Lot VP1, Yen Hoa ward, Cau Giay District
|Type of Building:||Office Building|
|New / Refurbished:||New|
|Year of construction:||2010|
|Gross Floor Area:||24100 sq.m|
Mobifone is a fifteen floor building. It was awarded the first prize in the Energy Management Contest in Industry and Buildings of the Ministry of Industry and Trade in 2013. Significant energy saving measures have been implemented to the centralised air conditioning, lifts and lighting systems. In addition, the Integrated Building Management System (IBMS) was also installed to allow efficient monitoring.
Third Party Verified: No
Source of Information: Mobifone Tower
Methods of data collection: interviews with manager and data collection via email.
84 43 78 31 733
Building Management Unit:
(+84) 4 3773 8686
The window to wall ratio (WWR) is 50% which complies with the Energy Efficient Building Code – Building Envelope Guideline (EEBC) since WWR must be between 30% and 50% (EEBC 2013).
All windows are covered with reflective films to reduce the heat gain throughout the building.
Walls at the fourth and the fifth floors where telecommunication devices are installed are insulated with a 5 cm of glass wool. This helps reducing further the heat gain from outside in an area where telecommunication equipment already emits a substantial amount of heat.
The roof of the building is composed of four layers made up of:
+ Corrugated iron roof (5 mm)
+ Glass wool (8 cm)
+ Ceiling void (90 cm)
+ Gypsum Ceiling
Centralised air conditioning
Installation of a Variable Refrigerant Volume (VRV) AC system that includes 15 outdoor units with a capacity of 18 hp each and COP of 3.5, a 23% improvement compared to the EEBC requirement (of 2.84).
1. Use of energy efficient lamps
700 (11W and 20W) Compact flourescent light lamps are installed in lobbies and offices.
2. Control of lighting
Occupation sensors have been installed in toilets and two basements to avoid unnecessary energy consumption.
All (3.7 kW) extraction fans located at the basement are installed with variable speed drives to better control the load.
An Integrated Building Management System (IBMS) controls and monitors the building’s mechanical and electrical equipment including centralised air conditioning, ventilation, lighting, water pumping and lift systems.
This allows the technical team to precisely operate and monitor the energy consumption in the building.
Implementation of a preventative maintenance, repair and replacement plan for each family of equipment.
Qualified Technical Staff (13 members) perform 11,000 hours of maintenance work per year to ensure continuous operation of the building.
Organisation of training courses to raise staff awareness about efficient energy usage.
Staff training to operate the IBMS, centralised air conditioning and water pumping systems represents approximately 80 hours/person/year.