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 :

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?

Our project has a diesel backup generator. Should we include it in our energy model?

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?

View answers »

Forum discussion

NC-2009 EAp2:Minimum Energy Performance

Service Hot Water - modeling the circulation pumps for this system

Vassil Vassilev

Manager

Termoservice

LEEDuser Basic Member

12 thumbs up

Project location :

April 1, 2018

Greetings,

Regarding modeling the Service Hot Water (SHW) for a project assigned to System 5, our approach was:

SHW load is the same as per Proposed and per Baseline.
The energy source – natural gas is the same as per Proposed and per Baseline.
The boiler for the Baseline is Natural Draft as per G3.1.3.2, while for the Proposed it is as per project design.

The question which kind of remain non clear is related to the circulation pumps and it is:

Should we model the SHW circulation pumps (as they are designed in the boiler plant) the same as per Proposed and per Baseline.

Thanks.

Post a reply

Marcus Sheffer

LEED Fellow

7group / Energy Opportunities

LEEDuser Expert

4454 thumbs up

Mon, 04/02/2018 - 00:37

Those pumps are not regulated by 90.1 so they are modeled in the baseline identical to the proposed design.

Add new comment

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