Comparison and Sensitivity Analysis of Air Conditioning Peak Load Calculation Results of BIM and Conventional Special Software

<p>In recent years, building information modeling (BIM) has been rapidly applied in the field of construction, and demands for more efficient design and construction are increasing. Compared to conventional 3D CAD, one of the more advantageous features is that it can be expected to save labor in input work by using various data in BIM for technical calculations such as structural calculation and air conditioning load calculation. However, because various specialized technical calculation tools have been used in the past, problems may occur if there are differences between the results of these tools and those of BIM. Therefore, it is important to understand the characteristics of the computational function of BIM. The purpose of this study is to clarify the differences and characteristics of the calculation results between BIM and specialized software in air conditioning load calculation. In this study, the latent heat load was induced only by the human body when the draft air volume was low; therefore, there was no significant difference between the three software in sensible heat factor (SHF). Therefore, it is considered that there is no particular problem even if the load calculation function of the BIM software is used for the calculation of the blown air volume and the load for each space required for selecting the indoor unit. However, it is necessary to confirm and utilize the calculation results considering the fact that the maximum cooling load may occur in months other than July and August.</p>