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NC-2009 EAp2:Minimum Energy Performance

Table 1.4

Profile picture for user msommerman_1
Khaled Fouda
Design Engineer, LEED AP (BD+C)
Energy Concepts
LEEDuser Basic Member
5 thumbs up

I have couple of questions about filling table 1.4.7: 1- Table 1.4.7A asks for the total cooling capacity, I use HAP 4.6 and the cooling capacities are calculated according to ASHRAE 90.1. Shall I run the simulation and then get the output results? 2- Table 1.4.7B, I am not sure of some system inputs yet in the proposed model, so I use ASHRAE 90.1 and let the software calculate. Shall I fill the table with the software results? Will it still be accepted although it is mentioned that all inputs should be consistent with the Proposed energy model andthe mechanical drawings and equipment schedules submitted to LEED ONLINE. Note: HAP output cooling capacities are away smaller than my actual equipments capacities used in the Proposed model. Will I receive a comment on this?

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Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
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Tue, 09/09/2014 - 18:04

1. Yes, the cooling capacity HAP calculated would be the input. 2.You should be virtually certain about the inputs for your proposed model before you do the final model for LEED. The software should not auto-size anything. Whether it will be questioned depends on the degree to which the input variable is off and which particular input is in question. If the system capacity is slightly off it should be fine. If the fan power is way off it will be questioned. Note. If they are way smaller then it will probably be questioned. Always model the Proposed as designed. Do not auto-size anything.

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