This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Optimization of a HVAC Evaporator Diffuser Using Advanced Shape Deformation Technology
Published May 20, 2007 by Institution of Mechanical Engineers in United Kingdom
To optimize an existing real or virtual design, several techniques can be applied such as one variable at a time (OVAT) or design of experiments (DOE). However, the most complex and time-consuming step for both methods is the iterative process of modifying the part (through CAD) and preparing for evaluation (meshing or rapid-prototyping).
The focus of this study is to explain a procedure that expedites the optimization process by utilizing arbitrary shape deformation (ASD) technology, coupled with computational fluid dynamics (CFD) and optimization tools to optimize an HVAC evaporator diffuser. CFD is a powerful tool that computes the flow field in the HVAC system and enables the geometrical optimization of components at a very early design stage.
The results of several studies have shown that non-uniformities of the flow field at the inlet of the evaporator have a negative impact on HVAC performance. The objective of this study is to maximize the flow uniformity at the evaporator inlet while reducing the overall pressure drop of the system by optimizing the shape of an HVAC evaporator diffuser.