Abstract
This study aims at the development of an optimal design tool using genetic algorithm (GA) and computational fluid dynamics(CFD). To represent 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 HVAC system in optimization inquiry. Building environment design should consider this relationship of active and passive control because HVAC system works until making indoor climate be at the target indoor climate when outdoor conditions changes.
