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Can two chillers share one cooling tower?

NC-2009 EAp2: Minimum Energy Performance
posted by Xing Shi on Sep 6, 2011, 8:27 pm

Per ASHRAE 90 G3.1.3.11: Each chiller shall be modeled with separate condenser water and chilled-water pumps interlocked to operate with the associated chiller.

We have two chillers sized...

Last reply: Marcus Sheffer, Sep 19, 2011, 1:28 pm

Energy coming from a off-site own renewable source

NC-2009 EAp2: Minimum Energy Performance
posted by Jose Salinas on Aug 12, 2011, 9:57 am

Our project involves a production plant for pasta and support facilities in Santiago, Chile. Process loads exceed regulated loads, in consequence it is anticipated that...

Last reply: Marcus Sheffer, Sep 19, 2011, 1:26 pm

weather data

NC-2009 EAp2: Minimum Energy Performance
posted by Tarek Dalati on Aug 3, 2011, 1:51 am

i m using HAP 4.41 for HVAC load calculation and energy modeling but unfortunatly the weather data available is hourly average s it ok to use for leed energy simulation or i ahve to go to another...

Last reply: Marcus Sheffer, Sep 19, 2011, 1:21 pm

Energy Model Baseline for a Dome

NC-2009 EAp2: Minimum Energy Performance
posted by Nelina Loiselle on Aug 2, 2011, 2:38 pm

We have a data center project where the owner decided to design-build a dome...

Last reply: Marcus Sheffer, Sep 19, 2011, 1:20 pm

Simple simulation question

NC-2009 EAp2: Minimum Energy Performance
posted by Timo Marquez on Jul 26, 2011, 8:05 pm

This might be a rather simple question, but would like avoid confusion. Apendix G indicates for vertical fenestration "40% of gross above-grade wall area, or smaller, shall be distributed...

Last reply: Marcus Sheffer, Sep 19, 2011, 12:35 pm

Industrial Process Energy

NC-2009 EAp2: Minimum Energy Performance
posted by LEED Pro Consultant on Jul 20, 2011, 7:47 pm

Hi, I am currently working in the certification of an industrial building. The industrial processes are consuming a high percentage of the building's energy consumption. Does the 10% minimum...

Last reply: Marcus Sheffer, Sep 19, 2011, 12:24 pm

SHGC of a double skin curtain wall

NC-2009 EAp2: Minimum Energy Performance
posted by Chaan Ah Bahk on Jul 19, 2011, 4:05 am

Hi All,
I'm working on a project building with double skin facade, and this double skin facade system is equipped with an automatic shading device in the cavity space between the glazings...

Last reply: Marcus Sheffer, Sep 19, 2011, 12:23 pm

Residential apartments Lighting Power Density

NC-2009 EAp2: Minimum Energy Performance
posted by Sustainability Provider on Jun 21, 2011, 5:17 am

Dear All,
I'm working on a residential apartments project and I'm trying to figure out what ASHRAE 90.1-2007 mandates as maximum lighting power...

Last reply: Marcus Sheffer, Sep 19, 2011, 12:16 pm

Exterior Lighting Power Allowances

NC-2009 EAp2: Minimum Energy Performance
posted by Omer Moltay on Jun 15, 2011, 9:41 am

We are struggling with some definitions from Table 9.4.5 of 90.1-2007. If our building has exterior landscaping, is that covered by any of the area types under Tradable Surfaces (for example...

Last reply: Marcus Sheffer, Sep 19, 2011, 12:12 pm

Manufacturing Plant Addition- Option 3

NC-2009 EAp2: Minimum Energy Performance
posted by Aaron Wascher on Jun 6, 2011, 4:44 pm

I am working on a manufacturing facility addition where the owner wants to pursue LEED certification. The LEED energy model turned out that we are not going to meet the 10% minimum. The owner...

Last reply: Marcus Sheffer, Sep 19, 2011, 12:10 pm