Gregers Reimann, Director of IEN Consultants, delivered a compelling presentation at the Future Cities Summit 2024 during International Construction Week (ICW) and BuildXpo 2024, highlighting the transformative potential of retrofitting to advance sustainability in urban construction.
The session focused on how retrofitting existing buildings can deliver energy efficiency, occupant comfort, and environmental benefits. Case studies, including the NUS SDE3 university building in Singapore and the EECCHI office building in Jakarta, demonstrated significant improvements in energy savings, thermal comfort, and daylight optimisation post-retrofit.
The NUS SDE3 project showcased an innovative facade retrofit with daylight-enhancing features like butterfly screens and semi-specular light shelves. Completed in 2023, the project transformed the west-facing facade with innovative daylight strategies, including light shelves and tree shading, creating well-lit interiors without glare.Â
These elements improved natural light penetration while minimising glare, enhancing the space’s visual appeal and energy efficiency. A hybrid ventilation system combines ceiling fans and natural ventilation to achieve thermal comfort with minimal energy use, reducing energy consumption to just 45 kWh/m² per year. Sensors ensured efficient energy use by switching the air conditioning off when windows were open for natural cross-ventilation.
Retrofitting is not just about energy savings; it enhances property value, improves occupant health, and significantly reduces carbon footprints. As urban centres expand, retrofitting presents a sustainable alternative to demolition and reconstruction, aligning with global climate action goals.
