29 May '18, 9am

Waste Heat: Innovators Turn to an Overlooked Renewable Resource

The problem is not so much that waste heat directly warms the atmosphere — the heat we throw into the air accounts for just 1 percent of climate change . Instead, the problem is one of wastage. If the energy is there, we should use it. For a long time, says Simon Fraser University engineer Majid Bahrami, many simply haven’t bothered. “The attitude has been that the environment can take this waste; we have other things to worry about,” he says. “Now we have to be more efficient. This is the time to have this conversation.” The global demand for energy is booming — it’s set to bump up nearly 30 percent by 2040. And every bit of waste heat recycled into energy saves some fuel — often fossil fuels — from doing the same job. Crunching the exact numbers on the projected savings is hard to do, but the potential is huge. One study showed that the heat-needy United Kingdom, for exa...

Full article: https://e360.yale.edu/features/waste-heat-innovators-turn...

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