Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
Aaand you face the "problem" with IES-VE that it is confuses people by aligning with real-life. Most people have the eQUEST mentality w.r.t. spaces and thermal zones being the same thing. (I started in eQUEST too and still think it's great, but it's dated). 90.1 and other modeling standards were developed around the same.
If, in real life, you had a VAV box serving an office and a storage room, and the thermostat is in the office, you're absolutely going to have poor temp control in the storage room. The HVAC system has no idea what's happening there and no way to control for it.
While this SHOULD make us re-think what rooms are grouped together into zones and/or adjust your expectations re: resultant temperature in non-primary (I'm trying to get away from master/slave) spaces, that's annoying and overkill for 99% of situations.
Long story short, I do the same as Cory and use spaces instead of zones in the VE (mostly). Had to point out the irony though.. :)
| | 2 | No.2 Revision |
edit: There is a great 4-part series of articles from Timothy Moore at IES on resolving unmet load hours:
--- original post ---
Aaand you face the "problem" with IES-VE that it is confuses people by aligning with real-life. Most people have the eQUEST mentality w.r.t. spaces and thermal zones being the same thing. (I started in eQUEST too and still think it's great, but it's dated). 90.1 and other modeling standards were developed around the same.
If, in real life, you had a VAV box serving an office and a storage room, and the thermostat is in the office, you're absolutely going to have poor temp control in the storage room. The HVAC system has no idea what's happening there and no way to control for it.
While this SHOULD make us re-think what rooms are grouped together into zones and/or adjust your expectations re: resultant temperature in non-primary (I'm trying to get away from master/slave) spaces, that's annoying and overkill for 99% of situations.
Long story short, I do the same as Cory and use spaces instead of zones in the VE (mostly). Had to point out the irony though.. :)
%20cropped.jpg "Greg Collins")