18 Tran Huu Duc street, Tu Liem District, Ha Noi
|Type of Building:||Office Building|
|New / Refurbished:||New|
|Year of construction:||2011|
|Gross Floor Area:||2233 sq.m|
Agribank Tower is a twenty-one floor building. It was awarded the second prize in the Energy Efficient Building Contest of the Ministry of Industry and Trade in 2012 and the second prize in the Asean Energy Award 2013. Significant energy saving measures has been implemented to the centralised air conditioning, lifts and lighting systems. In addition, an Integrated Building Management System (IBMS) was also installed to allow an efficient monitoring.
Third Party Verified: No
Source of Information: Agribank Tower
Methods of data collection: interviews with manager and data collection via email.
Building Management Unit:
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 double glazed windows which allow better insulation.
Those also are covered with a reflective film on the outer surface to reduce the heat gain throughout the building.
Wall tiling from the first floor to the fourth floor is made of granite tiles.
Steel frames are bolted to the wall at a distance of 6cm to hold the wall tilings. This double skin system is creating an air gap layer in between the tiles and the building structure to improve insulation and reduce direct heat transfer inside the building.
Over Thermal Transfer Value (OTTV) of the wall is calculated by ECC Ha Noi at 30.5 W/m2, a reduction of 49% compared to the EEBC requirement (of 60W/m2).
Roof – Terrace
The roof is insulated with a 5cm layer of glass wool, a performant insulation material.
Over Thermal Transfer Value (OTTV) of the roof is calculated by ECC Ha Noi at 15.6 W/m2, a reduction of 37% compared to the EEBC requirement (of 25W/m2).
1. Centralised air conditioning
Installation of a Variable Refrigerant Volume system with a capacity of 552 kW and COP of 3.6, a 33% improvement compared to the EEBC requirement (of 2.7).
1. Use of energy efficient lamps
3300 (7W and 13W) Compact fluorescent light lamps are installed in lobbies and offices.
Lighting Power Density (LPD) is 10 W/m2, a reduction of 9% compared to the 2013 EEBC requirement.
2. Control of lighting
Occupation sensors have been installed in public areas and stairs to avoid unnecessary energy consumption.
4 (16kW) Lift motors have been installed 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 lifts.
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 (14 members) perform 900 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.