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1 | initial version |
For unmet hours: - The eplus html and unmet load hours troubleshooting still show you are using a 0.36F tolerance. Change this to 2F. This will get rid of most unmet hours. - occupied unmet hours are quite small; there is one zone with > 300 occupied cooling unmet hours, and this is because there is a spikey cooling setback and some residual system osscillation during unoccupied periods from the system during on/off. Either set the cooling setpoint to constant, or make the setback less extreme and for a longer duration. - check that the default schedule doesn't show residual occupancy (~5% occupied) outside of the HVAC operation schedule. EnergyPlus will report these as occupied unmet hours, even if the building is largely unoccupied.
On the warnings: - There is an oscillation issue in your cooling system and condenser loop, which is likely a result of night cycling and the rigid tolerance threshold above. The system is cycling on/off quickly becasue of the low tolerance at a rate smaller than the simulation timestep. - There are no severe warnings, just issues where design and user sizing values do not match on your VAV terminals. Check that the sizing values are aligned.
For your research project, ASHRAE 90.1-2019 is not yet available as a template option for Create DOE Prototype Building. You will need to update HVAC efficiency, envelope, lighting, and other properties in your model to match 90.1-2019.
2 | No.2 Revision |
For unmet hours:
- hours:
On the warnings:
- warnings:
For your research project, ASHRAE 90.1-2019 is not yet available as a template option for Create DOE Prototype Building. You will need to update HVAC efficiency, envelope, lighting, and other properties in your model to match 90.1-2019.