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Singapore Cools Down: Beyond Air Con?
1 Nov
Summary
- Singapore building sector accounts for one-fifth of emissions.
- Active chilled beams cut energy use by over 30% in tests.
- Government aims to save up to 48% in energy with new cooling tech.
Singapore, a nation with nearly universal air conditioner ownership, is actively seeking alternatives to energy-intensive cooling systems. The city-state's building sector contributes one-fifth of its emissions, with cooling alone consuming 40-60% of a building's energy. Current dependence on air conditioning exacerbates heat issues and contributes to climate change.
Innovative solutions like active chilled beams are being implemented. These systems use chilled water circulated through ceiling panels to cool air, reportedly cutting energy use by over 30% compared to conventional methods. The Paya Lebar Green building, for instance, maintains a comfortable 24C with these beams, offering a quiet and seamless cooling experience.
Other technologies include passive displacement cooling, which leverages natural airflow, and radiant cooling, using chilled water panels to absorb ambient heat. A 2024 government study identified alternative cooling technologies (ACTs) as crucial, projecting up to 48% energy savings for the city.
By mid-2026, numerous buildings were slated to adopt ACTs as Singapore aims for net-zero emissions by 2050. Despite higher initial installation costs, these systems promise lower running expenses. However, shifting public acceptance towards slightly higher temperatures, like 26C, remains a challenge for widespread implementation.
