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?

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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?

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Forum discussion

CS-2009 EAp2:Minimum Energy Performance

Energy modeling ACP

Hi, 

We have a CS project- Office building of 16 levels. To achieve  minimum energy performance and optimize energy performance we are applying the ACP. The HVAC cooling system consist in Cooling towers with a condensed pumping system, the condensed water is provided to each level via tapped pipes. The tenant will have the choice to install VRF or minichillers per level. The Owner will be responsible of the energy cost that represent the cooling towers and the condensed pumps and the tenant will be responsible of the system energy cost of the system they choose to install. 

We received a comment from the preliminary review  saying that all HVAC related energy must be considered developer-influenced if ACP is applied. We want to know if this applies if the HVAC plant will be operating as described above, and also in the tenant lease agreement it is indicated that the Owner will be responsible of paying only the energy cost related to the operation of CT and condenser pumps. 

Thanks in advance

 

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Thu, 07/12/2018 - 15:57

Yes it includes all HVAC system energy use/cost. Typically the only energy use/cost in such a project that is outside the control of the owner is tenant lighting and plug loads.

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