See all forum discussions about CS-2009 EAp2
 Subscribe to new posts about CS-2009 EAp2 Post a new question aboutCS-2009 EAp2
See LEEDuser’s guidance on CS-2009 EAp2»
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

Natural Ventilation

Hi! Currently, I'm working on a warehouse's project under LEED certification. There's no heating/cooling system in the warehouses, there's only natural ventilation. In the building simulation, I dind't include any cooling/heating system and then I made some comfort evaluation and there are many discomfort hours. Should I include any cooling/heating system for the discomfort hours, or the concept of unmet load hours are only applicable when we talk about conditioned areas? Should the energy cost only consider the other uses? 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

Tue, 08/14/2012 - 12:40

You do not have to include a heating/cooling system in an unconditioned space. The unmet load hours do not apply to unconditioned spaces. This would be the same as an unconditioned parking garage. Assuming the warehouse is part of the LEED submission, the energy cost must include all energy use within and associated with this space including lighting, plug load, process loads, ventilation, etc. While this only applies to heating only systems you might want to check out Systems #9 and #10 from Table G3.1.1A in 90.1-2010.

Tue, 08/14/2012 - 13:02

Hi Sheffer! Thanks a lot!

Add new comment

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