Abstract
Simulation models of three types of air conditioning system combined with ventilation have been developed. The compared systems are as follows: (A) Duct type ventilation and air conditioner, (B) Duct type ventilation and air conditioner which inhale indoor air mixed with supply air (outdoor air), (C) Total heat exchange ventilation system and air conditioner. We calculated total energy consumption and indoor humidity in order to evaluate the effects of difference of ventilating system under various combinations of outdoor air temperature and humidity. As a result, we clarified that the annual energy consumption of system (B) decreases 3.4% compared with that of system (A), because the air conditioner operates efficiently by the indoor air mixed with the supply air. And we also clarified that the annual energy consumption of system (C) decreases 9.1% compared with that of system (A), because the air conditioning load decreases by the total heat exchanger of the ventilator.
