Storage Heat in Buildings Elements is an Option to Reduce the Energy Consumption in Buildings Keeping the Comfort Parameters?

Storage energy in buildings elements, in residential buidings, is a way to obtain low energy consumption for heat the buildings and keep the comfort parameters to the minimum require. We present a calculus of heat variation in walls with differents structure using Fourier law of conduction. In a building if heat plant operate continuu and the external temperature is variable the heat transfer cause the variation of temperature on the surface of external wals (buildings elements) and the variation of internal temperature, variation of internal temperature more than. The variation of internal temperature is adicted by the thermotechnical characteristics of constructions materials use to realize the building.