Description of the building:
Sun Hung Kai Centre as one of the iconic building in Wanchai, with 53 floors. It also serves as the corporate headquarters of Sun Hung Kai Properties.
Retrofitted initiative:
Replace air filters with lower MERV grading utilising the use of sonic technology, which can achieve the same or higher filtration efficiency with the original grading and enhance IAQ. Energy saving can also be attained through a reduction in pressure drop, hence on the fan power.
Existing filter of SHKC - 0.0701 kPa Pressure Drop
Aurabeat Energy Saving Sonic Air Filter - 0.0298 kPa Pressure Drop
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Observed benefits other than energy saving:
- Enhanced PM Filtration Efficiency
General observations of the retrofitting project:
- 1.17x increase in PM10 filtration efficiency.
- 8.68x increase in PM2.5 filtration efficiency.
- 1.65x increase in PM1 filtration efficiency.
- 57.5% reduction in pressure drop.
- 14.16% in fan power energy saving
Other information:
Measurement of Filter Efficiency of existing electrostatic air filter:
Measurement of Filter Efficiency of Aurabeat Energy Saving Air Filter
Checkpoint Measurement 6 months after installation.
Ventilation system lowered Fan Power by 14.16% while achieving better filtration efficiency
507,384 kWh Annual Electricity Saving
Sun Hung Kai Centre Installation Key Findings with 6 months running time: 14.16% Reduction in Fan Power
57.5% Reduction in Pressure Drop
1.65x Increase in PM1 Filtration Efficiency
8.68x Increase in PM2.5 Filtration Efficiency
1.17x Increase in PM10 Filtration Efficiency
| Cost |
Saving |
| Total cost: |
HKD 18,000 per AHU |
Total savings/year: |
HKD 9,000 per AHU |
| Savings/year breakdown: |
HKD 660,000 per year (for 180 AHUs in total) |
| Payback: |
~ 2 years |
| 
