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How to Put Loads on Separate Meters in OpenStudio?

asked 2016-06-01 16:26:22 -0500

I would like to break out an OpenStudio 1.11 model into energy costs controlled by the building owner and those controlled by tenants. Is there a way I could put all lights, plug-loads, and HVAC equipment on either an owner or tenant electrical meter? These meters would then have a demand utility rate applied to them. I am guessing I should use the measure "AddMeter" for each zone multiple times, or something similar.

I would like to do this for the LEED 2009 Core and Shell EAp2-c1 Alternative Compliance Path: http://www.usgbc.org/resources/cs-200...

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answered 2016-06-01 16:55:28 -0500

Your guess is correct. Here's what I'd do:

  1. Add custom meters that aggregate the loads the way you want. See this answer for some useful tips. In OpenStudio, you'll have to do this as an EnergyPlus Measure.
  2. Modify the generic tariff Measure to include your owner and tenant rates. Make sure you change the meter referenced from ElectricityPurchased:Facility to whatever your custom meters are called.
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Thanks @aparker. Is there already an EnergyPlus measure for creating Meter:Custom objects in OpenStudio? And, is there a limit to how many fields can be added to each custom meter because in IDF Editor there are only 22 key names.

kramerica gravatar image kramerica  ( 2016-06-02 09:48:20 -0500 )edit
1

If you modify the Energy+.IDD file you can add as many key names to Meter:Custom as you want since it is an "extensible" object. Just repeat the last two fields and make sure that a semi-colon only appears after the last one. That way you can show more in the IDF Editor.

JasonGlazer gravatar image JasonGlazer  ( 2016-06-02 10:12:10 -0500 )edit

Also, I believe the Meter:CustomDecrement could work by subtracting particular meters from a source meter, rather than adding up dozens of meters.

kramerica gravatar image kramerica  ( 2016-06-02 11:14:47 -0500 )edit

I see how to add new meters, but hope someone could give further detail on how to assign uses to specific meters. For example, how do I assign the common corridor lights to the 'Base Building' meter while the tenant lights are assigned to the 'tenant' meter?

Dan McJacobson gravatar image Dan McJacobson  ( 2016-10-17 12:55:00 -0500 )edit

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Asked: 2016-06-01 16:26:22 -0500

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Last updated: Jun 01 '16