Grunto šilumos panaudojimo technologijos oro šldymui ventiliacinėse sistemose

Abstract

Application of soil collector in heating and ventilation systems is one of the most efficient ways of reducing thermal energy consumption for heating buildings. Heating of the supplied air to the positive temperature throughout the season is ensured by locating soil collector under the surface at the depth of at least 2 m. Simulation has revealed that approx. 80% of heat is transferred to the air purged within 30 to 35 meters down the collector. Thus, two half rings layout should be used for the systems with air debit under 300 m 3 /h, while systems with higher debit should be equipped with soil collector using Tichelmann harp grid system. As a part of individual residential building heating and ventilation system, soil collector generates heat energy reaching 2,700 kWh, cooling energy – aprrox. 200 kWh per year.