do vacuums lose suction power the longer the hose is? How does that work?
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Friction loss is a big factor in the distance you can move air or liquid and the speed and pressure at which that substance can move.
Another factor is the piping itself. If you are using conventional corrugated plastic tubing that comes with a shop-vac, it flexes and expands (or in this case contracts) slightly. That eats into the energy of moving your air. This is why car wash places with a central vacuum have hard piping out to the parking spots and then flexible hose for the last 10’ or so. Also on a pressurized scenario in auto shops why they have hard metal pipes for the air tools to each bay and the. 25’ or 50’ reels of rubber hose. All that length of hose expanding would reduce the pressure at the end.
Friction loss is a function of diameter and pressure. You can reduce FL by increasing diameter or reducing pressure. Increasing diameter reduces velocity… picture 100 cars going down a single lane road versus a 5 lane highway.
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