[Bldg-sim] Existing building HVAC modeling

[James Hansen]

I'm modeling a building for LEED EAc1 compliance, and was wondering how
you are supposed to model existing building HVAC systems if you are
adding square footage to the building.

 

Let's assume you have a 4-story building with a 2-chiller HVAC plant and
dual temp boxes.  If you were to add a 5th floor to the building, what
would your baseline model look like?  I know that the 1st four floors
would use the existing HVAC system, but would your new 5th floor be
treated as a new 15,000 square foot area with packaged RTUs, or would
you add a new chiller to the existing HVAC chilled water plant, and have
that chiller meet all the requirements of App G, and have shutoff VAV
boxes for the 5th floor in lieu of dual temp boxes? 

 

For reference, under our proposed design, we are doing just that:
adding a frictionless chiller to the plant to make up the extra load.

 

GHT Limited
James Hansen, PE, LEED AP

Senior Associate

1010 N. Glebe Rd, Suite 200

Arlington, VA  22201-4749

703-338-5754 (Cell)

703-243-1200 (Office)

703-276-1376 (Fax)

www.ghtltd.com <http://www.ghtltd.com/> 


The information contained in this communication is confidential, may be privileged, and is intended only for the use of the addressee.  It is the property of GHT Limited.  Unauthorized use, disclosure or copying of this communication or any part thereof is strictly prohibited and may be unlawful.  If you have received this communication in error, please notify me immediately by return e-mail or by e-mail to ght at ghtltd.com, and destroy this communication and all copies thereof, including all attachments.  Thank you.



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