AIR-EARTH EXCHANGER STUDY IN REAL SITE EXPERIMENTATION AND SIMULATION

The aim of this study is to present different possibilities of use off ered by an air-earth exchanger. With the help of real site experimenta tion from which a simplified simulation model has been validated, the efficiency of this system when it is coupled with an individual house is demonstrated. It is shown that this system can be used to save 10% of house energy consumption by preheating fresh air in winter, to avoi d freeze risks in a dwelling during winter, to refresh air and to impr ove comfort conditions in summer. For this case, it keeps house ambien t temperature under a value of 27 degrees C without using a convention al air-conditioning system. Finally, actual limits of the study which has only been carried out for the specific case of house and air-earth exchanger are given.