Ice formation of the building with a residential pitched roof and a cold attic space at the cold climate in the millionplus city

Heat supply, ventilation, air conditioning, gas supply and lighting

Ice on the pitched roofs threatens pedestrians and vehicles parked near buildings. This article describes the scheme of ice formation on the roofs of buildings with a pitched roof and a cold attic. To determine the conditions for the ice formation in the building a mathematical model and an equation of the thermal balance of an unheated attic room are developed. A set of measures to normalize the temperature and humidity regime in an unheated attic is developed. The dependences of the air temperature in the attic on the outside air temperature before and after the implementation of the proposed set of measures to normalize the temperature and humidity regime are defined. The developed set of measures reduce the thermal energy consumption during the heating period due to an increase in the level of thermal insulation of enclosing structures separating the cold attic from heated rooms, as well as to improve the microclimate parameters on the upper floors of operated buildings. Unlike active protection methods (usually implemented in the form of heating cables, films, and mats), the proposed complex of passive engineering and technical solutions that do not require energy resources during operation can be defined as energy saving and sustainable. The results obtained will be applicable to buildings located in the cold climate zone (D – cold climate according to the international Köppen Climate Classification).