Indoor Ventilation system using the soil heat

摘要

An underground heat utilization indoor ventilation system is disclosed. The indoor ventilation system according to the present invention includes an air tunnel which is buried in the ground under the foundation of the building and recovers heat from the outside air introduced through the intake portion exposed on the ground to cool the outdoor air, A cooling air supply line extending from the air tunnel to an indoor space inside the building and a fan for generating a suction force for allowing the outside air to flow into the indoor space to be ventilated through the intake portion, the air tunnel, and the cooling air supply line And each of the cooling air supply lines extended to the indoor space is provided with one valve that is independently controlled to be opened and closed.;