Cooling and heating of buildings with ground source energy using earth-air heat exchangers

In the present paper, the earth-air heat exchanger specification including system utilization methods, channels configuration as well the most important merits and demerits of this system has been assessed completely. Then, passive systems which can be integrated with the underground channels has been assessed. Eventually, the significant recent decades studies on earth-air heat exchanger has been evaluate in order to obtain the worth and weak points of the past researches as well as proposing the novel ideas and set the further studies policy. The former studies evaluation shows that the earth-air heat exchanger can be utilized in summer for cooling purpose and also it can be used as preheating system in winter. However, this system has higher performance as a cooling system. The results indicated that by considering the earth-air heat exchanger in the hybrid systems, the total system performance will be improved incredibly.