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Water Pressure Equation:
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The water pressure calculation from an overhead tank uses the fundamental hydrostatic pressure formula to determine the pressure exerted by a column of water at a specific height. This is essential for designing water supply systems and ensuring adequate pressure for various applications.
The calculator uses the hydrostatic pressure equation:
Where:
Explanation: The equation calculates the pressure exerted by a fluid at rest due to the force of gravity. The pressure increases linearly with depth and depends on the fluid's density.
Details: Accurate water pressure calculation is crucial for designing efficient water supply systems, determining pump requirements, ensuring adequate pressure for appliances, and preventing pipe damage from excessive pressure.
Tips: Enter water density in kg/m³ (typically 1000 for pure water), gravity in m/s² (typically 9.81), and height in meters. All values must be positive numbers.
Q1: What is the typical density value for water?
A: Pure water at 4°C has a density of 1000 kg/m³. This value decreases slightly with increasing temperature.
Q2: How does water pressure change with height?
A: Water pressure increases linearly with height (depth). For every meter of height, pressure increases by approximately 9810 Pa (using ρ=1000 kg/m³ and g=9.81 m/s²).
Q3: Why is gravity important in this calculation?
A: Gravity provides the force that creates the pressure. The weight of the water column above a point creates the hydrostatic pressure at that point.
Q4: Can this formula be used for other fluids?
A: Yes, the formula works for any fluid. You would need to use the appropriate density value for the specific fluid you're calculating pressure for.
Q5: How does this relate to water supply system design?
A: Engineers use this calculation to determine the necessary height of water towers or overhead tanks to provide adequate pressure throughout a distribution system without requiring additional pumps.