How to resolve 1 Spd DX Clg Coil 7 is not aircooled or condenser type is aircooled?

asked 2025-02-19 15:03:42 -0500

angelson
31 ●4

Hello, I used OpenStudio versions 3.3.0 and 3.9.0 to simulate air conditioner faults. I used "EnergyPlus Measures" for faults such as condenser fouling, refrigerant undercharge, liquid line restriction... I set the condenser type to "aircooled," but the simulation always fails. Error: "1 Spd DX Clg Coil 7 is not aircooled."

answered 2025-02-21 08:51:45 -0500

JK
11 ●1 ●2

As mentioned in this article, those measures were tested and validated with OS 2.8. And they were never updated with later openstudio versions. So that's one thing.

But if you can attach a simple model, I might be able to look through and see if it can be an easy fix.

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OK. I’ll share a simple model with you, but please contact me at my email address: ramananandru@gmail.com.

angelson ( 2025-02-23 09:45:11 -0500 )edit

As you recommended, I added the HardSizeHvac measure to the model. The simulation runs successfully in OpenStudio without errors using EnergyPlus measures.

However, when I export the model to EnergyPlus to analyze its impact, the measures are not transferred, and the simulation results remain the same across different fault severity levels.

angelson ( 2025-02-23 09:45:42 -0500 )edit

Similarly, even when using an OpenStudio measure, the simulation runs without errors but does not apply the measure.

I tested this with a ThermostatBias measure as an example, and the results remain the same for different bias values.

angelson ( 2025-02-23 09:50:16 -0500 )edit

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How to resolve 1 Spd DX Clg Coil 7 is not aircooled or condenser type is aircooled?

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How to resolve 1 Spd DX Clg Coil 7 is not aircooled or condenser type is aircooled? edit

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How to resolve 1 Spd DX Clg Coil 7 is not aircooled or condenser type is aircooled?