At around 40 degrees Fahrenheit, chilly seawater can be used to air-condition buildings. The seawater “can chill fresh water in a heat exchanger or flow directly into a cooling system,” according to the Department of Energy.Although the air-conditioning technology is already functional, Galbraith also links to another article of hers, "Generating Energy From the Deep," that looks at a much more dramatic effort to use seawater to create energy. Lockheed Martin and other companies are working on methods that use the temperature differential between cold & warm sea water to produce renewable energy. As with most alternative energy proposals, there are all sorts of problems and drawbacks, including massive cost, but it is an interesting idea to keep an eye on.
Thursday, April 30, 2009
A Cool Idea
At Green Inc., a New York Times blog, there is an interesting article up about the use of seawater for cooling and energy. The author, Kate Galbraith, points out that cold seawater already forms the basis for an air-conditioning system at several sites.