Tyhjiöeristys

Tyhjiöeristys refers to a type of thermal insulation that utilizes a vacuum to minimize heat transfer. It is a highly effective method for preventing heat loss or gain. The principle behind tyhjiöeristys is that in the absence of matter, conduction and convection, two major modes of heat transfer, are significantly reduced. Heat can only be transferred through radiation.

This insulation technology typically involves encasing a core material or structure within a sealed, airtight barrier. The air is then evacuated from the space between the core and the barrier, creating a vacuum. The effectiveness of the insulation is directly related to the quality of the vacuum achieved and the ability of the barrier to maintain that vacuum over time.

Common applications for tyhjiöeristys include high-performance refrigerators and freezers, vacuum flasks (thermoses), and specialized building insulation where extreme thermal resistance is required. The materials used for the vacuum barrier need to have low thermal conductivity and be able to withstand the external atmospheric pressure. While tyhjiöeristys offers superior insulation properties compared to conventional materials like fiberglass or foam, its manufacturing process can be more complex and costly. The durability and longevity of the vacuum seal are critical factors in its sustained performance.