Forum discussion
NC-2009 EAp2: Minimum Energy Performance
Hi,
Appendix G3.1.3.13 says "Minimum volume setpoints for VAV reheat boxes
shall be 2.15 L/s·m2 of floor area served or the minimum ventilation
rate, whichever is larger"
When you have a HVAC system which serves spaces which are required in the baseline to have demand controlled ventilation should the minimum volume set point for VAV be dynamic based on the minimum ventilation at any point or set based on the design minimum ventilation rate (e.g 7.5 cfm/person at peak occupancy).
Thanks
Vicky
LEEDuser is supported by our premium members, not by advertisers.
Go premium forTo post a comment, you need to register for a LEEDuser Basic membership (free) or login to your existing profile.
A portion of our building envelope is historic. Can we exclude it from our model?
For an existing building, do I need to rotate the model?
Our process load is higher than 25%. Do we have to justify that?
Our local code references ASHRAE 90.1-2010. Should I use that for my documentation, or 90.1-2007?
Can mezzanines open to floors below be excluded from the energy model?
How do I provide a zip code for an international location?
For a project outside the U.S., how do I determine the climate zone?
For a project outside the U.S., how do I determine the Target Finder score?
Do hotel rooms need automatic light shut-off control?
How commonly are the 90.1 mandatory compliance forms submitted as part of EAp2/EAc1?
The Section 9 space-by-space method does not include residential space types. What should I use?
Can the Passive House Planning Package (PHPP) be used to energy model for LEED?
Which baseline HVAC system do I use if my building has no heating or air conditioning?
Our project has a diesel backup generator. Should we include it in our energy model?
Can SHGC be higher in the proposed than in the baseline model?
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5909 thumbs up
May 27, 2014 - 11:53 am
Above the G3.1.3.13 minimum setpoint the VAV should be dynamic assuming the ventilation requirement is higher than this minimum. As the occupancy increases the ventilation rate goes higher up to the maximum value. If the ventilation requirement decreases below the G3.1.3.13 minimum then the volume setpoint must be maintained.