Cooling the World is warming the Planet.
Cooling is a big energy guzzler
As the world warms due to human-induced climate change, cities face a double whammy. High-density urban areas create urban heat island effects that heat cities. To cool them down, buildings rack up air conditioning. These air conditioners emit more heat and make the city hotter.
Buildings contribute to 20% of Singapore’s carbon emissions.
60% of office building energy consumption is attributed to cooling.
(Source: BCA Super Low Energy Roadmap)
As South East Asia urbanizes, space cooling is expected to be one of the fastest-growing uses of electricity to 2040 (Source: Energy Outlook Report).
Why improving thermal comfort can also reduce carbon emissions? Credit: Ruiee Dhuri/bioSEA
Thermal comfort, health and productivity
An analysis of user thermal comfort in Singapore shows that even under completely shaded conditions, building occupants spend most of their time in the ‘caution’ and ‘extreme caution’ sections for the Outdoor Work Heat Index. This applies to the wider tropics and could get worse under future climate change scenarios and lead to heat strokes and other heat-related injuries.
Push to Low Carbon Economy
Singapore’s Green Mark 2021 aims to raise energy efficiency standards by mainstreaming the uptake of Super Low Energy buildings; and aligning with the United Nations (UN) Sustainable Development Goals (SDGs). Under the Green Mark’s Building Code (Environmental Sustainability) Amendments 2021, tighter base requirements for Envelope and Roof Thermal Transfer and new indicators for carbon reduction measures are required to satisfy the regulatory requirements. These indicators include enhanced building envelope performance and naturally ventilated space design.
A study from Singapore suggests that occupants who are more satisfied with their thermal environment have better work productivity.
United Nations’ Sustainable Development goals which are a part of the 2030 Agenda for Sustainable Development.