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NC-2009 EAp2:Minimum Energy Performance

LEED 2009 NC - Warehousemodelling HVAC syetm in IES

Hi All, I do need help in the energy modelling for a warehouse project. Thanks in advance! This project consists of 200,000sf of warehouse with 5,000sf office space. The warehouse is heating only; the office uses heat pump for both heating and cooling. Now the questions came: 1. Do I need to model a cooling system in the proposed model? 2. Which baseline system shall I use? From Appendix G, system 7 should be selected. But I doubt if it is applicable for heating only space. 2007 Addendum added system 9 and 10, but addendum is not applicable for 2009 certification. So I am quite confused..... 3. Shall I apply two baseline HVAC systems? or just use one dominant system? Many thanks!

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Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Fri, 06/17/2016 - 12:59

1. No. Follow Addendum dn and model a system 9 or 10 from 90.1-2010 for the heating only spaces. 2. The remaining area is only 5000 sf so it would be a system #3 or #4. 3. In this case two systems.

Tue, 06/21/2016 - 13:49

Thanks Marcus!! Just another question. There is a heat recovery unit in AHU to supply fresh air to the office. But no cooling and heating coil have been designed in AHU. Fresh Air is heated in the local heater. I wonder if I should add the heat recovery unit in the baseline model, which is system 4. Where can I read the relevant requirements? Many thanks!
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Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Tue, 06/21/2016 - 14:08

See section G3.1.2.10. If the baseline systems meet the criteria then you need to model it. If not you don't.

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