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2025 02 14 coordination
Date: February 14, 2025, 8:00 - 9:00 Pacific Times.
The purpose of this meeting is to coordinate the Modelica IBPSA Working Group.
Join from PC, Mac, Linux, iOS or Android: https://lbnl.zoom.us/my/mwetter
Or iPhone one-tap (US Toll): +14086380968,6614042296# or +16465588656,6614042296#
Or Telephone: Dial: +1 408 638 0968 (US Toll) or +1 646 558 8656 (US Toll) Meeting ID: 661 404 2296 International numbers available: https://lbnl.zoom.us/zoomconference?m=_h5BuJ686mPy3rWEyKf4NROxLaeOV5J8
Miscellanous (Lucas Verleyen issue with merging IBPSA to IDEAS, doodles for next meetings)
Building Simulation 2025 Paper
Geothermal models
Heat pumps
ATES model (Alessandro Maccarini)
ISO 13790 models (Alessandro Maccarini)
PV collector, battery and electrical component models (Laura Maier)
New state selection (Michael Wetter)
Organic Rankine cycle model (Casper)
Integration of new models into the library
OpenSCALING project updates
Progress on pull requests, https://github.com/ibpsa/modelica-ibpsa/pulls
| Michael Wetter, LBNL | Casper Fu, LBNL | Ettore Zanetti, LBNL
Michael will come out with an outline to be shared.
Is anyone working on
- inclined boreholes
- energy piles
- adding option for coaxial pipes to existing borehole/borefield models
Is anyone working on
- 4 pipe AWHP
- 6 pipe WWHP
- Dynamic model for defrost
Alessandro had a meeting with TU Delft, where we agreed on a set of simulation cases that vary based on three parameters: injection temperature (5°C, 20°C, 40°C), building size (10 kW, 100 kW, 1000 kW), and storage cycle (daily, weekly, and seasonal). The TU Delft team is currently running these simulations using SEAWAT. Once they complete their task, we will compare their results with those obtained from the Modelica-based simplified model.
PR ready to be merged. One model and documentation copy pasted?
No updates.
https://github.com/ibpsa/modelica-ibpsa/issues/1412
Michael work on model initialization? Difference of pressure instead of absolute pressure (in theory is better, in numerical simulation it seems inconclusive it depends on the models, scaling seems to work better) Comparison speed vs accuracy? (speed and if models actually run). Maybe use bounded attribute of real variables.
OCT has been updated and it is a work in progress.
#Issue1921 Fabian approved pull request, minor things Casper wants to address. Casper mentioned Philosophical question regarding the meaning of Validation model in IBPSA. Casper added a Python script to convert CoolProp fluid properties to Modelica points records. Add script to Resource folder.
New models to be developed/integrate:
- Discussions about others and future development, such as
- APPROVED
- enthalpy and energy recovery wheel (Oakridge national lab is working on a model for the Buildings that could be integrated)
- validation of models (No updates)
- CDL integration (No updates)
- preconfigured controls (No updates)
- NEED MORE DISCUSSION
- NEW: Zoned borefields (https://github.com/lbl-srg/modelica-buildings/pull/3812) (could be moved to IBPSA)
- thermal storage (No updates)
- better dynamic ground coupling of long district pipes (PR merged into Buildings, to be moved to IBPSA)
- more geothermal (horizontal loop, slinky loop, others) (Massimo could look into specific modelling efforts that have been done by co-workers)
- APPROVED
Kick-off meeting in November.
If interested in an advisory board work with Oliver Lenord to issue NDA contract.
Come up with requirements:
data source
large models (compilation, simulation, optimization, UQ)
provide library of models
computationally expensive ones
numerically problematic ones (see also https://ibpsa.github.io/modelica-challenge-problems/)