THE USE OF THE THERMAL COUPLING COEFFICIENT IN ESTABLISHING THE THERMAL PERFORMANCE OF AN APARTMENT

Abstract

Similar to the mechanical behavior of the resistance structure of a building which is completely characterized by the stiffness matrix of the structure, the thermal performance of a building is fully characterized by the thermal coupling coefficients matrix of the functions in a building and air exchanges matrix between the functions in the building. Determination of thermal coupling matrix is made in accordance with EN ISO 10211:2007 standard, based on spatial temperature field in thermal stationary regime, inferred for a spatial network that includes the building and the ground on which the building is placed [1]. The vertical planes that are sectioning the land around the building are considered at a distance of 2.5 x width of the building on all sides, and in the soil to a depth of 7 m. The paper will present a method for the calculus of the energy performance of buildings that uses the above mentioned matrixes.