Resfriamento Radiativo Combate a Mudança Climática Usando o Espaço como Dissipador de Calor

Urban environments are becoming increasingly sprawling and dense, resulting in more concrete and pavement than ever before.  The problem with that is the amount of heat absorbed by buildings and roads.  Surrounding areas become hotter, climate control systems must work harder, and greenhouse gas emissions skyrocket.  With that in mind, a team of researchers based out of the University of Maryland has come up with a simple but effective solution.  This is a recently developed material dubbed ‘cooling glass’, which can help to mitigate this growing problem and its effect on climate change through radiative cooling.

A Revolução do Resfriamento Radiativo

Battling climate change isn’t just about finding clean energy sources.  It is also about efficiently using the electricity we already create.  In this instance, cooling glass is a breakthrough that leverages the Albedo Effect and radiative cooling to essentially prevent thermal energy from the Sun from being trapped in typical building materials by reflecting it back into the emptiness of Space – a vacuum and limitless heat-sink that sits at a brisk -270ºC.
In its research article, the team states that it,

“…desenvolveu um compósito fotônico aleatório consistindo de uma estrutura de vidro microporoso que apresenta emissão seletiva de LWIR [radiação infravermelha de onda longa] juntamente com alta refletância solar e partículas de óxido de alumínio que dispersam fortemente a luz solar e evitam a densificação da estrutura porosa durante a fabricação.”

The resulting product, or ‘cooling glass’, is said to perform well in a variety of conditions, which, alongside a relatively easy manufacturing process, might just make it viable for large-scale applications in urban environments.

Fonte: www.cera.cool