[Bldg-sim] energy plus/open studio hourly results (DView)

[David Eldridge]

Speaking of IBPSA-USA – I didn’t post an announcement here but please pre-register if anyone will be attending and hasn’t signed up yet. The Eventbrite built-in reminder hasn’t been working, so I’m worried there are a few people that normally would come but haven’t been sufficiently reminded.

https://www.eventbrite.com/e/2019-summer-meeting-in-kansas-city-ibpsa-usa-tickets-60221903334

Pre-registration allows us to plan for the food order, avoid a melee at the check-in desk, print badges (too late for this time, but in general sign up early to get a printed badge), and avoid much angst among the event organizers.

We now offer no-questions asked cancellation up through the date we provide an initial count to the restaurant (which was yesterday for KC – this will usually be 4-7 days prior to the event) and we’ll knock a few dollars off the cost for the convenience.

So – hope to see many of you there! Please let me know any questions.

David


David S. Eldridge, Jr., P.E., LEED AP BD+C, BEMP, BEAP, HBDP
Associate

Direct: (847) 316-9224 | Mobile: (773) 490-5038

Grumman/Butkus Associates | 820 Davis Street, Suite 300 | Evanston, IL 60201
Energy Efficiency Consultants and Sustainable Design Engineers

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From: Bldg-sim [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Michael J Witte via Bldg-sim
Sent: Thursday, June 20, 2019 3:53 PM
To: Nicholas Caton <Nicholas.Caton at se.com>
Cc: bldg-sim at onebuilding.org
Subject: Re: [Bldg-sim] energy plus/open studio hourly results (DView)

The structure of the various sql tables are fixed, but the contents of the sql time series output are completely user-specified. And generating output for the design day simulations is also optional. Each specified Output:Variable can be reported at one or more of the following frequencies: hvac timestep, zone timestep, hourly, daily, monthly, or annual.

So, to do as you suggest (always report drybulb and wetbulb to match the weather data), the user would create a snippet of input to add to every idf file specifying these output variables at the timestep frequency (due to sub-hourly interpolation it will match the hourly weather data once per hour).

Always interested in building bridges. Maybe we can pique your curiosity enough to consider adding another tool to your toolbox. :-)

Mike
p.s. See many of you soon in KC for ASHRAE and IBPSA-USA.

On 6/20/2019 2:03 PM, Nicholas Caton wrote:
I sincerely appreciate the spirit of building bridges in 2 directions, thanks so much Mike!

Out of curiosity, does energy+ as an engine, or else any of its major interfaces, permit an end-user to tweak this .sql output to always (by default, with all projects) include as an example drybulb and wetbulb at intervals to match the source weather data fed in, or are the contents/structure of this particular output kinda “boxed up?”

With your input, I might suggest some additional steps for anyone following along:

  *   Trimming and/or isolating the first ### rows of data to review regular simulation and design day information separately. Alternatively these are likely tagged in some fashion I haven’t discovered yet in the SQL structure and could be filtered in/out based on that tag.
  *   By using ReportVariableWithTime, it sounds like you can avoid the extra steps I suggested to convert the interval count (the x-axes in the visuals below) into DateTime format.
  *   Once pivot charts/tables have properly formatted DateTime stamps generated (or fed in), they can do a number of new magical things around grouping and displaying min/max/avg/more-complicated calcs with dynamic grouping.  So for example with the same query you could have a visual that lets you start at an annual 12-month view then “zoom” into a specific month/week/day/hour to see the data at its full resolution or any grouping in between.

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