1. What is the Weight of Liquid Calculation?

The weight of liquid in pump calculation determines the mass equivalent force into the liquid entering/exiting the pump. It's a fundamental parameter in fluid mechanics and pump system analysis.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( W_l \) — Weight of liquid in pump (N)
• \( y \) — Specific weight of liquid (N/m³)
• \( Q \) — Actual discharge at centrifugal pump outlet (m³/s)

Explanation: The formula calculates the weight force of the liquid by multiplying the specific weight (weight per unit volume) by the volumetric flow rate.

3. Importance of Weight of Liquid Calculation

Details: Accurate calculation of liquid weight is crucial for pump system design, performance analysis, energy consumption estimation, and ensuring proper pump selection for specific applications.

4. Using the Calculator

Tips: Enter specific weight in N/m³ and actual discharge in m³/s. Both values must be positive numbers. For water at 4°C, specific weight is approximately 9800 N/m³.

5. Frequently Asked Questions (FAQ)

Q1: What is specific weight of a liquid?
A: Specific weight is the weight per unit volume of a liquid, also known as unit weight. It's measured in N/m³.

Q2: How does specific weight differ from density?
A: Density is mass per unit volume (kg/m³), while specific weight is weight per unit volume (N/m³). They are related by gravity: specific weight = density × gravity.

Q3: What is typical specific weight for water?
A: For water at 4°C on Earth, specific weight is approximately 9800 N/m³ or 9.8 kN/m³.

Q4: Why is weight of liquid important in pump systems?
A: It helps determine the energy required to move the liquid, pump sizing, and structural requirements for pump supports and piping.

Q5: Can this calculation be used for any liquid?
A: Yes, as long as you know the specific weight of the particular liquid being pumped.