My intent is to model a building with a unglazed transpired solar collector. There is an EnergyPlus object SolarCollector:UnglazedTranspired but it is not yet supported by OpenStudio. I generated my base building code using OpenStudio and then exported the IDF.

Within the IDF I changed outside boundary condition to OtherSideConditionsModel for the BuildingSurface:Detailed that the solar collector is located.

I created the SurfaceProperty:OtherSideConditionsModel with GapConvectionRadiation modeling type.

Then added the SolarCollector:UnglazedTranspired object. I cross referenced the appropriate boundary condition model and building surface name that were previously discussed. Inlet, outlet and setpoint node were referenced. Zone node name is the only input I am unsure about and have tried several logical options without success.

The error I receive, shown below, states that the object is being ignored.

* Warning * The following lines are "Unused Objects". These objects are in the idf * ~~~ * file but are never obtained by the simulation and therefore are NOT used. * ~~~ * Each unused object is shown. * ~~~ * See InputOutputReference document for more details. *** Object=SOLARCOLLECTOR:UNGLAZEDTRANSPIRED=JABS HALL UTSC

Is there an incompatibility with the EnergyPlus SolarCollector:UnglazedTranspired object and how OpenStudio generates the IDF code?

Has anyone had this issue before?

Why would a completely defined object be unused in EnergyPlus?

I would appreciate any help or suggestions. Thank you!