The Green Energy Office Building is a research building and a research project for Green Tech Malaysia. The design intent of the project was that this building should be a Zero Energy Office Building, or ZEO Building. This means that the building will consume no more electricity that what can be produced via the buildings integrated Solar PV system. The building was taken into use in November 2007, and at present (October 2010) the Energy Index is 35 kWh/m2/year, or 15% of the consumption of a typical office building.

The building has a long range of energy efficiency features integrated in the architectural as well as the M&E design. The daylight design of the building is very successful, as the electric lighting needs only to be on 5% of the time during working hours 8.00 – 17.00. The building has a building integrated cooling system with cooling coils embedded in the concrete floor slabs. This allows the chiller to run during nighttime, and the indoor comfort is increased as floors and ceilings have a surface temperature of 19 – 21 oC only.

Input by IEN Consultants

  • Overall thermal optimization of the building using computer simulation (IES Computer Suite)

  • Design and optimization of daylight design using advanced computer simulation (Radiance). The daylight autonomy is 95% during working hours.

  • Optimisation of the lighting system with energy efficient lighting and lighting control. Installed lighting load is 5 W/m2 only.

  • Design of a River Roof System that can utilize the PV roof surface as “cooling tower” during nighttime. A conventional wet cooling tower for daytime use is also installed.

  • Design of a phase change thermal storage system to store cooling from nighttime to daytime.

  • Overall optimization of all pumps and fans for dynamic control and low energy consumption.

  • Design and optimization of a rainwater collection and storage system.

  • Design of the PV systems by the Malaysian Building Integrated PV program, supported by UNDP/GEF.



GBI
Certified

Year of completion: 2007
Project scale: 5,000 m2
Energy benchmark: 35 kWh/m2/year
Client: Ministry of Energy, Green Technologies and Water
Subsidy: The EU - Asean Energy Facility (energy design) and UNDP/GEF (PV)
Contractor: Putrajaya Perdana
Architect: Dato Ruslan Khalid Architects