ELI5: Explain Like I'm 5

Deep lake water cooling

Deep lake water cooling is a process that uses cold water from the depths of a lake to cool nearby buildings.

Imagine your body is like a city and your skin is like the walls of a building. When it's hot outside, your body tries to cool down by sweating. The sweat comes out of your skin and evaporates, taking away some of the heat with it.

Similarly, buildings can also get hot inside, especially when it's hot outside. To cool down, they use things like air conditioners that blow out cool air. But air conditioners use a lot of energy, which can be costly and bad for the environment.

Deep lake water cooling uses a more natural process to cool buildings. In some parts of the world, there are really deep lakes that stay cold even in the summertime. This is because the water at the bottom of the lake is denser than the water at the top, which means it doesn't mix or get warmer as easily.

To use this cool water to cool buildings, pipes are installed under the lake's surface. These pipes suck up the cold water from the bottom of the lake and bring it to the nearby buildings for cooling.

The water circulates through the pipes and absorbs the heat from the buildings. Then it goes back into the lake, where it can get cold again. This process repeats over and over again, helping to keep the buildings cool without using as much energy.

Overall, deep lake water cooling is a more environmentally-friendly way to cool buildings and can help save money on energy costs.