Numerical Analysis of Range Hood Ventilation System: Fluid-dynamics Efficiency Impact on the Energy Label

The design of the newest kitchen house appliances systems is strongly influenced by the important objective of environmental impact reduction. Extensive studies are being carried out on the range hood ventilation system with the purpose of improving the efficiency in order to decrease both the energy consumption and pollutant emissions. On the other side the European Commission, by new regulations and by the energy labels on the products, is motivating companies to optimize the main kitchen range hood through the utilization of new technologies. The fluid-dynamic efficiency improvement in the ventilation system is one of the main topics to which numerous efforts are being devoted. The present work mainly focuses on the implementation of a numerical model for the ventilation system, characterized, in modern range hood, by a blower and a impeller. The numerical simulation, performed by using computational fluid dynamics (CFD) methodology, was used to optimize the blower fluid dynamics efficiency maintaining the same motor system.