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Forum discussion

NC-2009 EAp2:Minimum Energy Performance

EER Clarification for Typical Floors

SSN Energy Model

Mechanical Engineer

LEEDuser Basic Member

5 thumbs up

Project location :

United Arab Emirates

December 17, 2017

Hi,

I am doing Energy Model for Office building which is targeted for LEED Gold. The conditioned area is 1.2 lakhs & 5 Typical Floors (G+4). Hence, the baseline system would be System 6 and the following method used while optimizing energy performance of Baseline Energy Model.

We have selected single system called System01 for Ground Floor, System02 for typical floors (1st, 2nd & 3rd Floors) & System03 for 4th Floor. Is this correct or need to consider one system for the whole building.

Further, the cooling capacities & EER of these three systems as follows,

System01 (650 KBtu/h and 10.0 EER)

System02 (2040 KBtu/h and 9.7 EER)

System03 (780 KBtu/h and 9.7 EER)

Here, the cooling capacity of System02 is overall capacity. Whether I need to divide this value (2040 KBtu/h) by 3 to select the EER. Please advice

Note:

EER is noted as per ASHRAE Standard 90.1.2007 Table 6.8.1A

The difference between the EER is less. But, I would like to know the correct method.

Thanks.

Post a reply

Marcus Sheffer

LEED Fellow

7group / Energy Opportunities

LEEDuser Expert

4454 thumbs up

Mon, 12/18/2017 - 15:35

For a system #6 you are required to model a system per floor according to G3.1.1.

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