First time here? Check out the Help page!

Question-and-Answer Resource for the Building Energy Modeling Community
Get started with the Help page
Ask Your Question
1

VRF outputs in OpenStudio

asked 8 years ago

clguen's avatar

updated 5 years ago

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.

image description

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.

image description

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.

Preview: (hide)

Comments

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.

kramerica's avatar kramerica  ( 8 years ago )
1

I created a second question. See: EnergyPlus output variables in OpenStudio

clguen's avatar clguen  ( 8 years ago )

Do you have design days in your model?

mdahlhausen's avatar mdahlhausen  ( 8 years ago )
1

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.

David Goldwasser's avatar David Goldwasser  ( 8 years ago )

I do, mdahlhausen.

clguen's avatar clguen  ( 8 years ago )

1 Answer

Sort by » oldest newest most voted
2

answered 8 years ago

kramerica's avatar

For your second question, you can add output variables in OpenStudio with the OS measure "AddOutputVariable" under the "Reporting -> QAQC" measures. You then type in the output variable name similar to how you would in IDFEditor.

Preview: (hide)
link

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

Training Workshops

Careers

Question Tools

2 followers

Stats

Asked: 8 years ago

Seen: 1,313 times

Last updated: Sep 26 '16