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2017-02-06 05:22:47 -0500 received badge  Scholar (source)
2017-02-06 05:22:24 -0500 commented answer Creating a ventilation system with specified overall ach and outdoor ach

Thank you, works like a charm! Could I also put 10 ACH as the maximum flow rate and then make the fresh air ACH vary between 50% and 100% of the maximum flow rate?

2017-02-06 05:22:08 -0500 answered a question Creating a ventilation system with specified overall ach and outdoor ach

Thank you, works like a charm! Could I also put 10 ACH as the maximum flow rate and then make the fresh air ACH vary between 50% and 100% of the maximum flow rate?

2017-02-03 12:06:25 -0500 received badge  Student (source)
2017-02-03 10:53:14 -0500 asked a question Creating a ventilation system with specified overall ach and outdoor ach

I have been trying to make an air loop in OpenStudio with several zones and a standard of 10 air changes, where the recirculation rate is max 50%.

So basically I would like a minimum of 5 fresh air changes and a total supply air flow of 10 air changes. I can not figure out how to do this, I have tried setting the outdoor air flow air changes per hour to 5 and the design supply air flow rate to the double of that amount, but almost no air is recirculated when I run the simulation.

Does anybody have recommendations?