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Adding Heating Source to Desuperheater

asked 2019-05-14 07:33:28 -0500

Saif gravatar image

updated 2019-05-14 07:40:19 -0500

I am writing a measure to add a DOAS that cools, dehumidify then reheat the air using a two stage dx cooling coil and a desuperheater. The measure runs successfully, but when I run the simulation this severe error shows up

* Severe * <root>[Coil:Heating:Desuperheater][Coil Heating Desuperheater 1][heating_source_object_type] - "CoilSystem:Cooling:DX" - Failed to match against any enum values.

The reason for that is OS plugging “CoilSystem:Cooling:DX” as the heat source instead of two stage cooling coil. I used the two stage cooling coil variable directly and the “to_CoilCoolingDXTwoStageWithHumidityControlMode.get” in the “setHeatingSource” method but the results were the same. Is there another way to access the two stage cooling coil?

# make a two stage cooling coil. 
doas_dx_cooling_coil =
air_loop_comps << doas_dx_cooling_coil

# make a desuperheater 
doas_desuperheater =
air_loop_comps << doas_desuperheater

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answered 2019-05-14 08:23:43 -0500

What version of OpenStudio are you using? I believe this was fixed in v2.8.0, see

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I am using v2.6.0. I will update to v.8.0

Thank you,

Saif gravatar imageSaif ( 2019-05-14 11:12:44 -0500 )edit

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Asked: 2019-05-14 07:33:28 -0500

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Last updated: May 14 '19