1. In a liquid-to-gas heat exchanger, the fins are placed on the liquid side.
2. A blackbody is a perfect emitter of radiation.
3. A perfect blackbody is one that absorbs all incoming radiation and does not reflect any.
4. Adding more insulation to a plane wall always decreases heat transfer.
5. Adding more insulation to a plane roof might decrease heat transfer.
6. In some scenarios, a fin slows down the heat transfer from the surface.
7. The thermal conductivity of the fin material should be as high as possible.