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2021 01 15 library development

Michael Wetter edited this page Jan 15, 2021 · 3 revisions

IBPSA Modelica Library Coordination

Date: January 15, 2021, 8am-9am Pacific Times The purpose of this meeting is to coordinate the development https://github.com/ibpsa/modelica-ibpsa

Meeting information

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

Agenda

Cooling coil (Donghun)

New state selection (Michael)

Refrigerant media (Christian Vering)

Ethylene Glycol (Massimo)

Steam media (Michael)

Simplified door model (Michael)

CONTAM-style models (Klaas)

Update on geothermal models (Massimo)

Visual enhancements of PartialTwoPort

Progress on pull requests, https://github.com/ibpsa/modelica-ibpsa/pulls

Participants

Massimo Cimmino
Donghun Kim
Antoine Gautier
Filip Jorissen
Michael Wetter

Minutes

Cooling coil

What's left: nominal UA calculation, ensuring relative humidity is not above 100%, eliminite iterations. Should have a pull request by the end of January.

New state selection

Ongoing analysis, https://github.com/ibpsa/modelica-ibpsa/pull/1413

Refrigerant media

No discussion.

Ethylene glycol

https://github.com/ibpsa/modelica-ibpsa/issues/1410 This has been merged on 1/6/21.

Steam media

Katy implemented a steam model for low/medium pressures steam heating systems, https://github.com/ibpsa/modelica-ibpsa/issues/1389.

Uses linear or quadratic property functions for thermodynamic properties.

Next step is to do system simulation models.

Simplified door model

https://github.com/ibpsa/modelica-ibpsa/issues/1353 and https://github.com/ibpsa/modelica-ibpsa/pull/1438

CONTAM-style models (Klaas)

Klaas made https://github.com/ibpsa/modelica-ibpsa/pull/1437 with additional models and refactored other models. Needs review. Model names should be made clearer (than what CONTAM is using now) and consistent with other models used in IBPSA.

Not clear if complexity of having either mass or volume flow is justified.

Update on geothermal models (Massimo)

Work in progress towards a BS'21 paper.

Work is ongoing to speed up current calculation and scales to larger borefields.

Visual enhancements of PartialTwoPort

Issue https://github.com/ibpsa/modelica-ibpsa/issues/1280.

See notes on ticket.

No work yet.

Progress on pull requests

Michael to go through issues and maybe mark as "won't fix" and close for now to keep it more manageable.

New action items

Michael to go through issues and maybe mark as "won't fix" and close for now to keep it more manageable.

Previous action items

Klaas to make pull request for new air flow models.

Fluid Property models (RWTH) RWTH intern development of R134a, R410A, R32, R407C, R290 and R744 merge in December, Paper in March Are there further fluid models of interest? We can add some more due to master's thesis.

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