Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
I can answer part 1. In OS the DX cooling coils are allowed directly on the AirLoopHVAC structure. For example you can drag CoilCoolingDXSingleSpeed directly onto a node in the AirLoopHVAC supply path and everything will "just work". On the other hand, in E+ the DX coils need to be "wrapped" in CoilSystemDXCooling or a unitary system. OpenStudio is aware of this E+ requirement and wraps the DX coil in the coil system automatically when the idf file is created.
If you want to use some of the features introduced by the coil system such as the advanced dehumidification modes, I suggest that you consider the AirLoopHVACUnitarySystem object that is exposed in the OpenStudio API. You can wrap your DX coil as a single component in the unitary and achieve the same goals.
