I am working on a energy modeling for a relocation industry factory, The entire space is conditioned. Since the air clean condition of production area has a high requirement, the factory design 100% outdoor air to meet the requirement before. With the improvement of the production process, now the factory allow to design 30% outdoor air and 70% recycle air to meet the requirement. And now, I have two questions:
1. Can this kind of AHU system be looked as process system?
2. If can be looked as process system, the new design outdoor air flow rate is different with old design. How to model it in the baseline modeling?