See all forum discussions about NC-2009 EAp2
 Subscribe to new posts about NC-2009 EAp2 Post a new question aboutNC-2009 EAp2
See LEEDuser’s guidance on NC-2009 EAp2»
FAQs about EAp2 :

Our project has a large process load—75%. Despite our efforts to make an efficient HVAC design, the cost savings are minimal. What can we do to earn this prerequisite and be eligible for LEED certification? Is there any flexibility in how we model the p

Can SHGC be higher in the proposed than in the baseline model?

Our process load is higher than 25%. Do we have to justify that?

Do I need to justify the electrical and fuel rates I am using in my model?

Our local code references ASHRAE 90.1-2010. Should I use that for my documentation, or 90.1-2007?

Can I claim exterior lighting savings for canopy lighting even though a baseline model cannot include shading elements?

The project is built on a site with existing exterior lighting installed. How should this be accounted for?

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?

Is it acceptable to model a split-type AC with inverter technology compressor as a heat pump, like modeling VRF?

Can the Trace 700 'LEED Energy Performance Summary Report' by uploaded to LEED Online in lieu of the Section 1.4 tables spreadsheet?

A portion of our building envelope is historic. Can we exclude it from our model?

Which baseline HVAC system do I use if my building has no heating or air conditioning?

For an existing building, do I need to rotate the model?

View answers »

Forum discussion

NC-2009 EAp2:Minimum Energy Performance

Modeling Energy Recovery Wheel

Hi, I am modeling a building that uses an energy recovery wheel for energy savings. 1)For the Proposed Building: - The device has two fans, one for the injection of outdoor air into the building and which power I modeled in the Proposed Building as the ventilation fan of the DOAS. - It also has the exhaust fan for bathroom exhaust, which I modeled as the ventilation reclaim fan power. 2) How do I have to model this two fans in the Baseline?, the corresponding systeme is System 4. thank you, Paula
0
Post a reply

You rely on LEEDuser. Can we rely on you?

LEEDuser is supported by our premium members, not by advertisers.

Go premium for $15.95  »

Thu, 02/11/2021 - 19:53

The Baseline would not be modeled with a separate DOAS at all. You would model exhaust fans, but the exhaust fan power is already accounted for in the Baseline fan power allowance from Section G3.1.2.9, so you would need to reduce the supply fan power to account for this to keep the total supply + exhaust power equal to the allowance.

Fri, 02/12/2021 - 13:04

Thank you Tyler

Add new comment

To post a comment, you need to register for a LEEDuser Basic membership (free) or login to your existing profile.