[Equest-users] [Bldg-sim] schedule for process energy
Christina LaPerle
christina at karpmanconsulting.net
Fri Feb 5 03:35:23 PST 2021
Hi Nick,
As always, a great summary. Can you please explain below. Is there any easy
way to import schedules into eQuest other than populating the INP file
directly (which I do not find to be very efficient) or using the user
interface (also not very efficient)? Always looking for ways to streamline
and improve the modeling process.
"I have had a lot of luck (with a sprinkling of misfortune as well)
learning to deploy data loggers of various sorts to track real world plug
and process loads (among other things). Such measurement data can be
converted via with Excel pivots and EMIT to generate fractional
schedules directly
push-able into calibrated eQuest modeling efforts. Would I recommend it?
YES. Even if you only rarely this sort of kit, the *experience* of
exploring “where the sidewalk ends” for in-depth fractional schedule
development is valuable. I found the experience enabled me to realize
certain challenges were surmountable that would have seemed intractable
otherwise. There’s a story or two in here for another day, but for now I
guess I’ll sign off with the following: “Standard/Library schedules are
*often* good enough, but sometimes are not. Recognizing/Intuiting when the
standard is not good enough is a skillset you can accelerate with exposure
to deploying loggers and analyzing/utilizing their measurements.”
Thanks!
*Christina LaPerle* PE, BEMP, CEM, CBCP
Senior Energy Engineer
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On Fri, Feb 5, 2021 at 12:20 AM Nicholas Caton via Equest-users <
equest-users at lists.onebuilding.org> wrote:
> Just adding to Daric’s excellent summary:
>
>
>
> Certain state, city, and utility incentive program standards also
> prescribe unique fractional schedules and/or peak loads (W/ft2) for
> people and misc loads (based on primary building occupancy type), but
> sometimes these are wholesale copied/pulled from the same schedule sources
> Daric cited below. You’ll find the NREL reference building
> <https://www.energycodes.gov/development/commercial/prototype_models>
> models also utilize some of the same schedules as a starting point.
>
>
>
> The last resource that comes to mind is Fishnick -
> https://fishnick.com/cecplug/ . This is specific to defining kitchen &
> food service process/equipment loads. Not applicable for every building
> energy model but on the occasion you need to “go deep” on kitchens it’s
> worth perusing.
>
>
>
> I hold the opinion these “standard” schedules are in many cases “good
> enough,” certainly for prescribed modeling efforts and new construction
> (when real-world schedules are not yet knowable), and even for calibrated
> efforts where model outputs require a quantified degree of
> certainty/accuracy… I say “good enough” because these schedules generally
> fall within a “reasonable range of realities.” In the similar vein, I
> would observe that schedules generated by the eQuest wizards (which
> procedurally “weight” a similar library of occupancy-specific schedules
> based on the diversity of space occupancies assigned per shell) again often
> fall well inside of a probable range of reasonable approximations for
> interior (people/light/equipment) load scheduling.
>
>
>
> If however you wish to go further, as I’d advise in consideration of an
> ECM critically dependent upon / sensitive to a fractional schedule, then
> you will want to put more thought into tweaking standard/library schedules,
> or else building a project-specific schedule from scratch.
>
>
>
> I have had a lot of luck (with a sprinkling of misfortune as well)
> learning to deploy data loggers of various sorts to track real world plug
> and process loads (among other things). Such measurement data can be
> converted via with Excel pivots and EMIT to generate fractional schedules
> directly push-able into calibrated eQuest modeling efforts. Would I
> recommend it? YES. Even if you only rarely this sort of kit, the
> *experience* of exploring “where the sidewalk ends” for in-depth
> fractional schedule development is valuable. I found the experience
> enabled me to realize certain challenges were surmountable that would have
> seemed intractable otherwise. There’s a story or two in here for another
> day, but for now I guess I’ll sign off with the following:
> “Standard/Library schedules are *often* good enough, but sometimes are
> not. Recognizing/Intuiting when the standard is not good enough is a
> skillset you can accelerate with exposure to deploying loggers and
> analyzing/utilizing their measurements.”
>
>
>
> ~Nick
>
>
>
> *Nick Caton, P.E. (US), BEMP*
>
> *ニック* *ケートン**, P.E. (US), BEMP*
>
> Senior Energy Engineer
> Energy Manager, Yokota Airbase
>
> ESS - Energy & Sustainability Services
>
> M JP
> M US
> Email
>
> +81 . 070 . 3366 . 3317
>
> +1 . 785 . 410 . 3317
>
> nicholas.caton at se.com
>
> シニアエネルギーエンジニア
> 横田基地エネルギーマネージャー
> ESS - エナジー持続可能性サービス
>
>
>
>
>
>
>
>
>
> *From:* Bldg-sim <bldg-sim-bounces at lists.onebuilding.org> *On Behalf Of *Daric
> Adair via Bldg-sim
> *Sent:* Monday, January 25, 2021 11:53 PM
> *To:* Linda Lawrie <linda at fortlawrie.com>; Francesco Passerini <
> fpasserini.tn at gmail.com>
> *Cc:* bldg-sim at lists.onebuilding.org
> *Subject:* Re: [Bldg-sim] schedule for process energy
>
>
>
> [External email: Use caution with links and attachments]
> ------------------------------
>
>
>
> ASHREA 90.1-20xx User Manuals > Appendix G chapter have some use
> schedules, but may not be to the level of detail desired.
>
> California, as part of their codes/CBECCcom software publish reference
> appendices:
> https://ww2.energy.ca.gov/title24/2016standards/ACM_Supporting_Content/
> <https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fww2.energy.ca.gov%2Ftitle24%2F2016standards%2FACM_Supporting_Content%2F&data=04%7C01%7CNicholas.Caton%40se.com%7C86e331d1b21e4bc3907d08d8c140eef0%7C6e51e1adc54b4b39b5980ffe9ae68fef%7C0%7C0%7C637471831920109269%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000&sdata=OYC854dj3WvP%2BD9bAbE4sOIOyNCzQZRnAzCHlvUW%2FY8%3D&reserved=0>
>
> Again, probably not at the level you might be seeking. But also some other
> really good reference info in those appendices.
>
> eQuest Wizard mode also generates schedules based on selected building use
> type and can/does adjust those for operating hours selected in the wizard.
>
> For general practice, we use those for reference, but then adjust to fit
> the anticipated use building. Ex: there are Misc equipment schedules for
> Restaurants, but if the project you’re on is a Breakfast/Lunch Diner,
> adjust the schedules for those meals, and remove dinner/evening schedules).
> We also use the eQuest schedules generated to get ‘close’ and then make
> manual tweaks from there.
>
>
>
> Hope this helps.
>
> Thanks,
>
> daric a
>
>
>
> *From:* Linda Lawrie <linda at fortlawrie.com>
> *Sent:* Sunday, January 24, 2021 12:17 PM
> *To:* Francesco Passerini <fpasserini.tn at gmail.com>
> *Cc:* bldg-sim at lists.onebuilding.org
> *Subject:* Re: [Bldg-sim] schedule for process energy
>
>
>
> I thought it was in one of the ASHRAE Handbooks.
>
> At 09:33 AM 1/24/2021, Francesco Passerini via Bldg-sim wrote:
>
> Hello, do you know some document that provides information relative to the
> schedules (profiles) that I can consider for process equipment, please?
>
> ------
> Linda
>
> FIBPSA, FASHRAE
> http://climate.onebuilding.org
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