Our proposed building has no cooling system installed; it is ventilated naturally. Now Appendix G says to model the proposed building like the baseline bldg system. That means with a VAV.
In other buildings that are cooled by chilled ceilings in the office areas and not cooled in toilets and storage I always modeled baseline and proposed building like the actual design (not cooled).
Now, can I ignore the cooling system if the whole building has no cooling like I did in partially cooled building or do I have to implement a VAV cooling even if there is no space for this system?
Would appreciate any helpful comment or discussion!
Johannes
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5907 thumbs up
September 5, 2012 - 1:25 pm
There is an established work around for this. You are allowed to set the cooling set point in both models very high so that the cooling systems never operate. Given this possibility it makes no sense to go through the exercise of modeling cooling systems which never run. If you explain this to the reviewer they should let it slide.
If you wish to claim any energy savings for natural ventilation be sure to follow the example in the Advanced Energy Modeling Guide for LEED.