Gravity Fed Water Pressure Calculator

Water Pressure Formula:

\[ P = \rho \times g \times h \]

Water Pressure (Pascals):

1. What is a Gravity Fed Water Pressure Calculator?

Definition: This calculator determines the water pressure at a certain depth in a gravity-fed system using the hydrostatic pressure formula.

Purpose: It helps engineers, plumbers, and DIYers calculate water pressure for systems like water towers, plumbing, and irrigation.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ P = \rho \times g \times h \]

Where:

\( P \) — Water pressure (Pascals, Pa)
\( \rho \) — Density of water (kg/m³)
\( g \) — Gravitational acceleration (9.81 m/s²)
\( h \) — Height of water column (meters)

Explanation: The pressure increases linearly with depth due to the weight of the water above.

3. Importance of Water Pressure Calculation

Details: Proper pressure calculation ensures adequate water flow, proper pipe sizing, and system safety in plumbing and hydraulic systems.

4. Using the Calculator

Tips: Enter water density (default 1000 kg/m³ for pure water), height of water column, and gravity (default 9.81 m/s²). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's the typical water density?
A: Pure water at 4°C has a density of 1000 kg/m³. Saltwater is about 1025 kg/m³.

Q2: How does height affect pressure?
A: Pressure increases by about 9.81 kPa for every meter of water height (with ρ=1000 kg/m³).

Q3: When would I change the gravity value?
A: Only for extreme precision or calculations on other planets. Earth's gravity varies slightly by location.

Q4: How do I convert Pascals to other units?
A: 1 kPa = 1000 Pa, 1 bar ≈ 100 kPa, 1 psi ≈ 6895 Pa.

Q5: Does this account for atmospheric pressure?
A: No, this calculates only the hydrostatic pressure. Total pressure would add atmospheric pressure (101.325 kPa at sea level).