Review article

The paper presents the results of experimental research of the hydrothermal condition of external walls of buildings during the scheduled regulation of heating and ventilation systems. The controlled reduction of temperature in the buildings with a non-permanent stay of people makes it possible to considerably decrease the energy consumption and provides significant savings of operational costs. An experimental installation and methodology of research are described. Indicators of energy, which can be saved in working days and at weekend, are defined. It is proven that non-stationary climate control in the heated premises does not lead to any essential fluctuations of temperature in the enclosing constructions, especially in case of applying the outer insulation.