Hey Cathar -
The point to the flow rate question was to support a point I had made long ago. That is, you don't need "allot" to work "well". I did similar testing and when posted my thoughts and early results, it of course, was translated into you don't need good flow. Which of course, ppl took and extrapolated to the n'th degree, Bill was one of those ppl. So Bill is right, it is a bit of an axe. Basically flow IS important, however you can obtain reasonable and even good results with lower flows as well...
The point to the rate question is NOT to rehash what was said earlier. I understand the addition thing, I've accepted that. Since the backpressure is a function of velocity, once the 1st reduction is placed in line the velocity reduces significantly. Now when a 2nd restriction is added, the velocity drops of non-linearly. Hence, how close do we need to be? Is saying the 1st drop is a "reasonable" approximation in some situations? I suspect yes.
|