[Equest-users] Where to find summary of overridden defaults etc.
Jeremy Poling
Jeremy.Poling at transwestern.net
Thu Apr 21 07:23:58 PDT 2011
Mark,
For terminology, in eQuest, "hours outside of throttling range" = "unmet
load hours".
Jeremy R. Poling, PE, LEED AP+BDC
From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Mark
Darrall
Sent: Thursday, April 21, 2011 5:58 AM
To: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Where to find summary of overridden defaults
etc.
Thanks for the feedback, everyone.
Overridden defaults always appear as red inputs, so identifying them
isn't the issue - it's the time involved in going through the entire set
of input boxes to find them all!
What I did for App. G baseline sizing was left the heating and cooling
capacities blank and ran the sim. I then viewed the calculated
capacities in the system summaries, adjusted them per the App. G
oversizing factors, and plugged those numbers back into the coil size
input box. For some reason, the coil sizing factor input box wasn't
available, or I would have just put the factors in there.
Thankfully I have no unmet hours, though I do have some hours out of
throttling range. I may try to track that down, though there seems to be
no LEED or App. G requirements for that.
What I'm trying to do here is get by the reviewers, so as much as I can,
I'll give them what they've asked for. These models are already
significantly different from what they originally reviewed (the
originals did not include a very large hood and makeup air unit that
alone uses more energy than the other 7 AHUs combined).
Thanks again,
MARK DARRALL, AIA, LEED AP BD+C, NCARB
Senior Project Manager
DESIGN ENRICHING LIFE // LIFE ENRICHING DESIGN
A2SO4 Architecture, LLC
Union Station
300 South Meridian Street / 250
Indianapolis, Indiana 46225
TEL 317 388 8850
FAX 317 280 0692
MOB 765 749 0841
www.a2so4.com
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From: Carol Gardner [mailto:cmg750 at gmail.com]
Sent: Wednesday, April 20, 2011 4:45 PM
To: Nick Caton
Cc: Mark Darrall; equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Where to find summary of overridden defaults
etc.
You're probably getting at the nature of the reviewer's comment better
than I did, Nick. I read "over-sizing" rather that "auto-sizing" because
I had just read that section in the User's Manual.
So basically we are doing auto-sizing but we call it "sizing runs" which
we use to input the pertinent data into the baseline, e.g. kW/cfm,
cooling coil size, heating coil size and/or cfm, or some combination of
output from our sizing runs.
On Wed, Apr 20, 2011 at 1:32 PM, Nick Caton <ncaton at smithboucher.com>
wrote:
In brief, I do what Carol's describing. I haven't read up on what the
user's manual might say about "manual oversizing," but all my baseline
system capacities are auto-sized using the same heating/cooling capacity
factors described... I've yet to encounter any opposition from my
reviewers using this approach.
For clarification and in contrast: baseline system efficiencies and fan
energies are not auto-sized, but rather separately calculated and
entered by hand, working from the auto-sized heating/cooling/airflow
capacities derived from a sizing run.
If after a sizing run, incrementally adjusting heating/cooling
capacities were necessary to correct unmet hours (though I haven't run
into that case for a long while - when it comes up it's usually resolved
checking/fixing other items), I suppose I would intuitively adjust the
1.15/1.25 factors a bit at a time until the numbers worked out, then
proceed with the efficiency & fan calcs.
As to a "manual" capacity oversizing approach: It's news to me...
~Nick
cid:489575314 at 22072009-0ABB<https://mail.google.com/mail/?ui=2&ik=367e06
555b&view=att&th=12f749d00f898106&attid=0.1&disp=emb&zw>
NICK CATON, E.I.T.
PROJECT ENGINEER
Smith & Boucher Engineers
25501 west valley parkway
olathe ks 66061
direct 913 344.0036 <tel:913%20344.0036>
fax 913 345.0617 <tel:913%20345.0617>
www.smithboucher.com <http://www.smithboucher.com>
From: equest-users-bounces at lists.onebuilding.org [mailto:
equest-users-bounces at lists.onebuilding.org] On Behalf Of Carol Gardner
Sent: Wednesday, April 20, 2011 3:00 PM
To: Mark Darrall
Cc: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Where to find summary of overridden defaults
etc.
Just a couple of comments, Mark. If a default was overridden, it would
be you who did it so you would know what you overrode it with. If I am
misunderstanding and you just couldn't see what the default was you can
view it, usually by right clicking on the input box.
I am curious why the reviewer asked that autosizing not be done for the
baseline. I was reading my Std 90 2004 User's guide this morning and was
kind of surprised that in it they more or less suggest you need to
oversize by hand. I'm not sure why. I know that you need to be careful
where you put the 15% and 25% sizing increases in eQUEST but it's
relatively easy to get them in the right spot.
As a check let me know what you think of my methodology. I set the
system sizing ratio on the first screen of the Air-Side HVAC System to
1.0, and then set the Cool Size Ratio to 1.15 on the first screen under
the Cooling tab, and the Heat Size Ratio to 1.25 of the first screen
under the Heating tab. Is this what others do?
Carol
On Wed, Apr 20, 2011 at 11:15 AM, Mark Darrall <MDarrall at a2so4.com>
wrote:
Thanks, everyone!
Don't forget, too, that the Appendix G requirements don't always jive
with default eQ values. Also, my reviewer has asked that autosizing not
be done for baseline, which probably meant more overrides...
I appreciate the tip on searching the .inp file. Thanks!
MARK DARRALL, AIA, LEED AP BD+C, NCARB
Senior Project Manager
Error! Filename not specified.
DESIGN ENRICHING LIFE // LIFE ENRICHING DESIGN
A2SO4 Architecture, LLC
Union Station
300 South Meridian Street / 250
Indianapolis, Indiana 46225
TEL 317 388 8850 <tel:317%20388%208850>
FAX 317 280 0692 <tel:317%20280%200692>
MOB 765 749 0841 <tel:765%20749%200841>
www.a2so4.com
Please consider the environment before printing this e-mail.
CONFIDENTIALITY NOTICE: This email and any files transmitted with it are
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may not review, copy or distribute this message. If you have received
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original message. Neither the sender nor the company for which he or she
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From: R B [mailto:slv3sat at gmail.com]
Sent: Wednesday, April 20, 2011 1:12 PM
To: Nick Caton
Cc: Mark Darrall; equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Where to find summary of overridden defaults
etc.
If in the baseline (and may be the proposed case), I have made changes
from the auto-sizing (and from the proposed design) to reduce the unmet
hours, I count that as default over-ridden. This is usually a small
number (less than 5 if I remember correctly).
On Wed, Apr 20, 2011 at 11:36 AM, Nick Caton <ncaton at smithboucher.com>
wrote:
Hi Mark,
For eQuest, I don't believe there is any reasonable way to tally
"default overrides." For LEED submittals, I typically enter zeroes at
the corresponding template queries, and that's what I've suggested to
others for initial submittals. I've heard others enter "9999" in all
fields without comment, but 0 seems less conspicuous to me =).
There's further discussion on this topic in the archives -
bookmark/favorite these links if you haven't already:
http://lists.onebuilding.org/pipermail/bldg-sim-onebuilding.org/
http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/
If a reviewer were to push me to come up with a figure without any
specific guidance after an initial submittal, I suppose I would paste
the .inp file into a word document, ctrl+f for instances of the text
".." without quotes, and explain that number represents an estimate of
the number of non-library entries in the project (screengrab):
Error! Filename not specified.
I would probably wonder about the reviewer somewhere along the way
too... Anyone familiar with eQuest and LEED knows there's no way to
finish a 90.1-based model without a horde of non-default entries... I'm
having difficulty guessing at how this figure could help an eQuest model
reviewer do their job properly. Perhaps it's specific to other software
packages... Thoughts anyone?
To be clear, I'd sooner advise just entering 0's in lieu of jumping
through any unnecessary hoops.
~Nick
Error! Filename not specified.
NICK CATON, E.I.T.
PROJECT ENGINEER
Smith & Boucher Engineers
25501 west valley parkway
olathe ks 66061
direct 913 344.0036 <tel:913%20344.0036>
fax 913 345.0617 <tel:913%20345.0617>
www.smithboucher.com <http://www.smithboucher.com>
From: equest-users-bounces at lists.onebuilding.org [mailto:
equest-users-bounces at lists.onebuilding.org] On Behalf Of Mark Darrall
Sent: Wednesday, April 20, 2011 10:11 AM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Where to find summary of overridden defaults
etc.
Hi,
I know that when a run has issues, it creates an ATTN report with the
warnings listed. But how can I find out how many default values have
been overridden without going through every screen and counting them?
Thanks, all!
MARK DARRALL, AIA, LEED AP BD+C, NCARB
Senior Project Manager
Error! Filename not specified.
DESIGN ENRICHING LIFE // LIFE ENRICHING DESIGN
A2SO4 Architecture, LLC
Union Station
300 South Meridian Street / 250
Indianapolis, Indiana 46225
TEL 317 388 8850 <tel:317%20388%208850>
FAX 317 280 0692 <tel:317%20280%200692>
MOB 765 749 0841 <tel:765%20749%200841>
www.a2so4.com
Please consider the environment before printing this e-mail.
CONFIDENTIALITY NOTICE: This email and any files transmitted with it are
confidential and intended solely for the use of the individual or entity
to which they are addressed. If you are not the intended recipient, you
may not review, copy or distribute this message. If you have received
this email in error, please notify the sender immediately and delete the
original message. Neither the sender nor the company for which he or she
works accepts any liability for any damage caused by any virus
transmitted by this email.
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Carol Gardner PE
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Carol Gardner PE
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