date:Sep 10, 2013
how much carbon dioxide we produce and other emissions, it's pretty small, Brooks says. But it's a start.
Brooks says hydrogen fuel cells are twice as efficient as the diesel engines used to cool refrigerated trucks, but they can be expensive. He and his colleagues are working to make them cheaper for companies to use. The cooling system they are currently working on which includes a fuel cell and cooling container, costs about $40,000. By comparison, a diesel-engine-based cooling system typi