Question-and-Answer Resource for the Building Energy Modeling Community
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In OpenStudio, the Glycol Conentration in the PlantLoop object is wrapped by the glycolConcentration parameter, which you can see from the SDK, is a int value. I went into the source code on GitHub and found that the Forward translator multiplies this number to get is as a percentage. I wonder what was the decision behind this implementation.
Therefore, you have to input 50% glycol concentration as 50. When the model get's translated, it will be multiplied 50*0.01 and be passed to the IDF as 0.5.
