Auto-sizing based-on latent loads

[aaron-boranian]

EnergyPlus can’t size equipment based on latent load. That is, it can’t save the results of a sizing run done at the dehumidification design condition and apply these results in conjunction with the sensible requirements when sizing coils and setting flow rates and supply temperatures. ASHRAE Standard 62 requires that dehumidification capable systems maintain 65% relative humidity in the zones at the dehumidification design condition with design cooling internal loads and zero solar load.

We propose adding a latent design day (to the current heating and cooling), saving the latent sizing results, and making them available to the air flow and coil sizing routines. Algorithms for use of these results in the coil sizing routines will be developed in consultation with Trane and FSEC.

Migrated from UserVoice feedback from @hongtz68