Siphon intake length vs flow rate

[wickette]

Does the depth of a siphon's intake tube effect flow.

ie if a 3/4" intake is drawing from 5" bellow the water line will flow faster or slower than drawing 20" bellow the water line?

(Everything not submerged kept the same length/position)

 

[KStatefan]

Not really but the increase in pipe length will add some friction loss.

 

[ForTheLoveOfCoral21]

The depth of a siphon's intake tube can indeed affect the flow rate. Generally, a siphon with a shorter intake tube (e.g., 5" below the water line) will exhibit a faster flow rate compared to a siphon with a longer intake tube (e.g., 20" below the water line), assuming all other factors remain constant (e.g., pipe diameter, water pressure).

The flow rate of a siphon is influenced by the height difference between the water source and the exit point, known as the "head." A greater head (larger height difference) results in a higher flow rate. When the intake tube is positioned closer to the water surface (5" below), the head is lower, allowing for a faster flow. Conversely, when the intake tube is positioned deeper (20" below), the head increases, resulting in a slower flow.

It's important to note that other factors such as pipe diameter, water viscosity, and any obstructions in the siphon can also affect the flow rate to some extent.

 

[wickette]

The depth of a siphon's intake tube can indeed affect the flow rate. Generally, a siphon with a shorter intake tube (e.g., 5" below the water line) will exhibit a faster flow rate compared to a siphon with a longer intake tube (e.g., 20" below the water line), assuming all other factors remain constant (e.g., pipe diameter, water pressure).

The flow rate of a siphon is influenced by the height difference between the water source and the exit point, known as the "head." A greater head (larger height difference) results in a higher flow rate. When the intake tube is positioned closer to the water surface (5" below), the head is lower, allowing for a faster flow. Conversely, when the intake tube is positioned deeper (20" below), the head increases, resulting in a slower flow.

This is only 3/4" pipe. 6" &up height difference between intake/output should give over 95% maximum flow rate.

But it doesn't so you're still right, probably more from friction loss than head pressure. Flow was between 50% -75%. Withthe filter intake 2' under the tank