Honolulu plans office air conditioning using deep sea cold water

air conidtioning via deep sea cold water

It will cool half their downtown, cut air conditioning energy use 75%, and drop carbon emissions as well.

The project involves running a five-foot-wide pipeline hundreds of feet below the sea, which will then suck up thousands of gallons of frosty water and discharge it through air-conditioning units around the city, helping to cool off entire buildings. The warmed water is then dumped back into the ocean at a level and temperature that won’t harm nearby aquatic life.