Optimization of hybrid air-conditioning system with natural ventilation by GA and CFD

This study aims at the development of an optimal design tool using a genetic algorithm (GA) andcomputational fluid dynamics (CFD). To represent a realistic building environment, random variables(fluctuating outdoor conditions), passive control variables (model variables) and active control variables (HVAC system) were set up. A combination of designs are determined based on the relationship between the fluctuating outdoor conditions and the HVAC system in the optimization inquiry. Building environment design should consider this relationship of active and passive control because the HVAC system works until the indoor climate reaches the target indoor climate when outdoor conditions are changing.