Optimization of Heating and Cooling EUI Based on Void Space Types in Office Buildings : Focusing on Medium and Large Office Buildings

Purpose: Energy-related regulations are expanding both at home and abroad as interest and importance in carbon neutrality increase around the world. In Korea, various certification systems are mainly regulated by public buildings, and various systems and measures are also being implemented in office buildings to save energy. Although there is no regulation on private buildings yet, it is possible to expand in the future, so consideration should be given to the design or composition for energy conservation among the design elements. Method: In this paper, among the elements that make up a building, there are elements that can be used as a resting space inside a building, such as atrium, void, balcony, or as a part of a dedicated space, and when these spaces are properly used, they can help with lighting and ventilation, which has the effect of reducing the operating energy of the building. Result: Accordingly, by observing the area ratio, shape, and location of the void space in the building, analyzing the difference, and deriving an optimal model, we would like to present guidelines for the shape and arrangement of the void space when designing a building. The study produced an algorithm using Rhino’s Grashopper to create a semi-automation simulation and conducted eui analysis according to various variables.