1. What is a Hydraulic Hose Size Calculator?

Definition: This calculator estimates the optimal hydraulic hose diameter based on fluid flow parameters to minimize pressure drop.

Purpose: It helps engineers and technicians select properly sized hydraulic hoses for efficient system operation.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( D \) — Hose diameter (meters)
• \( Q \) — Flow rate (cubic meters per second)
• \( \mu \) — Dynamic viscosity (Pascal-seconds)
• \( L \) — Hose length (meters)
• \( \Delta P \) — Pressure drop (Pascals)

Explanation: The formula calculates the minimum hose diameter needed to achieve the specified pressure drop for given flow conditions.

3. Importance of Proper Hose Sizing

Details: Correct hose sizing ensures efficient fluid flow, minimizes energy losses, prevents excessive pressure drops, and maintains system performance.

4. Using the Calculator

Tips: Enter the flow rate, fluid viscosity (default 0.001 Pa·s for water), hose length, and desired pressure drop (default 100,000 Pa). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical pressure drop for hydraulic systems?
A: Most systems aim for 100,000-300,000 Pa (1-3 bar) pressure drop across the hose length.

Q2: How do I find fluid viscosity?
A: Check fluid specifications - water at 20°C is 0.001 Pa·s, hydraulic oils typically range 0.01-0.1 Pa·s.

Q3: Does this account for fittings and bends?
A: No, this calculates straight hose only. Add 10-20% to diameter for systems with multiple fittings.

Q4: What if my flow rate is in L/min?
A: Convert to m³/s by dividing by 60,000 (1 L/min = 1/60,000 m³/s).

Q5: How do I convert to inches?
A: Multiply meters by 39.37 to get inches (1 m = 39.37 in).