[Equest-users] Where did the underheated and undercooled hours go in DOE2.3?

[Chris Hadlock]

Thank you Bill and others for their response which helped provide the
answer.

I had forgotten (older but apparently not wiser) that underheated and
undercooled hours are only reported for hours when the fans are scheduled
to be ON. So even though my fans were running most hours (using "Cycle On
Any" as the Night Cycle Control), no unmet hours were being reported as my
fan schedule was modeled with an OFF fan schedule (ratio of 0 for all
hours).

Chris

On Thu, Mar 30, 2023 at 12:17 PM Bishop, Bill <bbishop at pathfinder-ea.com>
wrote:

> Chris,
>
> I often get unmet heating and/or cooling hours in Build 7175, though I get
> the impression that my DOE2.3 models generally have fewer unmet hours than
> my DOE2.2 models did, probably due to simulation engine improvements but
> also due to me being older and in some ways, wiser. 😉
>
> If you care to share your model files, perhaps someone will take a look.
>
> Regards,
>
> ~Bill
>
>
>
> *William Bishop, PE, BEMP, BEAP, CEM, LEED AP **|* *Pathfinder Engineers
> & Architects LLP*
>
> *Senior Energy Engineer*
>
> [image: Logo, company nameDescription automatically generated]*      T:
> (585) 698-1956*                  www.pathfinder-ea.com
>
> [image: IconDescription automatically generated]bbishop at pathfinder-ea.com
>
> 134 South Fitzhugh Street
>
> Rochester, NY 14608
>
>
>
> Buffalo Office: 100 Corporate Parkway, Suite 116, Amherst, NY 14226
>
>
>
> *From:* Equest-users <equest-users-bounces at lists.onebuilding.org> *On
> Behalf Of *Chris Hadlock via Equest-users
> *Sent:* Thursday, March 30, 2023 11:07 AM
> *To:* equest-users at lists.onebuilding.org
> *Subject:* [Equest-users] Where did the underheated and undercooled hours
> go in DOE2.3?
>
>
>
> I've suddenly realized I'm not getting any underheated (UH) or undercooled
> (UC) hours listed in my SS-R report for any of my recent projects, all of
> which were done using build 7175 in DOE 2
>
> Caution! This message was sent from outside your organization.
>
> sophospsmartbannerend
>
> I've suddenly realized I'm not getting *any* underheated (UH) or
> undercooled (UC) hours listed in my SS-R report for any of my recent
> projects, all of which were done using build 7175 in DOE 2.3.
>
>
>
> Even when I purposefully simulate conditions where underheated/undercooled
> hours are occurring, they aren't being reported. I've checked hourly
> temperatures (Tstat setpoints versus zone temperature) so I know there are
> UH and UC hours. This is occurring with different system types (I've
> checked PSZ and fan coil) and different thermostat types (two-position and
> proportional) and my throttling ranges are generally default values. I'm
> stumped.
>
>
>
> I never had this issue with DOE 2.2 (albeit I was always using 7173 in the
> past). I work with a lot of 2-pipe fan coil systems where UH and UC hours
> are in abundance.
>
>
>
> Has anyone else noticed they are no longer getting underheated and
> undercooled hours in DOE2.3?
>
>
>
> Thanks,
>
>
>
> ---
> *Chris Hadlock*, M.A.Sc
> <https://us-east-2.protection.sophos.com?d=a.sc&u=aHR0cDovL00uQS5TYw==&i=NWZjNTI0OTJkYjA1OTYwZGY1NmNjOGVj&t=SEJ3Q0E4bm1nN3hVMHd2WlFvWW1QSTZveUxIMCtocG1oOTRRSEpsb3M0ND0=&h=5bfc4e8bd5804a39914e87b56680850d&s=AVNPUEhUT0NFTkNSWVBUSVaABQu4VeDzY-e9mKaryyriU8q7hezF8Oyn75MLo7t4Tr2MkfRWI7oFjCSs3eWou34>., P.Eng,
> LEED AP BD+C
> Founder & Senior Energy Consultant
>
> HADLOCK CONSULTING
> 201 Candlewood Cr
> Waterloo, ON N2L5T3
>
> (226) 343-5599
>
> www.hadlockconsulting.ca
> <https://us-east-2.protection.sophos.com?d=hadlockconsulting.ca&u=aHR0cDovL3d3dy5oYWRsb2NrY29uc3VsdGluZy5jYS8=&i=NWZjNTI0OTJkYjA1OTYwZGY1NmNjOGVj&t=TGNKeUp4ZUNMdDFnWWJVTXFOa1JSUXJ1VE1zMWZqWGI0NXZDN2xXR1djbz0=&h=5bfc4e8bd5804a39914e87b56680850d&s=AVNPUEhUT0NFTkNSWVBUSVaABQu4VeDzY-e9mKaryyriU8q7hezF8Oyn75MLo7t4Tr2MkfRWI7oFjCSs3eWou34>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20230330/bf2737ea/attachment.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image002.jpg
Type: image/jpeg
Size: 5381 bytes
Desc: not available
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20230330/bf2737ea/attachment.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image004.jpg
Type: image/jpeg
Size: 1413 bytes
Desc: not available
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20230330/bf2737ea/attachment-0001.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image006.jpg
Type: image/jpeg
Size: 1301 bytes
Desc: not available
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20230330/bf2737ea/attachment-0002.jpg>