers

Modular and compact fluorescent luminaries, each light fixture is attached to a lighting control module which supplies power and enables independent or group dimming and on/off switching

Task-oriented fluorescent fixtures with electronic transformer starters saving energy consump. up to 20 % and expand tube life up to 30 %

 
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