Analysis of the Energy Efficiency of the Earth-To-Air Heat Exchanger

Abstract

This article represents the results of experimental studies of the temperature regime during long-term operation of the earth-to-air heat exchanger. The average annual, total monthly and average daily specific amounts of heat extracted from the soil or released into the soil mass, respectively, depending on the cold or warm periods of the year, were determined. The analysis of the given data allowed to conduct a monthly assessment of the energy efficiency of the use of the earth-to-air heat ex-changer. It is noted that the largest thermal contribution occurs in the middle of the warm and cold periods of the year, when the largest difference in temperature of the outside air and the soil massif is observed. The use of earth-to-air heat exchangers is one of the necessary tools in order to lowering the energy consumption for mod-ern air-conditioning systems of buildings due to their energy efficiency.