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

CS-2009 EAp2:Minimum Energy Performance

Brazilian Equivalent Standard

Hello, I'm modelling for LEED C&S 2009. The project has 26 floor type of mixed-use offices. My question is about the Minimum Energy Perfomance credit (EAp2) and equivalent standards for Brazil. In USGBC website, I read the following about this credit: "Projects in Brazil that are certified at the “A” level under the Regulation for Energy Efficiency Labeling (PBE Edifica) program for all attributes (Envelope, Lighting, HVAC) achieve this prerequisite." also in USGBC website, there is the following about Optimize Energy Perfomance credit (EAc1) : "Projects outside the U.S. may use a USGBC approved equivalent standard" I would like to know if "A" level under PBE Edifica can be used as equivalent standard in EAc1 and substitute the ANSI / ASHRAE / IESNA Standard 90.1-2007. If so, the 2 water-cooled centrifugal chillers specified in the ANSI / ASHRAE / IESNA Standard 90.1-2007 for projects >= 600 tons (Table G3.1.3.7), with 6.1 COP and 6.4 IPLV (Table 6.8.1.C), can be replaced with VRF systems described at Tables 5.4 of PBE Edifica Manual for RTQ-C or split systems that ensure "A" level under PBE Edifica? The values described at Tables 5.4 and the value that guarantee "A" level with split systems are the following: VRF without reverse cicle (project >= 70 kW): COP = 2,93 VRF with reverse cicle (project >= 70 kW): COP = 2,78 Split system: COP > 3,23 The COP value specified for centrigual chillers at Table 6.8.1C is high compared to COP values of VRF or split systems. Hence, energy simulation results are much smaller. Most commercial buildings in Brazil do not use centrifugal chillers for air conditioning systems, because this technology usually is much more expensive than others; instead, they usually use VRF or split systems. Therefore, using centrifugal chiller as air conditioning system baseline do not reflect the real situation on Brazil. Regarding the energy certifications over the world, in Brazil we use the PROCEL certification, where HVAC systems are treated specifically and follow Brazilian technical standards, the NBRs. In this way, the NBRs take into account climate regionalization, available environmental and technological conditions, being more applicable to our situation. Therefore, we find more appropriate comparisons with NBRs and we would like to ask if these standard can be applied in our case.

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