The thermal principle of external wall rock wool board quickly occupied the market of external wall thermal insulation materials - rock wool composite board and color steel composite board. Many enterprises choose more external wall thermal insulation materials during the renovation of factory buildings. In our country, the external wall building thermal insulation engineering, has been ordinary concern, rock wool composite board in the external wall thermal insulation building engineering, according to the product's own advantages, according to the half of the thermal insulation materials.
Rock wool composite board and color steel composite board are commonly used in exterior wall thermal insulation engineering. In this case, the thermal principle of products and the detailed use of products in many industries must be mentioned. The following article will focus on four aspects to discuss the thermal principle of rock wool composite board: rock wool board and similar color steel composite board. The first thing to be familiar with is the classification, mechanism and use of rock wool board as thermal insulation material for building exterior wall.
In the nature on which human beings depend for existence, there are three ways of heat conduction: conduction, convection and radiation. According to the three conduction mechanisms of heat transfer and the principle that the heat transfer of building exterior wall is transmitted from indoor to outdoor in summer and from indoor to outdoor in winter, it is advisable to classify the heat insulation of building exterior wall exterior envelope into three categories: partition type heat insulation, reflective type heat insulation and reflective type heat insulation.
Let's talk about the thermal calculation of rock wool composite board as the thermal insulation material of building exterior wall.
After calculation, it is fully demonstrated that reflective and reflective thermal insulation coatings have a certain thermal resistance value R, and after the film reaches a certain thickness, the thermal resistance value is only related to the reflectivity, heat storage coefficient and surface temperature of the film, and has nothing to do with the thickness of the film.
In summer, the higher the reflectivity is, the lower the surface temperature is, and the greater the thermal resistance is. In winter, the greater the thermal storage coefficient is, the higher the surface temperature is, and the greater the thermal resistance is. At the same time, through thermal calculation, the application scope of reflective and reflective thermal insulation coatings is further explained.