MENU PLACES PEOPLE PARTNERS PEPERRFOFORRMMAANNCCEE PERFORMANCE ((ENENVVIIRROONNMENMENTT)) (ECONOMIC) Performance (Environment) Policies 2022 Progress Profile of Environmental Impacts Climate Change Energy Resource and Circularity Water Biodiversity Occupant Wellbeing Building/Asset Investments Energy Saving Innovations Two energy saving innovations were piloted at our properties this year. The first was a nanofluid solution consisting of aluminium oxide nanoparticles. The nanofluid is added to the chilled water system in one of our shopping malls to increase the water’s thermal conductivity, thus improving its heat transfer efficiency and reducing the system’s energy use. The nanofluid is expected to reduce chiller energy consumption by approximately 12.5%, or around 6% of landlord annual electricity consumption for the mall. The second was a pilot scheme to create advanced air duct seals for primary air ducts serving One Pacific Place, Three Pacific Place, 28 Hennessy Road, and Cityplaza, where deteriorating primary air ducts were beginning to leak. A water-based aerosolised sealant made from vinyl acetate polymer was used to seal the leaks, reducing air leakage, meaning less energy is wasted. The pilot sealing work indicated a saving of approximately 6% fan energy and 3% associated cooling energy, leading to 3-4% energy saving related to the primary air units. SUSTAINABLE DEVELOPMENT REPORT 2022 197