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Our project has a large process load—75%. Despite our efforts to make an efficient HVAC design, the cost savings are minimal. What can we do to earn this prerequisite and be eligible for LEED certification? Is there any flexibility in how we model the p

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Our process load is higher than 25%. Do we have to justify that?

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Our local code references ASHRAE 90.1-2010. Should I use that for my documentation, or 90.1-2007?

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The Section 9 space-by-space method does not include residential space types. What should I use?

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Is it acceptable to model a split-type AC with inverter technology compressor as a heat pump, like modeling VRF?

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A portion of our building envelope is historic. Can we exclude it from our model?

Which baseline HVAC system do I use if my building has no heating or air conditioning?

For an existing building, do I need to rotate the model?

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Forum discussion

NC-2009 EAp2:Minimum Energy Performance

Service hot-water system

Luana Bertoletti

Sustentech

LEEDuser Basic Member

24 thumbs up

October 3, 2012

Hi, I have a doubt related to the service hot water system for the baseline building. In appendix G, it's said that "the service hot-water system in the baseline building design shall use the same energy source as the corresponding system in the proposed design and shall conform with the following conditions..." In a specific project, I have 2 service hot-water systems: a gas instantaneous water heater and a solar + eletric auxiliar system. So, in this case, for the baseline building, should I model 2 baseline systems? Thanks.

Post a reply

Marcus Sheffer

LEED Fellow

7group / Energy Opportunities

LEEDuser Expert

4454 thumbs up

Thu, 10/04/2012 - 15:51

Yes you should.

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