Forum discussion
NC-2009 EAp2: Minimum Energy Performance
I am working on LEED ratail project for EAp2 option 1. Do we need to alway fill out the process equipment data including cooking, hood, refrig in the "LEED Retail Table 1-4 Process Efficiency Measures" as required by the LEED NC retail template? In my case, I will not claim any saving from all process equipment (process energy of baseline and proposed will be identical). Such table is very hard to fill out and would be nice if not require to be submitted. Can anyone guide me?
Thanks
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Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5912 thumbs up
January 10, 2014 - 12:22 pm
Yes if you project contains any of the equipment listed in the question. It is not only for claiming savings but also serves as an input summary for the modeling of this equipment.
Jatuwat Varodompun
DrGreen Building Soultion
26 thumbs up
January 10, 2014 - 12:33 pm
Thanks
What happen if some of the equipement do not have the data to pass the "Prescriptive Criteria". Some equipments were made local and have no data such as efficiency.
What if I just list all the equipement and did not try to get any claimed saving. For example, in Table 1, select "No" in the "prescriprive criteria met" role and select "manual calcuation" for bote baseline and proposed of "energy calculation methodology". Will this OK with EAp2 requirement?
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5912 thumbs up
January 10, 2014 - 12:57 pm
I would think that as long as you model the equipment identically and provide a good summary of what you have modeled (with specifics) it should be acceptable.
Jatuwat Varodompun
DrGreen Building Soultion
26 thumbs up
January 10, 2014 - 1:03 pm
Thank so much.
Jek Villarba
January 16, 2014 - 10:30 am
EAp2-3 section 1.4 table provided by LEED, under the Air-Side HAV Details.
Cell C26 indicates "Sum of fan power for all supply, return, relief, and exhaust fans cannot exceed G3.1.2.9 system fan power allowance calculated using supply cfm". However, I don't see or think ASHRAE 90.1 is limiting the fan powered only to the supply fan cfm. Please let me know your thoughts on this.
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5912 thumbs up
January 20, 2014 - 1:38 pm
The statement is correct. The total baseline fan power is calculated using the supply cfm for the baseline system according the G3.1.2.9. There are other inputs, like the pressure drop adjustments, into the calculations but it always starts with the supply cfm. The total fan power is then distributed among the baseline system fans, typically in similar proportion to the proposed system if applicable.