I am trying to design my own ventilation ducting and simulate the results using SimScale. My goal is to install a system which would cost at most 2000€ so I will get standard ducts and fitings from airguru.ro and perhaps a Vents VUE 250 ERV. So far I feel I am making progress but I need some feedback from you guys to see if I’m on the right track.
Basically, here it’s a duct connected to an ERV capable of 250 m^3/h (150 cfm) and which sends air to 4 outputs.
I estimate that air requirements on each output are 50 m^3/h (30 cfm) but I have no ideea how to actually verify if those requirements are met.
I have two slightly different simulations. In a second version I decreased the size of two of the ducts. Is that any better/worse or it doesn’t matter?
Can you please advice how to interpret the results? Does my design make any sense?
Do you have any suggestions for optimizing this?
There’s an easy way to verify if those requirements are being met: by setting appropriate result controls. In this case it sounds like you’re looking for area integrals:
You can select the patches of interest and the software will give you the resulting flow rate in m³/s.
Based on this, you should be able to tweak the geometry and achieve the flow rates you’re looking for
And just in case… keep in mind that air flowing through a pipe can generate quite a lot of noise at high velocities.
From what I understand, this chart tells me that the flow rate is ~12m^3/h (0.0035*3600) ?! My understanding by looking at velocities and multiplying it with the area of the output is the flow rate should be at least double. Also, I am putting in 160m^3/h (1m/s through 12cm pipe) and I am getting out less than a quarter of that. What am I missing here?
