[Equest-users] VFD fan motor in simulation results

Sun Oct 30 03:51:10 PDT 2016

Thanks a lot Nick.
I totally agree with you, this is a very useful part of eQuest that must be
well shown and demonstrated.

Best Regards,

On Thu, Oct 27, 2016 at 9:25 PM, Nicholas Caton <
Nicholas.Caton at schneider-electric.com> wrote:

> Everyone:
>
>
>
> We as a community could really use a fully-illustrated write up on custom
> hourly reports – these sorts of questions come up a lot & it would be nice
> to be able to point others towards a walkthrough…
>
>
>
> Also someone inside eQUEST development should appending such an
> illustrated guide like that into the next opportunity to update the
> documentation tutorials – what’s there now in the doe2 reference is
> honestly lacking for the uninitiated.
>
>
>
> What follows might serve as a good framework for such an effort.
>
>
>
> Omar – here’s a step by step for tracking a system’s hourly fan power
> draw:
>
> ·         Select Project & Site tab
>
> ·         Double click any hourly report appearing in the component tree
> to open the Hourly report dialog
>
> ·         Click New Block
>
> o   Give it a descriptive name like “[systemname] Fan Power Block”
>
> o   Create from scratch à OK
>
> o   Variable type dropdown: find the associated system name
>
> o   Variable list:  ignore for now and just click “Done.”
>
> ·         Highlight the block you just created at the bottom of the left
> pane to view/edit
>
> o   On the right side you can now see fuller descriptions for each of the
> custom hourly report variables available.
>
> o   They’re not alphabetical, but note many end with units so that can be
> helpful when trying to scan the list for something specific
>
> o   At this point I usually have one thing in mind but try to also
> identify & include any series of variables that may relate & assist with
> verifying what I’m seeing later for hourly outputs.  In this case I might
> include the following (give or take, depending on the system type &
> context):
>
> o
>
> o   Rinse and repeat the above steps to create new blocks if you need to
> track other systems’ fans.  You can save steps with other blocks by copying
> the first instead of starting from scratch though.
>
> ·         Click New Report
>
> o   Name it something descriptive like “Tracking Fan Powers Report”
>
> o   Create from scratch à OK
>
> o   Select “Hourly Report Schedule”
>
> o   Select the one of the blocks you just made à OK
>
> o   Now highlight the report in the left tree, and use the list on the
> right to tick any additional blocks you may have created
>
> ·         Close this dialog
>
> ·         Simulate the model
>
> ·         File à Export à Hourly Results to generate & open a CSV with
> hourly outputs for every variable you selected.  Note you can create
> multiple hourly reports corresponding to baseline/parametric runs if you’ve
> defined them.
>
> o   You’ll need to scroll right to get past the default hourly reports
> that track end-use consumptions for typical reporting
>
> o   With the CSV open in a spreadsheet application like Excel, you can
> often do min/max averages, hourly algebra, and/or chart/plot those columns
> to figure out if you’re getting the intended behavior in the simulation.
>
> o   You can also generate this report while viewing SIM outputs in
> D2simviewer by clicking the button on the top-right
>
> o   You can also find these hourly results in the SIM report under
> “Hourly Result(s),” though in that text format it’s tougher to
> track/review/manipulate/chart
>
>
>
> Well there we have it… just missing some pictures and grammar I suppose!
>
>
>
> ~Nick
>
> *Nick Caton, P.E., BEMP*
>
>   Senior Energy Engineer
>   Energy and Sustainability Services
>   Schneider Electric
>
> D  913.564.6361
> M  785.410.3317
> E  nicholas.caton at schneider-electric.com
> F  913.564.6380
>
> 15200 Santa Fe Trail Drive
> Suite 204
> Lenexa, KS 66219
> United States
>
> [image: cid:image001.png at 01D189AB.58634A10]
>
>
>
>
>
> *From:* Equest-users [mailto:equest-users-bounces at lists.onebuilding.org] *On
> Behalf Of *Omar ElRawy via Equest-users
> *Sent:* Tuesday, October 25, 2016 5:48 AM
> *To:* equest <equest-users at lists.onebuilding.org>
> *Subject:* [Equest-users] VFD fan motor in simulation results
>
>
>
> Dear all,
>
> I have a VAV system, with an AHU fan motor that operates by a VFD. The VFD
> changes motor speed based on duct's pressure sensor.
>
>
>
> Now I just need to know how to read the simulated hour by hour motor's
> power in KW. I mean that the motor's rated power is 8 KW, but it is not
> expected to be drawing the 8 KW all day, knowing that I defined a variable
> speed as fan control, and a on/off/flag schedule to eQuest. So where in the
> simulation output can I read this change in motor's KW, if possible?
>
>
>
> Any help would be appreciated,
>
>
>
>
>
> Best Regards,
>
>
> ______________________________________________________________________
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