KEY FACTORS OF INFLUENCE OF ENGINEERING EQUIPMENT OF BUILDINGS ON CARBON FOOTPRINT INDICATORS
Reducing the carbon footprint is one of the most important tasks of our time, the solution of which will bring us closer to an acceptable level of anthropogenic impact on the biosphere. The legal prerequisites for the development of the climate agenda in the country, the development of climate projects and energy-saving technologies in all segments of the economy are being created . Engineering equipment of buildings is a major consumer of materials and energy resources, makes a significant contribution to greenhouse gas emissions. The development of a scientifically based method for predicting the carbon footprint will allow to formulate requirements for engineering equipment at all stages of the life cycle of the building. The classification of building elements that form the "carbon footprint" is carried out. The key factors of the influence of engineering equipment of buildings on the carbon footprint indicators are analyzed. It is noted that due to the warming of the climate, the role of cooling systems in the structure of energy consumption of the building is increasing. The environmental efficiency of refrigeration systems is determined by a combined indicator that takes into account direct and indirect greenhouse gas emissions. For an objective comparison of refrigeration systems, it is proposed to use energy consumption indicators reduced to the consumption of primary fuel. A comparative calculation of the carbon footprint with various options of the refrigeration equipment in a shopping and entertainment center is carried out. Refrigeration machines with full and partial heat recovery in an air-cooled condenser (an option for heating water for hot water supply), as well as without heat recovery, are considered. It is shown that heat recovery improves the environment by reducing carbon dioxide emissions by 1.9 ÷ 2.2 times.