A method for determining the thermal resistance of a multilayer package of thermal insulation textile materials under blowing conditions

Introduction. Textile industrial materials, particularly in the form of multilayer packages, are extensively utilized as thermal insulation coatings in construction. One of the functional characteristics of these materials is their effective performance under conditions of strong wind exposure. The thermal insulation characteristics of textile thermal insulation materials depend on the value of their air permeability, while minimal thermal resistance is observed from the blowing side. Materials and research methods. The article lists methods that allow for the most accurate calculation of the thermal resistance of multilayer packages consisting of textile building materials under wind-blowing conditions. In this case, the thermal-insulating properties of the materials included in the package will depend on their air permeability. Results and discussion. Our mathematical model used for calculating the thermal resistances of building envelopes, containing thermal insulation packages based on textile materials, includes data on the air permeability of individual layers, as well as on the thickness of their air interlayers. The study presents a scheme of thermal insulation layers that shows temperature curves plotted on it. Stationary medium conditions were used as initial information on temperature distribution between the layers. Further research established that an increase in air velocity of the package affected by the wind influenced the reduction of thermal resistance. Conclusion. The study presents formulas used in determining the thermal resistance of insulating layers and interlayers of building envelopes affected by the wind, under conditions of frontal impact of the air flow, taking into account the established parameters of air permeability of the layers within the package.