Thinking about another way:
If you have 1000 zones, and each has 1 unmet load hour at a different time, you cannot comply with 90.1
The Building Performance Team
James V. Dirkes II, P.E., BEMP , LEED AP
1631 Acacia Drive NW
Grand Rapids, MI 49504
616 450 8653
From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of jvd2pe
Sent: Thursday, December 01, 2011 3:00 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Unmet Load hours
Dear Forum,
Feedback requested, please!
It strikes me that an ASHRAE 90.1 "Baseline" model with a lot of zones is more likely to have higher total unmet load hours just becasue it has more zones.
For example, there's a higher statistical likelihood that one zone out of 50 will have a problem than one zone out of 5.
On the other hand, if all of the zones are sized using the same criteria, maybe not.
It sure seems like the model I'm working on now is making my life difficult trying to get unmet load hours below 300!
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