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Heat Recovery in Baseline Model

NC-2009 EAc1: Optimize Energy Performance
posted by V. Miller on Sep 23, 2010, 6:18 am

Does anyone know what the official line is on baseline heat recovery is for constant volume HVAC systems with more than 5000cfm?

ASHRAE 90.1 G3.1.2.10 Exhaust Air Energy Recovery states...

Last reply: Michael Tillou, Sep 27, 2010, 10:12 pm

Green roof insulation value

NC-2009 EAc1: Optimize Energy Performance
posted by Emmanuel Pauwels on Aug 26, 2010, 8:07 am

We are integrating an extensive green roof in the project (7 cm of substrate) with sedum vegetation. Is there a way we can take credit for the insulation value of the roof in the energy...

Last reply: Mara Baum, Sep 8, 2010, 12:17 pm

Tracking Energy Use

NC-2009 EAc1: Optimize Energy Performance
posted by Elizabeth McPherson on Sep 3, 2010, 1:51 pm

I just read (in a really scarey article by an attorney who'd describing the legal implications of buildings whose certifications are challenged and revoked) that we must now provide one-year...

Last reply: Tristan Roberts, Sep 3, 2010, 2:11 pm

5 building structures 5 models or 1 model as a whole?

NC-2009 EAc1: Optimize Energy Performance
posted by Vivian Wan on Sep 3, 2010, 6:19 am

If there are 5 building structures in the project, shall I perform separated energy simulation models for 5 individual structures, or 1 model as a whole?

Last reply: Marcus Sheffer, Sep 3, 2010, 8:47 am

Supply air temperature in Baseline

NC-2009 EAc1: Optimize Energy Performance
posted by Lisa Håkansson on Aug 27, 2010, 10:30 am

Hi!

The design flow in baseline is determined with a temperature difference of 11 C (G 3.1.2.8). This design flow and the fan power (G 3.1.2.9) will give you the specific fan power (kW/m3/...

Last reply: Christopher Schaffner, Sep 2, 2010, 4:06 pm

New District Energy Guidelines

NC-2009 EAc1: Optimize Energy Performance
posted by Shillpa Singh on Aug 17, 2010, 5:03 pm

All- check out the new guidelines published on Aug 13th by USGBC on energy credits- EAp2/EAc1- Energy Efficiency, EAp1/EAc3- Commissioning, EAc5- M&V; EAc2- On site...

Photovoltaics offset energy usage

NC-2009 EAc1: Optimize Energy Performance
posted by William Jencks on Aug 10, 2010, 7:06 pm

If 100% of your building energy usage is offset by a large photovoltaic array which is outside of your LEED project boundary, does this qualify for all 19 points under EAc1?

Last reply: Marcus Sheffer, Aug 10, 2010, 9:44 pm

Help on filling out LEED online template

NC-2009 EAc1: Optimize Energy Performance
posted by Mike Liu on Aug 4, 2010, 4:06 am

I am filling the LEED online template for EA p2, and I face a problem. Now I can get the building unmet load hours from eQUEST BEPS report, but I don't know how to split the heating unmet load...

Last reply: Christopher Schaffner, Aug 9, 2010, 8:28 pm

Thermal bridges in the model

NC-2009 EAc1: Optimize Energy Performance
posted by Lisa Håkansson on Aug 5, 2010, 3:02 am

I can’t find anywhere how detailed the thermal brides should be calculated in the model. In the simulation program I use you can use some default values or calculate the separately in every...

Last reply: Marcus Sheffer, Aug 9, 2010, 5:24 pm

Major renovation: HVAC system in baseline

NC-2009 EAc1: Optimize Energy Performance
posted by Lisa Håkansson on Aug 5, 2010, 2:55 am

Hi!
When you determine your building envelope for a baseline, a major renovation in an existing building, it's clear that "the baseline building design shall reflect existing conditions...

Last reply: Marcus Sheffer, Aug 9, 2010, 5:19 pm