Do you know the insulation principle of fiberglass sheet, a little expert in heat insulation?
Publish Time: 2024-11-22
The reason why fiberglass sheet can effectively keep warm is mainly due to its unique structure and material properties.1. Low thermal conductivity of the materialThe core material of fiberglass sheet is glass fiber, which has extremely low thermal conductivity. Thermal conductivity is an indicator of the thermal conductivity of a material. The lower the value, the better the thermal insulation performance of the material. The thermal conductivity of glass fiber is very low, which means that it can effectively prevent the conduction of heat, thereby reducing heat loss.2. Air insulation of porous structureFiberglass sheet contains a large number of tiny pores inside, which are filled with air. Air is a poor conductor of heat and has extremely low thermal conductivity. These tiny pores form many air layers, which effectively block the transfer of heat. Because the transfer of heat mainly depends on thermal conduction, this porous structure greatly reduces the speed of heat conduction.3. Reflective heat radiationDuring the manufacturing process, fiberglass sheets are usually coated with a layer of reflective material, such as aluminized film or special coating. These coatings can reflect part of the heat radiation, further reducing the heat transfer through radiation. Heat radiation is another main way of heat transfer, especially in high temperature environments, reflecting heat radiation can significantly improve the insulation effect.4. Heat convection blockingBecause the pores of fiberglass sheets are very small, it is very difficult for air to flow through them. Air convection is the third way of heat transfer, and the tiny pore structure blocks air convection, thereby reducing heat transfer.5. Comprehensive insulation effectThe insulation principle of fiberglass sheets is the combined effect of the above mechanisms. The low thermal conductivity glass fiber material, the porous structure of the air layer, the coating that reflects heat radiation, and the tiny pores that block heat convection, these factors work together to enable fiberglass sheets to be highly efficient in heat preservation.6. Application fieldsDue to its excellent thermal insulation performance, fiberglass sheet is widely used in building insulation, pipeline insulation, refrigeration equipment, industrial furnaces and other fields. It can not only significantly reduce energy consumption, but also improve the operating efficiency of equipment and extend the service life of equipment.In summary, the thermal insulation principle of fiberglass sheet is mainly to use its material properties of low thermal conductivity, air insulation of porous structure, coating that reflects thermal radiation and tiny pores that block heat convection to achieve efficient thermal insulation effect.
