Quote:
Originally posted by GeminiCool
if you had a 1" diameter hose and reduced it through a 1/4" hole, then back up to 1" then back down... where will the backpressure be GREATEST. You are such an ass! The resistance felt at the 1st reduction will be ORDERS of magnitude greater.
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I'm not going to bother defending Bill's mode of operation. Everyone knows his style. I also know nothing of your history with him. All I'll say is if you wish to make him look like he doesn't know his stuff, make certain what you say is correct. Your statement above is flat out wrong. I'll do you the courtesy of explaining why.
Flowrate throughout a single-path system is a constant. This means that regardless of where one places a given component, velocity and volumetric flow through that component is a constant. This means that pressure drop across a component is a constant.
If you have one inch tubing and place a single 1/4" restriction in the line, you'll have a specific total flowrate with the greatest pressure drop occuring at the 1/4" restriction. If you now place two runs of one inch tubing, each with a 1/4" restriction, in series with one another, your total flow rate will drop and your total pressure drop will be greater. The pressure drop at each restriction will be the identical, though lower than the pressure drop when only one restriction existed.
Rather than "orders of magnitude higher" at the first one, the pressure drop at each will be the same because each sees the same flow rate.
Personally I commend your previous post stating that you would take this outside the forum. It's entirely unrelated to the original topic and benefits no one to continue an argument such as this within a thread. I realize it isn't easy maintaining one's composure when you've been insulted, but jawing about it here will not improve the situation.