How can I confirm that my model is working properly?
I was given a model that was fully operational.
So I removed the whole functional, yet obsolete, HVAC system and inserted a new one with ideal loads, for I need to know what are the exact loads that the building is experiencing and refurbish the envelope accordingly.
The thing now is that, after running my new model and comparing it with the former one, I seem to have loads that are around 4 to 7 times higher for each zone.
I mean, the former HVAC system was really poorly designed, but THAT poorly? It is also known that the building's envelope is terrible when it comes to thermal insulation.
Or is it likely that my new model isn't running properly?
What do you mean by "loads"? Do you mean the total heating energy for the year? Or the Peak Heating rate?
I was referring to the total heating energy.
I also solved my problem already. It seems like I was comparing the sensible heating energy of the initial problem with the total heating energy of my new model, which included the internal gains.
So instead of having 4 to 7 times difference, I have 2 to 3 now. Solved!