This paper is based on findings resulting from ASHRAE Research Project RP-1017.

Earlier we demonstrated the effectiveness of multimedia and advanced presentation techniques such as 3D computer graphics, visualization and animation techniques (Akleman 2002). The previous paper was intended to serve as a model and guide for the broad use of these techniques in other ASHRAE publications. However, the 3D Models and Animations that were developed for ASHRAE publications has a unique set of problems that are different from classical 3D modeling and animation problems. Our experience with this project convinced us that these models and animations cannot be created without close collaboration between ASHRAE engineers and animation specialists. Therefore, in this paper, we expand the discussion initiated in the first paper by presenting some of the unique sets of difficulties we have faced during the process using two case studies, modeling and animation, of: (1) Rolling Piston and (2) Twin Screw Compressors.

Units: Dual