Heat insulation refers to materials or systems used to reduce the transfer of heat between two areas with different temperatures. Its main purpose is to keep heat from entering a space when it is hot outside, or from escaping when it is cold, thereby maintaining a stable and comfortable indoor temperature.
Heat insulation works by slowing down heat transfer through conduction, convection, and radiation. Insulating materials are usually poor conductors of heat and often contain trapped air or reflective surfaces that minimize heat movement.
Heat insulation is widely used in buildings, roofs, walls, ceilings, pipes, industrial equipment, and appliances to improve energy efficiency, reduce cooling and heating costs, protect structures from extreme temperatures, and enhance comfort.