Hello,
I?m currently working on a model for a LEED project. The parking garage is
heated only with unit heaters and no cooling. The garage is also
ventilated naturally with aluminum grilles. What is the correct way to
model this for a LEED project? Also, how do I take the grilles into
account? I currently have them in as windows, but I am not sure what do
since they are essentially openings in the envelope.
Thank you
*Mike Campbell, EIT, LEED AP O+M
Hello, I just wanted to follow up on this and see if anyone has any
information on how to model the garage grilles?
Also one other question ? if a space has an AC unit plus and unit heater,
how should that be modeled?
Thank you
*Mike Campbell, EIT, LEED AP O+M
*From:* Michael Campbell [mailto:mike at sustainablesolutionscorporation.com]
*Sent:* Thursday, August 09, 2012 8:47 AM
*To:* equest-users at lists.onebuilding.org
*Subject:* LEED modeling garage
Hello,
I?m currently working on a model for a LEED project. The parking garage is
heated only with unit heaters and no cooling. The garage is also
ventilated naturally with aluminum grilles. What is the correct way to
model this for a LEED project? Also, how do I take the grilles into
account? I currently have them in as windows, but I am not sure what do
since they are essentially openings in the envelope.
Thank you
*Mike Campbell, EIT, LEED AP O+M
if the garage is completely open and unconditioned, then don't model the
garage space at all. Simply model the lighting, and any energy used by an
exhaust fan for CO and NOx control.
--
Karen
I think Karen's second sentence reads better if you tag "... as a direct load to the meter" to the end =).
To the second query, which dances with the "one system per space" rule of DOE2: Something I've done in the past is split a space into two spaces thermally connected with an air wall (copy the space, halve the area/volume/internals, adjust & re-assign the interior partitions for the air wall), then assign the unit heater to one and the cooling system to the other. Carefully review the temperature inputs to ensure the systems aren't fighting each other.
An easier approximation could be to simply include baseboard heating under the system in question.
~Nick
[cid:489575314 at 22072009-0ABB]
NICK CATON, P.E.
Thanks for the reply, Karen. The garage is on the ground floor with other
spaces which will have to be modeled. It is also a semi-heated space.
*Mike Campbell, EIT, LEED AP O+M
*From:* Karen Walkerman [mailto:kwalkerman at gmail.com]
*Sent:* Thursday, August 16, 2012 8:34 PM
*To:* Michael Campbell
*Cc:* equest-users at lists.onebuilding.org
*Subject:* Re: [Equest-users] LEED modeling garage
if the garage is completely open and unconditioned, then don't model the
garage space at all. Simply model the lighting, and any energy used by an
exhaust fan for CO and NOx control.
--
Karen
Thanks for the help, Nick. One question regarding the garage ? the space
is semi-heated with unit heaters and the floor that the garage is on also
includes spaces that are conditioned. Should I just increase the
infiltration in the garage to account for the wall vents?
Thanks
*Mike Campbell, EIT, LEED AP O+M
*From:* Nick Caton [mailto:ncaton at smithboucher.com]
*Sent:* Friday, August 17, 2012 10:45 AM
*To:* Karen Walkerman; Michael Campbell
*Cc:* equest-users at lists.onebuilding.org
*Subject:* RE: [Equest-users] LEED modeling garage
I think Karen?s second sentence reads better if you tag ?? as a direct load
to the meter? to the end =).
To the second query, which dances with the ?one system per space? rule of
DOE2: Something I?ve done in the past is split a space into two spaces
thermally connected with an air wall (copy the space, halve the
area/volume/internals, adjust & re-assign the interior partitions for the
air wall), then assign the unit heater to one and the cooling system to the
other. Carefully review the temperature inputs to ensure the systems
aren?t fighting each other.
An easier *approximation* could be to simply include baseboard heating
under the system in question.
~Nick
[image: cid:489575314 at 22072009-0ABB]**
* *
*NICK CATON, P.E.*
*From:* equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] *On Behalf Of *Karen
Walkerman
*Sent:* Thursday, August 16, 2012 7:35 PM
*To:* Michael Campbell
*Cc:* equest-users at lists.onebuilding.org
*Subject:* Re: [Equest-users] LEED modeling garage
if the garage is completely open and unconditioned, then don't model the
garage space at all. Simply model the lighting, and any energy used by an
exhaust fan for CO and NOx control.
--
Karen