The use of seasonal accumulation of natural cold in modern air conditioning as a technology to reduce greenhouse gas emissions

Air conditioning systems are one of the main consumers of electric energy during the warmer months. Natural cold has been used for indoor air conditioning since ancient times. The possibility of harvesting snow and using accumulated cold for various purposes during the warm season is being studied in a number of countries, such as the USA, Canada, Japan, Sweden, Norway, China. The purpose of the article is to review the existing natural sources of cold for air conditioning systems, their classification and analysis of the reduction of CO 2 emissions when using natural cold for an airport air conditioning system. There are two main types of natural sources of cold: permanent action and accumulators of natural cold. The classification of air conditioning systems with seasonal accumulation of ice or snow, methods of insulation of open snow storage facilities are considered. The calculation of the reduction of CO 2 emissions was performed when using an open-type cold storage facility as a source of cold for the fan coil system at the Yuzhno-Sakhalinsk airport. The reduction in annual emissions is up to 61 tons of CO 2 per year, with an installed cooling system capacity of 157.4 kW or 0.39 tons per 1 kW of power. Thus, seasonal accumulation of snow or ice is a technology that makes it possible to reduce energy consumption and reduce greenhouse gas emissions.