Question 1

How is water flow rate calculated?

Accepted Answer

Q = v × A, where v is velocity (m/s) and A is pipe cross-section area. Pressure drop increases with flow.

Question 2

What is typical home water flow?

Accepted Answer

Main supply: 15-20 GPM (57-76 LPM). Shower: 2 GPM. Faucet: 1-2 GPM. Washing machine: 3-5 GPM.

Question 3

How does pipe diameter affect flow rate?

Accepted Answer

Flow rate is proportional to the square of diameter. Doubling pipe diameter quadruples potential flow rate at the same pressure.

Question 4

What's the difference between volume and mass flow rate?

Accepted Answer

Volume flow (gallons/min) ignores fluid density. Mass flow (kg/s) accounts for density, important when density changes with temperature or pressure.

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