Energy Taskforce

Overview

Objective: To transform NUS into one of the most energy efficient university campuses.

Target:   To reduce the energy intensity by 20% by FY2020 (base year FY2012).

Achievements

1.Green Mark (Platinum) for Laboratories (March 2017)    

Building and Construction Authority (BCA) conferred the Green Mark Platinum award to NUS Faculty of Science, Chemistry Lab, Tahir Foundation Building (MD1, Level 14).

Green Features for Labs

  • Energy efficient lighting and aircon systems;
  • Ventilation air change rates at 12 ACH (Air Change Per Hour);
  • Fume hood face velocity at 0.41 m/s;
  • Auto-sash closers for fume hoods;
  • Localised exhaust of heat sources;
  • Utilization of water recycling features; and
  • Segregation of areas with different ventilation rates.

 

2.Chiller Plants Consolidation (June 2017)

Before: 3 chiller plants served 15 buildings in FOE, SDE & CELC.
After: only 1 chiller plant is needed to provide central chilled water supply to the same clusters.
Leads to energy saving of 6.8 million kWh/year
Example: Savings from AS8 plant since April 2016 is estimated at 1.26 million kWh for FY 2016

3.Adjustment to Air Change Rates in Labs

Reduction in energy use in labs by adjusting the ventilation air change rates without compromising on safety or comfort of the lab occupants. Leads to energy saving of 1.6 million kWh/year. 

 

4.Change in Operating Conditions

Reducing operating hours and optimizing settings of facilities and systems.  Leads to energy saving of 1 million kWh/year

(1 million kWh/year is equivalent to annual energy use of 215 units of 4-room HDB flats)