Hliníková fólia je dobrým tepelným izolantom, pretože je zlým vodičom tepla. Teplo sa môže materiálom prenášať iba vedením, konvekcia, alebo žiarenia. V prípade hliníkovej fólie, K prenosu tepla dochádza predovšetkým sálaním, čo je vyžarovanie elektromagnetických vĺn z povrchu predmetu.
Hliníková fólia je lesklá, reflective material that reflects radiant heat back towards its source. This means that if you wrap an object in aluminum foil, it will reflect the heat from the object back towards the object, rather than allowing it to escape into the surrounding environment. This can help to keep the object warm or cool, depending on its temperature and the surrounding conditions.
Okrem toho, aluminum foil is a thin material, which means that it does not have much mass to absorb and transfer heat. This makes it less effective as a conductor of heat, and therefore a better insulator.
Overall, aluminum foil’s combination of reflectivity and low thermal mass make it an effective heat insulator.
