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Forum discussion

CS-2009 EAp2:Minimum Energy Performance

acceptability criteria of approximate HVAC models

Rosana Correa

Director

Casa do Futuro

LEEDuser Basic Member

19 thumbs up

April 10, 2012

Dear All, I am modeling an existing building with a Water-cooled VRF HVAC system. It's not yet possible to entirely simulate this system, I will have to model it as a Water-cooled Heatpump or an Air-cooled VRF, adding pump and condensing tower powers for this last one. As they are both ‘adaptations’ of the real system, I am not sure about the LEED acceptability for both cases. Which system should I choose? How can I make this decision (what is the acceptability criteria of approximate HVAC models) ? Thank you a lot, Rosana

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Marcus Sheffer

LEED Fellow

7group / Energy Opportunities

LEEDuser Expert

4454 thumbs up

Wed, 04/11/2012 - 13:56

We would typically seek a published work around, preferably peer reviewed, and follow that procedure. If you can't find one then I would go back the the software developer and ask them how best to model the system in that software. The answer to your question could vary depending on the software you are using. You will need to justify a work around for your LEED submission. Software specif modeling questions are best asked on the software specific discussion forums on onebuilding.org.

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