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Create a E+ output variable with the sum of all Cooling coil rates

asked 2020-06-26 09:37:34 -0500

Vasco Zeferina gravatar image

updated 2020-06-26 09:48:13 -0500

I am running DOE large office reference building model in EnergyPlus, and I would like to create Monthly Cooling Maximum reports, which would include results of the sum of all cases of one type of variable.

For example: HVAC,Average,Cooling Coil Sensible Cooling Rate [W] HVAC,Average,Zone Air Terminal Sensible Heating Rate [W]

These variables are not included in the meter list (mtd) of the model.

How can I report these and other variables, sum all of them the facility level and then create outputs of the variable?

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answered 2020-06-26 10:49:43 -0500

updated 2020-06-29 04:38:46 -0500

If you cannot find a meter that fits your need, then find the Output:Variables you need, then create a Meter:Custom

Edit: based on comment below.

There are more than a few questions on this website that can also help in addition to the E+ I/O reference Guide I linked to.

Anyways, your MeterCustom isn't working because the 'Key Name' cannot be empty.

Assuming you have only two AirTerminals named "ATU 1" and "ATU 2", your meter should look like this:

Meter:Custom,
    Test,                    !- Name
    Generic,                 !- Fuel Type
    ATU 1,                        !- Key Name 1
    Zone Air Terminal Sensible Cooling Rate,  !- Output Variable or Meter Name 1
    ATU 2,                        !- Key Name 2
    Zone Air Terminal Sensible Cooling Rate;  !- Output Variable or Meter Name 2

Note that if you want to include ALL "Zone Air Terminal Sensible Cooling Rate", you can also try with a * (or any valid regular expression) for the Key Name (I haven't tried this myself. I know it works with a Meter:CustomDecrement, but unsure for Meter:Custom).

Meter:Custom,
    Test,                    !- Name
    Generic,                 !- Fuel Type
    *,                        !- Key Name 1
    Zone Air Terminal Sensible Cooling Rate;  !- Output Variable or Meter Name 1
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I have created the meter:Custom Object:

Meter:Custom,
    Test,                    !- Name
    Generic,                 !- Fuel Type
    ,                        !- Key Name 1
    Zone Air Terminal Sensible Cooling Rate;  !- Output Variable or Meter Name 1

I have also reported the variable:

Output:Variable,*,Zone Air Terminal Sensible Cooling Rate,hourly;

When I look at the mtd file my meters have no content.

Why is this?

Vasco Zeferina gravatar imageVasco Zeferina ( 2020-06-26 11:46:35 -0500 )edit

Let me edit my answer to clarify.

Julien Marrec gravatar imageJulien Marrec ( 2020-06-29 04:33:27 -0500 )edit
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answered 2020-06-26 09:44:39 -0500

khaddad gravatar image

Every output variable has a frequency input field. Have you tried using that?

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Asked: 2020-06-26 09:37:34 -0500

Seen: 256 times

Last updated: Jun 29