IFC 4.4.0.0 build 20261005 (IFC4X4_DEV_20260525) โš  buildingSMART Working Draft. All content is under development.

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TotalUACurves

Semantic definition

Total UA curves, UA - air and water velocities, UA = [(C1 * AirFlowRate\^0.8)\^-1 + (C2 * WaterFlowRate\^0.8)\^-1]\^-1. Note: as two variables are used, DefiningValues and DefinedValues are null, and values are stored in IfcTable in the following order: AirFlowRate,WaterFlowRate,UA. The IfcTable is related to IfcPropertyTableValue using IfcMetric and IfcResourceConstraintRelationship.

Referenced in
Pset_CoilTypeHydronic
Table A

Edit on Github

3 contributor(s): ArturTomczakThomas KrijnenbSI-Bot
Last change: Add missing dot, remove double spaces and start with a capital letter by ArturTomczak on 2026-04-27T17:50:19+02:00

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