[BLDG-SIM] 90.1 Appendix G and Dedicated Outside Air Units
Dogan Yiginer
dyiginer at davislangdon.us
Tue Oct 2 09:37:50 PDT 2007
Jonathan,
You need to put the 100% OA in the baseline building if it is lab or a
hospital. App. G spells it out distinctly, just read the section about air
changes. The preheat coils must be the same in the proposed design and the
baseline building as in G3.1.2.3.
Dogan Yiginer
Davis Langdon
370 Lexington Avenue
25th Floor
New York, NY 10017
Tel: 212-697-1340
Fax: 212-697-1344
dyiginer at davislangdon.us
www.davislangdon.com <http://www.davislangdon.com/>
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From: BLDG-SIM at gard.com [mailto:BLDG-SIM at gard.com] On Behalf Of Jonathan
Curtin
Sent: Monday, October 01, 2007 2:28 PM
To: BLDG-SIM at gard.com
Subject: [BLDG-SIM] 90.1 Appendix G and Dedicated Outside Air Units
All,
I was looking for some help on interpreting how a baseline 90.1 Appendix G
building should be modeled if the proposed building uses a dedicated outside
air unit.
My interpretation is that the baseline building should be modeled without
the 100% outside air unit (and per Table G3.1.1B), but in this case could
you add preheat coils to the baseline simulation main air handling units, if
not in the proposed?
G3.1.2.3 Preheat Coils. If the HVAC system in the proposed
design has a preheat coil and a preheat coil can be modeled
in the baseline system, the baseline system shall be
modeled with a preheat coil controlled in the same manner as
the proposed design.
Thanks,
Jonathan Curtin
W Y L I E
C O N S U L T I N G
E N G I N E E R S
6161 Savoy, Suite 700 Houston, Texas 77036
713.781.2526 713.781.2536 fax
www.wylieassociates.com <http://www.wylieassociates.com/>
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