Enhancement of Hong Kong International Airport

In a bid to increase the chiller plant efficiency and optimise the chiller plant utilisation, Airport Authority Hong Kong initiated the unification of Terminal 1 (T1) and Terminal 2 (T2) chilled water production plant.  A 1,000 RT chiller at T2 was relocated to the chiller plant at T1. 

After the integration process, the three chillers are dynamically operated to suit the varying cooling capacity demand at various time of the year. 

Through the optimisation of the control sequence , energy efficiency enhanced. 

The system also proved to attain significant savings upon taking system measurements. 

The average chiller plant Coefficient Of Performance (COP) value was improved by 5.93% and an annual energy saving of 4,700 MW per hour was achieved.