Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
In my experience in comparing OS models to eQuest models it seems like OS results in slightly less (~10%) HVAC energy consumption when compared to a similar system in eQuest. Now this is just a estimation from having several projects with an eQuest and OS models. This could be for hundreds on reasons, and I have not spent the time to try to figure out exactly why this has been the case in the models I have seen.
Lighting and plug loads should line up perfectly due to the energy use from these only being influenced by the load and schedule, like you mentioned above.
I could not predict how the total HVAC energy use in your eQuest and OS model will turn out. HVAC loads are met differently in the two programs, not to mention different curves and often times different inputs for the exact same system between the two. Due to the complexity of the system, and the fact you used workarounds in eQuest, to be able to predict which model will use more energy would be very difficult.
When you have completed both models I would be very interested in the comparison and it would be great if you could follow up with the community here on Unmet Hours.
