•Combined Diffuser(TWO-WAY Diffuser)
•Product Features and Description
1) Supply/exhaust is performed through one vent, and internal air is more smoothly circulated through the Coanda effect than existing vents, resulting in rapid ventilation.
2) Simplify ceiling and reduce ducts and ventilation materials
3) Effect of air shortening, reducing installation costs, and earthquake design intent.
The main purpose of this study is to examine the ventilation function and economic feasibility of the Combined Air-diffuser Ventilation System (CAV), in which the exhaust air opening and the supply air opening are combined into one module. In order to identify the properties of the CAV, a mock-up test and CFD (Computational Fluid Dynamics) were employed. The results of the study are as follows. 1) The physical reproducibility and credibility of CFD were confirmed by subjecting the mock-up test and CFD to a benchmark test. 2) CFD was used to investigate the ventilation function of an existing ventilation system and the CAV. SVE3 and SVE6 were used for ventilation. 3) The SVE3 and SVE6 of the CAV were similar to the existing ventilation system. 4) In the assessment of economic feasibility according to the duct’s length and used components, the duct’s length had decreased by approximately 68%, the damper by approximately 50%, and the diffuser by about 40-50% for the CAV in comparison to the existing ventilation system. 5) According to the above results, the CAV has ventilation functions that are similar to those of the existing ventilation system. Nevertheless, it was confirmed that its economic feasibility was higher due to the reduction in the duct’s length and the number of necessary components.