How to evaluate the insulation performance of steel prefab buildings?

The insulation performance evaluation of steel prefab buildings are mainly carried out through the following aspects:

Material selection: The insulation performance of steel prefabricated building first depends on the selected insulation material. Common insulation materials include rock wool, glass wool, polyurethane, etc. The thermal conductivity, thermal resistance, and other parameters of these materials will directly affect the insulation effect of the building. Generally speaking, materials with lower thermal conductivity and higher thermal resistance have better insulation performance.

Structural design: In addition to material selection, the structural design of steel prefab building is also an important factor in evaluating insulation performance. Reasonable structural design can effectively reduce thermal bridge effects and improve the insulation effect of buildings. For example, optimizing the wall structure, increasing the thickness of the insulation layer, and improving the airtightness of doors and windows can all improve the insulation performance of steel prefab buildings.

Thermal performance calculation: In order to accurately evaluate the insulation performance of steel prefab buildings, thermal performance calculation is also necessary. This usually includes the calculation of heat transfer coefficient (U value) and thermal resistance (R value). The heat transfer coefficient represents the amount of heat passing through a unit area per unit time, while the thermal resistance represents the amount of heat passing through a unit area per unit temperature difference. By calculating these parameters, it is possible to determine whether the insulation performance of the building meets the design requirements.

On site testing: In addition to theoretical calculations, on-site testing is also an important means of evaluating the insulation performance of steel prefabricated buildings. Common on-site testing methods include infrared thermal imager testing, temperature recorder testing, etc. These testing methods can intuitively reflect the insulation effect of buildings in actual use, providing a basis for improving design.

Overall, the insulation performance evaluation of steel prefabricated building is a process that comprehensively considers multiple aspects such as material selection, structural design, thermal performance calculation, and on-site testing. Through scientific evaluation methods, it can be ensured that steel prefab buildings have good insulation performance, providing residents with a comfortable and energy-saving living environment.