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How to model an innovative indirect evaporative cooling system in energyplus?

asked 2025-06-24 07:25:32 -0500

updated 2025-06-25 10:32:57 -0500

I have a question for you — I’d like to model within my air loop an object similar to an indirect evaporative cooling system, but with some modifications. I have technical data that, based on outdoor temperature and humidity, provide output values for the air after it has been treated by the cycle in question.

Since I don’t have much time available, what I’d like to do is force the temperature and relative humidity values within my air loop based on the data read at a previous node, using a table that maps outdoor environmental conditions to output data.

Could you help me develop a strategy to implement this idea?

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@gianmarco what simulation tool are you using? Please mention it in the title or body of your post, as well as add a tag so that others can provide better help.

Aaron Boranian's avatar Aaron Boranian  ( 2025-06-24 11:53:35 -0500 )edit

Thank you so much for your answer, I created my model in OpenStudio and after I exported it as an .idf file in EnergyPlus

gianmarco's avatar gianmarco  ( 2025-06-25 02:58:01 -0500 )edit

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answered 2025-06-28 07:58:04 -0500

I do not know of a way to directly manipulate air loop nodes. However, you can schedule conditions for the Outdoorair:node. EnergyPlus allows you to have multiple outdoorair:nodes that can be assigned to separate objects. Perhaps you could set up an air loop with outdoor air system that reads from a custom outdoorair:node that has your pre calculated conditions. You would have to run the model multiple times until your calculations converge (because of the feedback from your inputs). Here is more information on the object: https://bigladdersoftware.com/epx/doc...

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Asked: 2025-06-24 07:25:32 -0500

Seen: 94 times

Last updated: Jun 28