This summer, many regions in China grappled with unprecedented heat waves, recording an average July temperature of 23.2°C—the highest since 1961, according to the China Meteorological Administration. With two more heat waves anticipated before mid-August, the urgency to adapt to rising temperatures has never been greater.
Experts emphasize the need for comprehensive climate change strategies, highlighting the importance of urban planning and innovative architectural designs in mitigating heat impacts. Chongqing, often dubbed one of the \"furnace cities\" in southwest China, is at the forefront of this transformation.
The city boasts numerous energy-efficient buildings equipped with advanced technologies such as shading systems, enhanced ventilation, and effective heat dissipation methods. A standout example is a building in Chongqing’s Bonded Port Area, which features 10,000 square meters of smart glass. This intelligent material responds dynamically to thermal signals—when temperatures exceed 35°C, the glass automatically turns opaque, acting as a sunshade to block excessive heat and sunlight.
Zhong Xianqiang, leader of construction projects in Chongqing Bonded Port Area, explained to China Media Group (CMG) that the smart glass incorporates a polymeric nanogel. At lower temperatures, the nanogel molecules remain evenly dispersed, keeping the glass transparent and allowing sunlight to pass through. However, as temperatures rise, the molecules cluster together, refracting and reflecting sunlight across different bands. This innovative combination of materials effectively reduces heat infiltration, thereby maintaining comfortable indoor environments.
Chongqing’s adoption of smart glass and other sustainable technologies exemplifies the city’s commitment to combating urban heat and enhancing livability amidst global climate challenges. As more cities look to similar solutions, the integration of smart technologies in building designs promises a cooler, more sustainable future for urban areas worldwide.
Reference(s):
How new tech helps urban buildings in China cool themselves in summer
cgtn.com
