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Flow Rate Equation:
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The water hose flow rate equation calculates the volumetric flow rate of water through a hose or pipe. It's based on the fundamental principle that flow rate equals cross-sectional area multiplied by flow velocity.
The calculator uses the flow rate equation:
Where:
Explanation: This equation represents the volume of water passing through a given point per unit time, which is essential for designing irrigation systems, plumbing, and hydraulic applications.
Details: Accurate flow rate calculation is crucial for proper system design, ensuring adequate water supply, preventing pressure drops, and optimizing water usage in various applications from household gardening to industrial processes.
Tips: Enter the cross-sectional area in square meters and flow velocity in meters per second. Both values must be positive numbers for accurate calculation.
Q1: How do I measure the cross-sectional area of a hose?
A: For circular hoses, use A = π × r² where r is the inner radius of the hose. Measure the inner diameter and divide by 2 to get the radius.
Q2: What is a typical flow velocity in water hoses?
A: Typical flow velocities range from 0.5-2.5 m/s for most residential applications. Higher velocities may cause excessive pressure loss and noise.
Q3: How does hose material affect flow rate?
A: Smooth interior surfaces (like PVC) allow higher flow rates than rough surfaces (like rubber) due to reduced friction losses.
Q4: Can I use this for other fluids besides water?
A: The basic equation Q = A × v applies to all fluids, but viscosity differences may affect actual flow rates in practice.
Q5: How do bends and fittings affect flow rate?
A: Bends, valves, and fittings create resistance that reduces flow rate. For accurate calculations, these pressure losses should be accounted for in system design.