Push-pull Mechanical Ventilation System with Heat Exchanger Controlled by Intake Air Temperature

The purpose of this study is the development of a push-pull ventilation system, in which the air supply and exhaust amount is individually controlled by indoor and outdoor temperature difference, to maximize the ventilation performance and energy efficiency. By individually controlling the air flow rate of the supply and exhaust depending on the demand, the fan operating energy consumption is significantly reduced. High performance heat exchanger is also adopted. During non-heating period, it is possible to reduce indoor chemical contamination occurring with wall infiltration, by halving the amount of exhaust and pressurizing the room.