What flow rate is required for the DN20, DN25, and DN40 circulation pipes in the Shanxi region during winter to prevent freezing?
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I would also appreciate some guidance from those with experience in this area. O(∩_∩)O Thank you
It’s off-topic; the question is about the flow rate – what is it? :P
The flow rate can be calculated for a semi-open condition; go ahead and calculate it.
:Lol hehe, exchanging one whole thing for another – what’s the normal amount? :lol
1.5 is normal, right? Actually, I don’t really know either
For normal, unresisted conditions, the requirement is ≤3 m/s; for resisted conditions, it is determined through calculation.
Isn’t half of 3 1.5? Actually, I don’t know either.
You’re too modest; I learn from you*.