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?

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Forum discussion

CS-2009 EAp2:Minimum Energy Performance

District heating

I’m working on a Core & Shell project that has as Energy source a District Heating that use only heat recovery from combustion of municipal solid waste, I would like to know if the compliance path described below is correct: Design Building - Energy source: o District heating that use only heat recovery from combustion of municipal solid waste o Main task of the of combustion plant: waste disposal o Thermal energy supplier: Teris o Thermal energy specific cost by Teris: 0,0558 $/kWh (without capital recovery, maintenance and non energy costs) Baseline Building - Energy source: electricity (no backup source is present in the building) - HVAC system types are modified to be consistent with the purchased energy source (electricity) Compliance Path for EAp2 and EAc1 - Meet all mandatory measures for downstream equipment according ASHRAE 90.1-2007 - Energy model per ASHRAE 90.1 2007 Appendix G using the following specific Energy costs for: o Design Building: 0,0558 $/kWh (= thermal energy specific cost by Teris) o Baseline Building: median electricity cost of the electric power supplier Thanks!

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Thu, 08/30/2012 - 14:32

Look to the District Energy Systems document for guidance. Option 1 models both proposed and baseline as purchased energy (this is the same approach as outlined in Appendix G). Option 2 requires the modeling of a virtual central plant in the proposed and an on-site heating plant according to Appendix G. I don't see any possible scenario where the baseline uses electric heat as this scenario is purchased heat and that is listed in Table G3.1.1A in the fossil fuel column.

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