[MiguelHudnandez]

Considering the expense we go to in order to cool things down, could this be scaled up to provide us with a light source and a cheaper way to cool things?

Right now, most energy that becomes heat is considered wasted because of limited applications in turning that heat back into usable energy.

[songgao]

That's what I'm thinking too. The first thing I thought of when reading about it was refrigerator/air-conditioner