1. What is Hydraulic Power?

Definition: Hydraulic power is the power transmitted by a hydraulic system, calculated based on flow rate, pressure, and system efficiency.

Purpose: This calculation helps engineers and technicians properly size hydraulic systems and components.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( HP \) — Hydraulic power (horsepower)
• \( Q \) — Flow rate (gallons per minute, GPM)
• \( P \) — Pressure (pounds per square inch, psi)
• \( \eta \) — Efficiency factor (unitless, typically 0.8-0.95)
• 1714 — Conversion factor (550 ft-lb/sec per HP × 12 in/ft × 60 sec/min / 231 in³/gal)

Explanation: The formula calculates the mechanical power equivalent of the hydraulic energy in the system, accounting for efficiency losses.

3. Importance of Hydraulic Power Calculation

Details: Proper power calculation ensures correct pump sizing, adequate power supply, and efficient system operation.

4. Using the Calculator

Tips: Enter the flow rate in GPM, pressure in psi, and efficiency factor (default 0.85). All values must be > 0, with efficiency between 0 and 1.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical efficiency factor for hydraulic systems?
A: Most systems operate at 80-90% efficiency (0.8-0.9). Newer systems may reach 95% (0.95).

Q2: Why is the conversion factor 1714?
A: It combines several unit conversions to transform (GPM × psi) into horsepower.

Q3: How do I measure flow rate and pressure?
A: Use flow meters for GPM and pressure gauges for psi at the pump outlet.

Q4: What if my system has multiple pumps?
A: Calculate each pump separately and sum the results for total system power.

Q5: Does this account for motor efficiency?
A: No, this is hydraulic power only. For electric motor sizing, divide by motor efficiency.