[Bldg-sim] LEED and Title-24 and E-Quest and ASHRAE-90.1
RobertWichert
robert at wichert.org
Fri Mar 14 07:18:26 PDT 2008
I am in need of some help and guidance on using E-Quest to qualify for
LEED credits. I am working on a California project with water source
heat pumps, that was initially analyzed using Energy Pro and showed
barely passing Title-24 requirements. The majority of high usage was
in the cooling tower fans, which appeared to be modeled as running
whenever a cooling load was present. We were then asked to try for
LEED certification and knowing that the Energy Pro run was barely
passing, we needed a better modeling tool and probably a more efficient
system. In order to model this better, we decided to use E-Quest so we
could put individual cooling tower cells into the model and also use
some add-ons provided by Climate Master for their higher efficiency
units . The first run of E-Quest failed to pass the Title-24
requirements.
I admit to being inexperienced on E-Quest, but I did read everything I
could find and followed every guidance I could find, but I could fine
nothing about using E-Quest to compare with ASHRAE 90.1 (which I believe
is an option for LEED certification). I also believe that when the
Title-24 compliance run is done, some default values are used that may
make our project seem less efficient, so I am trying to work around that
as well.
I would appreciate hearing any ideas that anyone has, but I would most
appreciate finding some written guidance regarding using E-Quest to
qualify for LEED certification. Alternatively, any written guidance
that is available regarding using E-Quest for comparison with ASHRAE
90.1 (which I do believe would allow for LEED certification) would be
helpful. I have found nothing on these topics in any of the published
E-Quest documentation that I have found. One guide says that comparison
with 90.1 is "planned for the future" but that is about it. That guide
was published in 2003, so I hope that we are in the future, but I do not
know for sure.
Lastly, if anyone has any written or anecdotal guidance regarding using
E-Quest to show compliance with Title-24, I'd really like to see that
too. Is there something that prevents E-Quest from using the actual
model set (not the defaults) that can be defeated to show compliance?
Again, I am not asking for somebody to show me how to do it, just for
somebody to show me an FAQ or a publication of some sort that I can use
in this situation.
Lastly, if I fail to figure this out, if there is someone who would be
willing to work as a consultant on the project, please contact me
off-list at 916 966 9060 or via robert at wichert.org . E-Mail is probably
best.
Thanks for your time in reading this and for any advice that you might
provide.
Sincerely,
Robert Wichert, P. Eng
916 966 9060
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