Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
So to be clear, you have quite a few options with VAV and with CV system types in eQuest, and a VAV system made to produce CV can still be made to vary supply temperature if that's desired. If you're looking for something like a classification to help you guide which system type options to consider for a given project, I may suggest investing a little time reviewing & absorbing the reference manual entries at and beneat: Volume 1: Basics > Air-side Components > Introduction > Air Systems. There you can find a descriptive/illustrated classification of airside system types. It isn't comprehensive but could help you get the lay of the land.
I wouldn't venture that I really have a favorite per se, however for system types which are natively CV, I probably utilize PTAC, UHT/UVT, PSZ and MZS/PMZS system types most often. It is a little extra work to make a VAV system type behave as though it's contant volume, however that effort can make parametric "VAV conversion" a relatively simple task, and for that reason primarily I and others do often leverage VAVS/PVAVS some fraction of the time where I intend to quantify savings potential for such an ECM.
I hope that's helpful!
