[Equest-users] Keyword Expression question
Jones, Christopher
Christopher.r.Jones at wsp.com
Fri Mar 16 13:46:36 PDT 2018
Hello Expressionistas,
Is there a simpler way to achieve #L("TYPE")==#SI("PSZ","SYSTEM","TYPE")
I was thinking there would be a way to return the TYPE number, ie. PSZ = 19, PVAVS = 21, etc.
Christopher R. Jones, P.Eng.
Technical Specialist
Sustainability & Energy
[cid:image001.png at 01D3BD46.56B88510]
T +1 416-644-0252
2300 Yonge Street, Suite 2300
Toronto, ON M4P 1E4 Canada
wsp.com
Please consider the environment before printing...
From: Nicholas Caton [mailto:Nicholas.Caton at schneider-electric.com]
Sent: Thursday, March 15, 2018 3:13 PM
To: Nicholas Caton <Nicholas.Caton at schneider-electric.com>; Daric Adair <Daric.Adair at hendersonengineers.com>; Jones, Christopher <Christopher.r.Jones at wsp.com>; John Aulbach <jra_sac at yahoo.com>
Cc: equest-users at onebuilding.org
Subject: RE: [Equest-users] eQuest Generated EFLH
Oh and hey, you can simplify the process I outlined by striking out Step #2 entirely… Custom reporting on the submeter isn’t necessary to generate the submeter PS-F report, but again may be necessary to cover FLEH for schedules and processes that aren’t related by a MULTIPLIER or FRACTION type schedule.
[cid:image002.png at 01D3BD46.56B88510]
Nick Caton, P.E., BEMP
Senior Energy Engineer
Regional Energy Engineering Manager
Energy and Sustainability Services
Schneider Electric
D 913.564.6361
M 785.410.3317
F 913.564.6380
E nicholas.caton at schneider-electric.com<mailto:nicholas.caton at schneider-electric.com>
15200 Santa Fe Trail Drive
Suite 204
Lenexa, KS 66219
United States
[cid:image003.png at 01D3BD46.56B88510]
From: Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Nicholas Caton via Equest-users
Sent: Thursday, March 15, 2018 2:01 PM
To: Daric Adair <Daric.Adair at hendersonengineers.com<mailto:Daric.Adair at hendersonengineers.com>>; Jones, Christopher <Christopher.r.Jones at wsp.com<mailto:Christopher.r.Jones at wsp.com>>; John Aulbach <jra_sac at yahoo.com<mailto:jra_sac at yahoo.com>>
Cc: equest-users at onebuilding.org<mailto:equest-users at onebuilding.org>
Subject: Re: [Equest-users] eQuest Generated EFLH
Inserting a general caution on leveraging peaks with the suggested consumption/peak PS-F approach…
You would need at least one hour in every fractional schedule at 1.0 to fully trust using the peak to derive FLEH from a meter report. That has been the root source of many LEED comments making incorrect conclusions based on FLEH “margin math.” You will also need to be mindful that each sub-meter is only covering the effects of a single schedule to ensure “coincident peaks” aren’t being conflated with actual peaks under a given end-use (like where you have 4 lighting schedules), similarly messing with your math later.
My concern with “tons of meters” vs. “tons of hourly reports” is that you’re kinda robbing Peter to pay Paul. It’s a lot of extra reporting and time spent parsing the outputs either way. My gut likes the *idea* of a custom hourly report approach more, as if you could construct a series of report blocks to replicate every schedule of interest, then you could do all the math in one output file, minimizing hours required for documentation and number-crunching. My concern however is I don’t think there’s a report block option that lets you simply select the hourly schedule value for just any schedule… You’ll need to do it indirectly…
So… here’s an idea that might combine the best potential of both approaches while minimizing error potential:
1. Save a separate copy/fork of your model – you’ll want to retain this work for later but you won’t want it in your final model… unless you do some extra legwork to “toggle/flag” these dummy loads into activity.
2. Set up a dummy elec meter under EM1 with up to 12 schedules for which you need to document FLEH. Give each schedule a 1kW Load, and a unique enduse.
[cid:image004.png at 01D3BD46.56B88510]
1. Copy the EM1 report block, and reassign it to your dummy meter. You might actually untick “total end-use energy” as the 13th entry as that’ll be meaningless later.
[cid:image005.png at 01D3BD46.56B88510]
1. Now, if you sum annual kWh for each end-use of the meter (handily done for you within the SIM PS-F reports), it’s equivalently the FLEH (if rounded to the nearest integer):
[cid:image006.png at 01D3BD46.56B88510]
[cid:image007.jpg at 01D3BD46.56B88510]
1. Set up additional sub-meters to cover schedules in multiples of 12 until you’ve covered every schedule for which you need to document FLEH.
This would only work for annual schedules of type FRACTION and MULTIPLIER. If they’re asking for something like system runtime hours or snap temp loop operations you’ll need to be running custom hourlies, but those could be set up alongside this custom reporting structure as needed.
For what it’s worth, I haven’t submitted a project for LEED v4 review yet, and neither have I seen or reviewed the context under which they are asking for FLEH documentation, but I’d be inclined with my first project to instead take a minimal documentation0 approach on this front and have the reviewer ask in commentary specifically for what they really need. Requiring FLEH for *everything* crosses the line of silly from a (this) reviewers’ perspective.
~Nick
[cid:image002.png at 01D3BD46.56B88510]
Nick Caton, P.E., BEMP
Senior Energy Engineer
Regional Energy Engineering Manager
Energy and Sustainability Services
Schneider Electric
D 913.564.6361
M 785.410.3317
F 913.564.6380
E nicholas.caton at schneider-electric.com<mailto:nicholas.caton at schneider-electric.com>
15200 Santa Fe Trail Drive
Suite 204
Lenexa, KS 66219
United States
[cid:image003.png at 01D3BD46.56B88510]
From: Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Daric Adair via Equest-users
Sent: Thursday, March 15, 2018 9:27 AM
To: Jones, Christopher <Christopher.r.Jones at wsp.com<mailto:Christopher.r.Jones at wsp.com>>; John Aulbach <jra_sac at yahoo.com<mailto:jra_sac at yahoo.com>>
Cc: equest-users at lists.onebuilding.org<mailto:equest-users at lists.onebuilding.org>
Subject: Re: [Equest-users] eQuest Generated EFLH
Oh, I agree, it’s screwy reporting requirements.
The hard thing is its by annual schedule. Not necessarily by fan system or all lighting.
I means around thing might – might be to set the meters based on annual schedule. Then use the PS-F reports to take the consumption/peak to get the EFLH. That avoids a tons of hourly reports but uses potentially a lot of meters. Though, was hoping to avoid this.
Thanks,
DARIC R ADAIR PE, CEM, BEMP
Mechanical Engineer, Energy Analyst
Henderson Engineers
Tel (913) 742-5530
daric.adair at hendersonengineers.com<mailto:daric.adair at hendersonengineers.com>
Licensed in KS
From: Jones, Christopher [mailto:Christopher.r.Jones at wsp.com]
Sent: Thursday, March 15, 2018 9:11 AM
To: Daric Adair <Daric.Adair at hendersonengineers.com<mailto:Daric.Adair at hendersonengineers.com>>; John Aulbach <jra_sac at yahoo.com<mailto:jra_sac at yahoo.com>>
Cc: equest-users at lists.onebuilding.org<mailto:equest-users at lists.onebuilding.org>
Subject: RE: [Equest-users] eQuest Generated EFLH
What is the EFLH for lighting controlled by photo sensors? Fans that have VSDs? Etc.? To get accurate EFLH you would need hourly reports.
LEED has some really goofy reporting requirements.
Christopher R. Jones, P.Eng.
Technical Specialist
Sustainability & Energy
[cid:image001.png at 01D3BD46.56B88510]
T +1 416-644-0252
2300 Yonge Street, Suite 2300
Toronto, ON M4P 1E4 Canada
wsp.com
Please consider the environment before printing...
From: Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Daric Adair via Equest-users
Sent: Thursday, March 15, 2018 9:45 AM
To: John Aulbach <jra_sac at yahoo.com<mailto:jra_sac at yahoo.com>>; equest-users at lists.onebuilding.org<mailto:equest-users at lists.onebuilding.org>
Subject: Re: [Equest-users] eQuest Generated EFLH
John & all;
That could work for the plant equipment, but LEEDv4 is requesting EFLH for all annual schedules. We have a project that has 4 different main occupancy times/groups. Which cascades out to occupancy, lighting, fans, etc. Many, many schedules.
I received a separate suggestion to check under File>Export, but none of the 3 options there had anything like the EFLH.
LEED has a ‘calculator’ in their documentation, but its built arround different days/week (which also don’t align in this project). Something could be built in excel to handle this – but I saw little need to recreate the wheel if eQuest/DOE2 does this automatically.
Thanks,
DARIC R ADAIR PE, CEM, BEMP
Mechanical Engineer, Energy Analyst
Henderson Engineers
Tel (913) 742-5530
daric.adair at hendersonengineers.com<mailto:daric.adair at hendersonengineers.com>
Licensed in KS
From: John Aulbach [mailto:jra_sac at yahoo.com]
Sent: Wednesday, March 14, 2018 7:52 PM
To: equest-users at lists.onebuilding.org<mailto:equest-users at lists.onebuilding.org>
Subject: Re: [Equest-users] eQuest Generated EFLH
My best guess (assuming you want cooling for example) is to make a single chiller for your building (gotta be PLANT equipment). Figure out the peak cooling load from SS-D and size the chiller accordingly. Run the building. Look in PS-C, with 10% increments of load.
Multiply each 10% load increment (say chiller is 1000 ton, so 100 tons for 10%, 200 tons for 20%, etc) by the number of hours shown for that increment. Take the total ton-hrs and divide by the 1000 ton (for this example).
That should give you equivalent load hours.
John Aulbach, PE
On Wednesday, March 14, 2018, 2:27:48 PM PDT, Daric Adair via Equest-users <equest-users at lists.onebuilding.org<mailto:equest-users at lists.onebuilding.org>> wrote:
Does anyone know if there is a report or means from eQuest to generate the EFLH (equivalent full load hours) for each schedule?
Colleague of mine believes VistualDOE was able to complete and hoping there is a comparable tool/report.
Thanks in advance.
Thanks,
DARIC R ADAIR PE, CEM, BEMP
Mechanical Engineer, Energy Analyst
Henderson Engineers
8345 Lenexa Drive, Suite 300 | Lenexa, KS 66214
Tel (913) 742-5530
daric.adair at hendersonengineers.com<mailto:daric.adair at hendersonengineers.com>
hendersonengineers.com<http://www.hendersonengineers.com/>
Licensed in KS
Sending me large files? Please use Henderson File Share<https://apps.hendersonengineers.com/FileShare/Upload?to=daric.adair@hendersonengineers.com> | TX ID #F-001236
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