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

Using Chilled Water Pump similar to ASHRAE 90.1

Hi, we have development where the Chiller Plant is serving three buildings. Due to of the distance of the building, the Chilled Water pump head is quite high and we required to install Chilled Water pump that bigger than what stipulated at ASHRAE 90.1. Can we use Chiller Water pump as stipulated from ASHRAE 90.1 for both proposed and baseline model? So we are not claiming any energy savings on this component.

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

Tue, 08/16/2016 - 16:28

In general no you cannot. The proposed is modeled as designed the baseline according to Appendix G. If the proposed case is worse the model needs to reflect that it is worse. You have to make up the loss in other energy end uses. That said you might want to look at the District Energy Systems for LEED v2 for guidance on modeling central plants serving multiple buildings and the campus guidance for modeling multiple buildings within a single LEED submission.

Wed, 08/24/2016 - 01:45

Hi Marcus, Its really helpful. Another thing that we would like to ask. Our development is cleanroom that having very high process load. Almost 90% of building cooling load is for process cooling. Is there any exceptional method or calculation for us to claim more savings? We have selected the most efficient equipments and would like to obtain the best energy savings possible for our development.
Profile picture for user sheffer
Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Wed, 08/24/2016 - 14:40

Equipment efficiency is a pretty easy one to claim savings. The baseline would be the minimum in 90.1 for the type of equipment used. There is also a spreadsheet that can be used for the data center equipment itself - http://www.usgbc.org/resources/minimum-energy-performance-data-center-calculator

Thu, 08/25/2016 - 00:49

Hi Marcus, apologize forget to mention. The development is cleanroom, hence more than 90% of the building cooling load is for process cooling on the fabrication machine. We noted 90.1 only for fans and pumps, then we can claim savings. Any suggestion? Because we are having big chunk of energy consumption components that is not clearly stipulated.
Profile picture for user sheffer
Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Thu, 08/25/2016 - 13:16

Same suggestion. You can claim savings for the process cooling based on the efficiency of the equipment as an exceptional calculation. You need to establish a reasonable baseline which in many cases can be based on 90.1 minimums. If 90.1 does not cover the equipment used then you will need to figure out how to establish the baseline through some other means.

Add new comment

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