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EnginSoft - Conference Abstracts
EnginSoft International Conference 2009 |
Using ANSYS FloWizard for performance evaluation of air distribution elements |
Gulobovic Marija - ENERGO |
Abstract |
With increasing degree of complexity in designing HVAC (Heating, Ventilation and Air Conditioning) systems and components for civil, industrial, naval and any other application, CFD has become a necessity, because it offers the possibility of understanding possible problems and anticipate performance before the component has actually been installed allowing the choice of a better solution. Thanks to the “visualization” of fluid mechanics and thermodynamic phenomena it is possible to determine the performances of a prototype, virtual or a real one, therefore allowing the development and optimization of products before their construction thus reducing post production modifications and improvement of existing products. With the use of CFD techniques it is possible to make highly reliable predictions of system behavior (in varying conditions and scenarios) thus making the design of HVAC systems much more effective and flexible than the use of traditional design methods. Such approach provides better choice and still brings all the optimizations to the systems in design phase guaranteeing a better product while reducing money and time spent. ENERGOGROUP is an engineering and consulting Group with extensive experience in a wide range of HVAC and electrical systems. Our engineers have hands-on experience with major equipment manufacturers, basic and industrial design as well as experience in client-site design management. Our services include mechanical and electrical design, CFD simulations, energy efficiency, commissioning, bidding and tender documentation and LEED Certification We used ANSYS Flowizard to create a virtual test room in which we simulated the air speed distribution from an air diffuser. In this virtual environment, it’s also possible to simulate heat sources, heat dispersion areas, and many other variables that may influence the flow. Whit the use of a virtual test room we were able to extract all the necessary data for any point in the room while in a real, traditional, test room, it's possible to make measurements only in the vicinity of the measuring sensor. We were also able to study air speed distribution inside the plenum of the diffuser and through the diffuser itself and identify the optimal dimension for a homogeneous flow and adequate outlet velocities. Air speed distribution inside the diffuser is fundamental in reducing noise and pressure losses while preserving the airflow capacity of the diffuser. With this data it is also possible to optimize any new diffuser design and compare alternative solutions. Although limited compared to more extensive, and expensive, software, Flowizard proved to be a reliable and highly usable tool for predicting airflow in air distribution. |
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