Optimization of natural illumination and the savings of energy of educational rooms concerning reconstruction of National university "Lviv polytechnic" buildings

A problem of windows reconstruction, that necessary to do with observance of operating normative requirements became actual. Low level of resistance of air permeability is conducted to significant periodic and non-uniform receipt in a premise cold and warm air during a year. However, high level of natural illumination without engineering means of regulation creates light discomfort in the rooms. There is possible to reach optimization of conditions of natural illumination and the saving of energy in educational rooms due to rational reduction of windows size.