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Difference in hours of operation

NC-v4 EAp2:Minimum energy performance
posted by  Charalampos Giannikopoulos  on 

When applying daylight sensors in a project the amount of EFLH between proposed and baseline model will differ since the power of lighting is reduced.

1
Tue Nov 14, 2017, 4:34 pm
2
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7group / Energy Opportunities
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Tue Nov 7, 2017, 8:10 pm

Minimum efficiencies for VRF with heat pump system

NC-v4 EAp2:Minimum energy performance
posted by  Instra Ingenieros  on 

Hi there, I have a question regarding VRF efficiencies. We have an office building that have VRF with heat pump systems that provide cooling and heating.

1
Thu Oct 26, 2017, 6:15 pm
3
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SmithGroupJJR
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Tue Oct 24, 2017, 2:49 pm

How to model glycol used for freeze protection in hydronic systems, i.e., not ice storage?

NC-v4 EAp2:Minimum energy performance
posted by  Jamy Bacchus  on 

If a proposed chiller (or boiler) meets the Tables 6.8.1A-J in 2007 or 2010, when tested with water at AHRI conditions but is designed to be used with glycol for freeze protection, then its actual

1
Wed Oct 25, 2017, 8:08 pm

Option 3 - Core Performance Guide???

NC-v4 EAp2:Minimum energy performance
posted by  Erica Downs  on 

The prescriptive path under Option 3 still references the "Advanced Buildings Core Performance Guide".  However, this guide has been "sunset" by NBI and no longer exists.  Typic

6
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Tue Oct 10, 2017, 7:45 pm

Cogeneration / Combined Heat and Power - Electricity Lead

NC-v4 EAp2:Minimum energy performance
posted by  Victoria Watson  on 

Hi all, does anyone have any reference to USGBC guidance or experience in modeling CHP when it is electricity lead not thermal lead? 

1
Mon Oct 16, 2017, 8:40 pm

opaque building envelope construction

NC-v4 EAp2:Minimum energy performance
posted by  Ahmed El-Semary  on 

i need to know what is required to be filled exactly in roof construction and whatis meant by building ID ??

6
Mon Sep 18, 2017, 1:25 pm

Energy Modeling Necessity

NC-v4 EAp2:Minimum energy performance
posted by  Nandana Kumar  on 

We have a project space where the built up area is 2 lakh sqft out of which the conditioned space is 1000 sqft. Is energy modeling necessary in this scenario?

1
Wed Sep 6, 2017, 4:23 pm