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Complicated CHW distribution & pump energy

NC-2009 EAp2: Minimum Energy Performance
posted by Charline SEYTIER on Oct 3, 2013, 12:55 pm

We are facing a complicated CHW distribution in one of our energy model, we have 2 chillers feeding a constant flow primary loop that serve heat exchangers.

From the heat exchangers start...

Last reply: Charline SEYTIER, Oct 15, 2013, 11:07 am

PI form 2 vs Energy Simulation Floor Area

NC-2009 EAp2: Minimum Energy Performance
posted by Leandro Silva on Oct 9, 2013, 7:09 am

We have a conflict between the LEED floor area which clearly excludes underground parking (in our case) and the area of the energy simulation. I have tried to find clarification on the area of...

Last reply: Leandro Silva, Oct 9, 2013, 5:59 pm

DHW Model Inputs

NC-2009 EAp2: Minimum Energy Performance
posted by Wes Lawson on Oct 3, 2013, 8:12 pm

All,

We are attempting to accurately model the gas energy usage for the...

Last reply: Marcus Sheffer, Oct 9, 2013, 4:50 pm

Hotel System 2 Reheat

NC-2009 EAp2: Minimum Energy Performance
posted by Michael Angell on Oct 8, 2013, 9:29 am

I am currently modeling a hotel with less than 20,000sqft (specifically 19720) of non-residential space. When modeling I understand I must use system 2 (as it has electric heating) for the...

Last reply: Marcus Sheffer, Oct 9, 2013, 4:43 pm

Revised Section 1.4 Form Units

NC-2009 EAp2: Minimum Energy Performance
posted by Aaron Luthien on Oct 9, 2013, 8:33 am

Hello,

The new revised section 1.4 form asks the values in US units. Can we fill the form in SI units? We did the modeling in SI units and we believe that we should fill the form in SI....

Last reply: Marcus Sheffer, Oct 9, 2013, 4:04 pm

Exterior building lighting power- exceptions

NC-2009 EAp2: Minimum Energy Performance
posted by Rosana Correa on Oct 1, 2013, 3:14 pm

Hi,
I am simulating a petrol station where the advertising has built-in lighting that works at night. We assumed that this is 9.4.5 exception B. The power...

Last reply: Marcus Sheffer, Oct 7, 2013, 9:43 am

Unconditioned building envelope

NC-2009 EAp2: Minimum Energy Performance
posted by Luana Bertoletti on Oct 1, 2013, 5:12 pm

3, 2013- 9:04 am Hi Marcus, I read many discussions in this forum stating that "You do not have to model heating or cooling in unconditioned spaces", which would be my case. So, why should...

Last reply: Marcus Sheffer, Oct 7, 2013, 9:41 am

Delineation of systems AND heat sources

NC-2009 EAp2: Minimum Energy Performance
posted by Wes Lawson on Oct 3, 2013, 8:55 am

Table G3.1.1A states that buildings that are “…eligible for more than one baseline system type should use the predominant condition to determine the system type for the entire building except as...

Last reply: Marcus Sheffer, Oct 7, 2013, 9:33 am

Energy modeling of a passive building- baseline case vs propose

NC-2009 EAp2: Minimum Energy Performance
posted by CONSTANZA CATTAN on Oct 2, 2013, 11:10 am

Dear all,
I'm working on a passive building in which it was decided, as energy efficiency technique, to be buried. I wonder if the baseline case must be modeled on ground floor as the...

Last reply: Marcus Sheffer, Oct 7, 2013, 9:31 am

Computer room units

NC-2009 EAp2: Minimum Energy Performance
posted by HOUCINE TLEMSANI on Oct 1, 2013, 9:38 am

I am working on a project under LEED NC 2009 where the com Rooms and server rooms are served by computer room units (CRAC) with dehumidification and reheat. i have done some research and it is...

Last reply: Marcus Sheffer, Oct 2, 2013, 3:20 pm