Hi All again.
Thanks so much for the previous responses. And indeed for the cross reference here: Confused about Cooling Energy when Using Operable Windows? - #14 by SaeranVasanthakumar
However, I have some remaining questions about the Energy Balance reporting.
I have tried to set up a model to produce an energy balance, and it does this well if I ignore Natural Ventilation.
It’s a well insulated high mass building placed in Europe. The windows are labelled as operable for the model producing this energy balance graphic. Some minor disparities between heat gain and loss reflected in the "Storage"term.
However, if I introduce a ventilation control object after the ideal loads into the room, then the error term represented by "Storage"become huge.
The difference in the modelling between these two situations is THIS:
versus THIS:
I have tried altering the settings on the Vent control element with no significant change.
While my past practice with EnergyPlus has been to set
Outdoor Temperature above which the windows are opened for cooling is 15C
Indoor Temperature above which windows are opened for cooling is 22C (Heating below Indoor 18C)
Indoor temperature above which windows close and air conditioning turns on is 26C.
I have tried making the Cooling on Temperature 28C, while windows close at 26C.
AND
Outdoor Temperature below which windows close 10C.
Nothing changes.
Varied inputs to the Vent Control also do not make a significant difference (including turning off “Cross Ventilation”
Any and all comments welcomed
Michael.
If I introduce Ventilation control