[Bldg-sim] Selecting a baseline HVAC system for storage / warehouse?

[James Hansen]

I'm modeling a 5-story, 99,000 square foot self-storage facility for the
purpose of the energy efficiency tax credit for commercial buildings.

 

Based on the ASHRAE 90.1 User's Manual, I believe this facility would
fall under System 5 (Packaged VAV with reheat boxes fed from a hot water
loop).  However, the spaces themselves are kept at non-standard
conditions.  55 degrees during heating season, 80 degrees during cooling
season.  The owners have discovered that 5-ton residential split systems
(with condensing furnaces) are great at being a budget HVAC system that
maintains the space temps.

 

Is a system with five (5) DX RTUs feeding shutoff VAV boxes with hot
water reheat fed from a central boiler system really the Baseline
building?  Seems like overkill, and it seems like there is no way that
it would be more efficient than a couple split systems per floor.

 

The storage units are all open to each other, so based on App G, it
looks like I just have to model a zone for each exposure and an interior
zone.

 

Any thoughts?  Is this the proper Baseline system?

 

Thanks!

 

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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