| Title |
The Proposal of a Quantitative Evaluation Method on Mixing Loss in the HVAC System Design |
| Keywords |
Energy conservation ; 에너지 절약 ; Mixing loss ; 혼합손실 ; Setpoint temperature differences ; 설정온도차 ; HVAC system ; 공기조화설비 ; CFD ; 전산유체역학 |
| Abstract |
It is a serious subject for energy conservation to prevent the energy loss caused by mixing of heated and cooled air jets in a building which two types of air- conditioning systems are adopted in perimeter and interior zone. The purpose of this paper is to clarify the quantitative and qualitative mechanisms of the mixing loss and to propose preventive methods for it.In this paper, by using the dynamic heat load calculation method, heat extraction loads of a typical office building in Pusan are calculated. According to the results, numerical simulation based on the computational fluid dynamics were performed in order to measure the mixing loss in physical size HVAC system. Then, the distributions of air temperature and velocity are analyzed in order to grasp the relations by setting temperature differences influence on the mixing loss. |