See all forum discussions about NC-v4 EAp2
 Subscribe to new posts about NC-v4 EAp2 Post a new question aboutNC-v4 EAp2
See LEEDuser’s guidance on NC-v4 EAp2»
FAQs about EAp2 :

Do the required savings for this prerequisite (and credit) need to come only from building energy, or also process loads?

Our project doesn't have enough energy savings to earn the prerequisite. Can we get there by incorporating onsite renewables?

Our proposed design has insulation R-values that are below those prescribed by ASHRAE 90.1-2010. Can we still meet the prerequisite?

View answers »

Forum discussion

NC-v4 EAp2:Minimum energy performance

Fan - interior ventilation EFLH

Default Avatar
Project Manager
LEEDuser Basic Member
14 thumbs up

Hi,

i'm dealing with EFLH for interior ventilation in baseline and propose, over 8000h/year, double than another ones such us space cooling and receptacle EFLH, <4000h/year?

These figures from HAP Carrier software. if anyone has got this like me. will appreciate if you can leave any suggestion or comment. 

Thanks!

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  »

Profile picture for user sheffer
Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Thu, 01/11/2018 - 18:07

Hard to say what the issue might be with so little information to go on. Check the schedules, check the nature of the fans (constant vs variable), check the loads. Don't necessarily compare this to other end uses. Check to see if the results make sense relative to the inputs for that end use.
Default Avatar
Project Manager
LEEDuser Basic Member
14 thumbs up

Fri, 01/12/2018 - 03:24

Sorry for little information, Marcus. My project type is high rise residential building. I set occupancy schedule with EFLH 4800h/year. As you suggested, I switch into fan cycled control. The result shows the Fan - interior ventilation EFLH reduction by 25%, 6200h/year, which significantly differs from my schedule. i will find out more reasons to fix it. anyway, if you have any ideas, tell me, Marcus. Thanks!
Profile picture for user sheffer
Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Fri, 01/12/2018 - 14:34

Do some of the fans bring in outside air as well as space conditioning? I description of the HVAC system would help.

Add new comment

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