With more heat waves in our future, researchers say we need to look at clean cooling

As we enter another season of cold temperatures, it is easy to forget about heat waves. However, the reality is that Canadians are experiencing more frequent and intense heat waves, making it crucial to find sustainable cooling solutions to keep people safe without further damaging the environment.

In 2021, a devastating heat wave in B.C. led to the deaths of approximately 600 people. This tragic event prompted a surge in the purchase of air conditioners, with the government even stepping in to provide free AC units to low-income families. However, traditional air conditioners are not without their own environmental impact. They are often powered by fossil fuels and emit harmful greenhouse gases, particularly hydrochlorofluorocarbons (HFCs), into the atmosphere.

The concept of sustainable cooling aims to provide clean and environmentally friendly cooling solutions. This can range from passive cooling methods such as green roofs and white roofs, to developing renewable energy sources for powering cooling systems. Efforts are also being made to phase out HFCs through initiatives like the Kigali Amendment to the Montreal Protocol.

Technological advancements are also driving innovation in sustainable cooling. The Global Cooling Prize, launched in 2018, aims to reduce the climate impact of air conditioners by at least five times. Winning designs have shown that it is possible to significantly increase energy efficiency while reducing environmental harm.

At the global level, more than 60 countries have signed the Global Cooling Pledge, committing to reducing cooling-related emissions and increasing access to sustainable cooling options. The United Nations estimates that over 2.4 billion workers are exposed to excessive heat due to the climate crisis, leading to serious health risks and productivity losses.

Sustainable cooling is not only about keeping people comfortable during heat waves but also about addressing other critical issues such as food waste. A reliable cold chain infrastructure is essential for transporting food and medical supplies, reducing waste and ensuring access to essential goods.

By accelerating the adoption of passive cooling methods, increasing energy efficiency, and phasing down harmful refrigerants, we can reduce electricity consumption, save on equipment costs, and drive significant financial savings. The shift towards sustainable cooling is not just an environmental imperative but also a smart financial decision.

As we transition to renewable energy sources, it is essential to rethink our approach to cooling and prioritize sustainability. By embracing sustainable cooling solutions, we can protect the environment, improve public health, and create a more resilient future for all.