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How to output humidity ratio of zone in EnergyPlus?

asked 2016-11-30 08:48:27 -0500

Mike06's avatar

updated 2016-12-01 13:25:32 -0500

Is there an option to output humidity ratio (g/kg or absolute humidity g/m3) of Zone from EnergyPlus simulation as output variable? Does anyone have experience with that? Or do I have to calculate those values from relative humidity?

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answered 2016-11-30 10:14:55 -0500

Urado's avatar

updated 2016-11-30 10:16:13 -0500

There is an output Zone Mean Air Humidity Ratio. You can add it to the Output:Variable of your model.

The unit is kgWater/kgDryAir.

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Great, thank you! Now I know it is there, I found it in the documentation. But I think it should be Zone Air Humidity Ratio (without the Mean) ... at least according to the Input Output Reference ? documentation

Mike06's avatar Mike06  ( 2016-11-30 13:54:36 -0500 )edit

In the .rdd I have both. It's the same for Zone Air Temperature and Zone Mean Air Temperature which give the same results. It may show some differences with specific timesteps.

Urado's avatar Urado  ( 2016-12-01 04:00:10 -0500 )edit

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Asked: 2016-11-30 08:48:27 -0500

Seen: 533 times

Last updated: Nov 30 '16