The use of a reflective paint coating to cool down the urban environment will be piloted by industrial developer JTC at buildings in Bukit Batok and Sin Ming. The trial, targeted to begin in the third quarter of 2024, adds to ongoing efforts in recent years to bring down...
The use of a reflective paint coating to cool down the urban environment will be piloted by industrial developer JTC at buildings in Bukit Batok and Sin Ming.
This follows an earlier experiment at a western JTC industrial area by Nanyang Technological University researchers that showed the painted environment was up to 2 deg C cooler during the hottest times of the day. Findings of the experiment, which was done in 2018 and 2019, were published in the journal Sustainable Cities and Society in March 2024.
About 30 per cent less heat was released from the painted buildings and pavements, cooling the area’s temperature by up to 2 deg C during the hottest time of the day at around 4pm. Pedestrians would feel 1.5 deg C cooler in that outdoor environment, according to measurements using the Universal Thermal Climate Index.
The researchers are formulating a more effective paint that uses barium sulphate pigment. This chemical can reflect more of the sun’s heat, which a building could have absorbed, back into outer space. As heat is released at night, the man-made phenomenon – which exacerbates global warming – can raise temperatures by 4 deg C to 7 deg C in urban areas here, according to the Cooling Singapore research project.
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