THE ECOLOGICAL EFFICIENCY ANALYSIS OF COMBINED AIR CONDITIONING SYSTEMS

Євген Іванович Трушляков, Андрій Миколайович Радченко, Сергій Георгійович Фордуй, Анатолій Анатолійович Зубарєв, Сергій Анатолійович Кантор, Веніамін Сергійович Ткаченко

Abstract


Since the supply air conditioning systems operation effect depends on the cooling duration and depth, it is quite justified to estimate it by the value of the specific annual cold production, which is the product of the necessary cooling capacity for cooling the air to the target temperature multiplied by duration of operation at a given cooling capacity and, thus, considers current climatic conditions. Obviously, the realization of the cooling potential (air conditioning) of the ambient air depends on the installed (design) cooling capacity of the air conditioning units, which, in turn, must considering fluctuations in thermal loads by the current variable thermal and humidity parameters of the ambient air. With an increase in the temperature of the ambient air, fuel consumption for the production of a unit capacity (mechanical/electrical energy) increases, and, accordingly, the more harmful substances are removed to the atmosphere with exhaust gases. To reduce the negative impact of unproductive fuel consumption during the operation of air conditioning systems at elevated ambient temperatures, resort to various methods for determining the installed cooling capacity of the installation, to reduce it. In the work, the ecological efficiency of air cooling is studied considering the climatic operating conditions for the Kyiv city that are variable during the year. The annual reduction in emissions of carbon dioxide CO2 and nitric oxide NOX was chosen as indicators for assessing the environmental effect of air cooling. It has been shown that when choosing the installed cooling capacity, by the method of ensuring the maximum growth rate of the annual cold production considering the increase in the installed cooling capacity of the chiller, there is a greater reduction in specific fuel consumption compared to the method of choosing the maximum annual cold production, respectively, and harmful emissions. When comparing the methods for choosing the design cooling capacity, air cooling to 15 °C provides a reduction in carbon dioxide CO2 emissions of more than 34 t for 2017 for the climatic conditions of Kiev, in favor of the method of ensuring the maximum growth rate of annual cold production, and nitric oxide NOX – about 5,8 t.

Keywords


air conditioning; cooling capacity; ecology; climate

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DOI: https://doi.org/10.32620/aktt.2019.5.03

Copyright (c) 2019 Євген Іванович Трушляков, Андрій Миколайович Радченко, Сергій Георгійович Фордуй, Анатолій Анатолійович Зубарєв, Сергій Анатолійович Кантор, Веніамін Сергійович Ткаченко