1. What is Flow Rate of Hose?

Definition: This calculator estimates the flow rate of water through a hose based on velocity and cross-sectional area.

Purpose: It helps engineers, plumbers, and irrigation specialists determine the gallons per minute (GPM) flowing through a hose or pipe.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q \) — Flow rate (gallons per minute, GPM)
• \( V \) — Velocity of water (feet per second, ft/s)
• \( A \) — Cross-sectional area of hose (square feet, ft²)
• 448.83 — Conversion factor (cubic feet per second to GPM)

Explanation: The velocity multiplied by area gives flow in cubic feet per second, which is then converted to gallons per minute.

3. Importance of Flow Rate Calculation

Details: Proper flow rate estimation ensures adequate water supply, proper system design, and efficient operation of irrigation or plumbing systems.

4. Using the Calculator

Tips: Enter the water velocity in ft/s and the hose's cross-sectional area in ft². All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: How do I find the cross-sectional area?
A: For circular hoses, use \( A = \pi \times r^2 \) where r is the radius in feet.

Q2: What's a typical water velocity in hoses?
A: Residential systems typically have velocities between 5-10 ft/s, while industrial systems may go higher.

Q3: Why the 448.83 conversion factor?
A: It converts cubic feet per second to gallons per minute (1 ft³/s = 448.83 GPM).

Q4: Does this work for pipes as well as hoses?
A: Yes, the formula applies to any conduit carrying water, regardless of material.

Q5: How does hose diameter affect flow rate?
A: Flow rate increases with the square of the diameter - doubling diameter quadruples flow rate at the same velocity.