FAQs about EAp2 :

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?

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?

View answers »

Forum discussion

CS-2009 EAp2:Minimum Energy Performance

High Process Load and Equipment Efficiency

Our project is a manufacturing plant which is seeking certification under NC Core and Shell v2009. The building will have a high process load (could be 50%) but the equipment has not yet been selected. We’ve been told that this equipment will be significantly more efficient than other similar plants but we don’t have data on the new equipment or any existing facilities to validate the claim. The process is somewhat unique and there are very few existing facilities which are similar. I’m not sure how to approach the process loads in the energy model and meet the intent of the credit. If we use COMNET Appendix B process loads for a manufacturing (0.86 W/SF), our process loads will be low. If we calculate the process loads based on the electrical service, our process loads will be high (25 W/sf). The problem I am having is that I don’t know where in the middle it will fall or how to justify whatever point I choose. I don’t want it to appear that I am manipulating the process loads to get energy savings. Has anyone had a similar situation?

0

You rely on LEEDuser. Can we rely on you?

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

Go premium for $15.95  »

Wed, 03/16/2016 - 00:59

Ultimately you are required to model it as designed. For a process like you describe you cannot simply pick a number to include in the model. During the design process to get started you can use general values. For example you indicate that you know the process could be 50%. If that is based on other similar plants it would not be hard to simply enter some loads in the model so that the process is about 50%. For a specialized process you can't use a rule of thumb. You have to figure out a way to model it so that it is accurately represented in the model.

Add new comment

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