How can aluminum alloy extruded thermal insulation tiles effectively reduce thermal bridging and improve overall building thermal performance?
Publish Time: 2025-09-25
In modern building energy-saving design, thermal bridging is a key factor affecting a building's overall thermal performance. Thermal bridging occurs when heat forms a "short circuit" within the building envelope through highly conductive materials, causing rapid heat loss or entry into the interior. This not only reduces insulation effectiveness but can also cause condensation and mold, impacting building durability and indoor comfort. Aluminum alloy, a widely used structural material, is often used in roofs, curtain walls, door and window frames, and other components due to its high strength, ease of processing, and corrosion resistance. However, aluminum alloy's inherently high thermal conductivity makes it prone to significant thermal bridging if improperly designed. Therefore, the use of scientifically designed aluminum alloy extruded thermal insulation tiles is an effective solution to this problem.
Optimizing structural design to achieve thermally isolated paths
To reduce the thermal bridging effect caused by aluminum alloy profiles, the most critical technical approach is to employ a "thermal-interrupting" design. By embedding low-thermal-conductivity insulation materials, such as polyamide or foam, within the aluminum alloy profile, the heat conduction path between the indoor and outdoor metal sections is physically separated, significantly reducing the overall heat transfer capacity of the profile. This "break-bridge" structure effectively blocks the rapid transfer of heat through the metal material, significantly improving the thermal resistance of the thermal insulation tile while maintaining structural strength. In actual application, the width, position, and material properties of the break strips must be precisely calculated to ensure optimal insulation performance under varying climate conditions.
In addition to structural insulation, aluminum alloy extruded thermal insulation tiles often incorporate high-efficiency insulation materials, such as rock wool, glass wool, polyurethane foam, or vacuum insulation panels, within or on the profile. These materials have extremely low thermal conductivity and further enhance the overall thermal insulation capacity of the tile. By tightly integrating the insulation material with the aluminum alloy profile to form a single, integrated composite component, the construction process is simplified while ensuring the continuity and integrity of the insulation layer, avoiding the potential thermal bridges caused by improper splicing in traditional construction. Furthermore, composite insulation layers can enhance the thermal inertia of the building envelope, mitigate the impact of indoor and outdoor temperature fluctuations on the indoor environment, and improve living comfort.
Improving airtightness and watertightness, reducing non-radiative heat loss
Thermal bridges are not only caused by the thermal conductivity of the material itself but are also closely related to air infiltration. The design of thermal insulation tiles requires careful consideration of joint treatment and joint sealing to ensure the airtightness and watertightness of the entire system. Through precision extrusion molding, aluminum alloy profiles achieve highly precise dimensional control. Combined with specialized sealing strips and waterproofing, they effectively prevent cold air infiltration and hot air leakage. Good airtightness not only reduces heat loss due to convection but also prevents moisture from entering the insulation layer, maintaining the long-term effectiveness of the insulation material and thus ensuring the building's energy-saving performance.
Systematic integration achieves overall building energy efficiency
The application of aluminum alloy extruded thermal insulation tiles should not be viewed in isolation but should be integrated into the building envelope system. In roof, wall, or curtain wall systems, thermal insulation tiles must work in conjunction with wall insulation, door and window systems, and ventilation equipment to ensure consistent thermal performance. Thermal simulation and node optimization using BIM technology can proactively identify potential thermal bridge locations and mitigate them during the design phase. Furthermore, standardized modular design helps improve construction efficiency, reduce on-site errors, and ensure the implementation of energy-saving designs.
Aluminum alloy extruded thermal insulation tiles, through their thermally isolated structural design, combined with high-efficiency insulation materials, enhanced sealing, and systematically integrated application, effectively reduce thermal bridging and significantly improve a building's overall thermal performance. In light of the "dual carbon" goals, promoting these high-performance building components will not only help reduce building energy consumption but also improve the quality of the indoor environment and promote the sustainable development of green buildings.
