VRF outputs in OpenStudio
I'm modeling a VRF system with a DOAS using the VRFwithDOAS HVAC whole system measure.
Under the zone equipment detail in the OpenStudio Results nothing is showing up for sizing.
This is similar under the zone report (OpenStudio Measure). It doesn't appear as if the VRF heating/cooling coils are auto-sizing. Although it looks like the fans are.
There aren't many unmet hours. However, I'm not convinced that the load is being picked up by the VRF coil. It could be picked up by the DOAS.
Is it common for VRF coil sizes to not show up properly in the OpenStudio output report?
Any direction would be helpful. Thank you.
Could you please make a separate post for each question so they are easier to search for? These are both good questions that I have had before.
I created a second question. See: EnergyPlus output variables in OpenStudio
Do you have design days in your model?
In the standard report, at a minimum the name of each component will show. For each HVAC component type that we wanted to show additional information, we have to hand code logic on what to show. In some cases there are decisions we need to make about which or how many characteristics to show. The coverage is not comprehensive, so we certainly could update or could take contributions from others who wan to update the logic for additional components. Air loop and plant loop detail follow similar logic. I can add VRF to list to add next time the measure is changed.
I do, mdahlhausen.
That would be great David
A few more questions - do your zones have thermostats, and are you seeing heating and cooling in your model? Does the VRF sizing show up in the energyplus results (NOT openstudio results)?
I am able to find the "Design Size Gross Rated Total Heating/Cooling Capacity" for the Coil:Heating/Cooling:DX:VariableRefrigerantFlow under the Component Sizing Summary for the Entire Facility. The coils are not listed under the Equipment Summary, but the VRF fans are.
I have a heating and cooling set point schedule applied to the zones under the thermal zones tab.
One last question - do you have the "Do Zone Sizing Calculation" checked in your Simulation Control tab under Simulation Settings in OpenStudio? Can you upload and post a link to the model?
Yes, "Do Zone Sizing Calculation" is checked. Where do I upload the model? I'd appreciate the help.