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Most Accurate way of totaling HVACTemplate:Ideal loads; Meter or Output Variable?

asked 2021-07-06 12:39:34 -0500

Ross B. gravatar image

updated 2021-07-09 16:33:37 -0500

Hi All, I am trying to figure out the most accurate way of totaling the zone energy demand. I am asking because if I total the output variable for each zone using the "Zone Ideal Loads Zone Total Heating Energy Zone Ideal loads" I get a different heating energy use then if I looked at the "District Heating HVAC" meter.



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answered 2021-07-06 14:36:32 -0500

As you alluded to, when you use Ideal Loads Air Systems in EnergyPlus it applies all energy consumption to district heating/cooling. What you may be seeing in the difference between Ideal Loads Heating output variables and District Heating HVAC meter is the COP of the district heating. This can be set using the District Heating Efficiency input field of the EnvironmentalImpactFactors object.

You can read more details about Ideal Loads and District Heating in other posts here and here.

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Asked: 2021-07-06 12:39:34 -0500

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Last updated: Jul 06