Forum discussion
NC-2009 EAp2: Minimum Energy Performance
Do the refrigeration system such as walk-in coolers or refrigeration cases must be detailed modeled in the simulation program (E+)? or is it possible consider them as a process loads?
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A portion of our building envelope is historic. Can we exclude it from our model?
For an existing building, do I need to rotate the model?
Our process load is higher than 25%. Do we have to justify that?
Our local code references ASHRAE 90.1-2010. Should I use that for my documentation, or 90.1-2007?
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?
Which baseline HVAC system do I use if my building has no heating or air conditioning?
Our project has a diesel backup generator. Should we include it in our energy model?
Can SHGC be higher in the proposed than in the baseline model?
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5915 thumbs up
June 28, 2013 - 10:20 am
They are a process load. How you calculate or model the energy use is up to you. You should do so as accurately as you can within reason. If they are a significant part of the overall energy use more time should be taken to ensure accuracy. The greater the impact on overall usage the more time should be spent.
Matteo Rigo
savJuly 24, 2013 - 4:02 am
About the process load in Retail, the table 1 of EAc.1 have to be used for both baseline and proposed?
In case we have a detailed datasheets of process equipments, may we use these values both for baseline and proposed in place of table 1?
Thank you
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5915 thumbs up
July 24, 2013 - 9:31 am
The table which lists the values for a variety of retail equipment should be used for the Baseline. You should model the Proposed with the actual equipment being installed. Hopefully your Proposed systems use less energy than the Baseline!
Matteo Rigo
savJuly 26, 2013 - 10:21 am
But, if in the table 1 the characteristics of the machines are very different (or even missing) respect those that we have in the Retail (the location is in Italy and there are specific mechanical process of food preparation), how do we have to do?
Do we have to use the same values of the Proposed also in the Baseline?
Thank you very much
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5915 thumbs up
July 26, 2013 - 10:39 am
The purpose of table 1 was to establish baselines that projects could claim savings against. If you are not claiming any savings simply model the proposed equipment identical in the baseline.