ADVANCEMENTS IN 3D PRINTING TECHNIQUES FOR LOW-SPEED AERODYNAMICS IN VEHICLE VENTILATION – PART 1

Abstract

This scientific study focuses on the comparison of various 3D printing techniques for the fabrication of air diffusers used in HVAC systems for vehicles. Specifically, the superiority of the Stereolithography (SLA) technique over other methods such as Digital Light Processing (DLP), Selective Laser Sintering (SLS), and Fused Deposition Modelling (FDM) is investigated. The goal was to determine the most effective and efficient approach for producing air diffusers prototypes that optimize indoor environmental quality and thermal comfort within vehicles. Through a comprehensive analysis and evaluation of the different 3D printing techniques, it is conclusively demonstrated that the SLA technique has advantages for this specific application. The accuracy of SLA enables the production of intricate geometries and fine details crucial for efficient air distribution and diffusion. The complexity of design features, including the unique geometry of lobed air diffusers that allows for increased air induction compared to conventional diffusers needed for the specific application, contributes to enhanced indoor environmental quality. In conclusion, this study confirms that the SLA technique surpasses DLP, SLS, and FDM in producing sensitive aerodynamics related components. The combination of accuracy, material versatility, complex design capabilities, dimensional stability, and efficient production make SLA the preferred choice for achieving optimal indoor environmental quality and thermal comfort. The findings provide insights for researchers, engineers, and manufacturers in the field of automotive ventilation systems, paving the way for advancements and using 3D printing technology in aerodynamics related applications.