1. What is a Cost of Compressed Air Calculator?

Definition: This calculator estimates the cost of producing compressed air based on compressor power, operating time, electricity price, and system efficiency.

Purpose: It helps industrial facilities and maintenance professionals understand and optimize their compressed air system operating costs.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( C \) — Cost of compressed air ($)
• \( HP \) — Compressor horsepower (HP)
• \( t \) — Operating time (hours)
• \( P_{kwh} \) — Electricity price ($/kWh)
• \( \eta \) — System efficiency (0-1)

Explanation: The formula converts horsepower to kW (0.746 factor), calculates energy consumption, applies electricity cost, and accounts for system efficiency.

3. Importance of Compressed Air Cost Calculation

Details: Compressed air is often one of the most expensive utilities in industrial settings. Accurate cost calculation helps identify savings opportunities.

4. Using the Calculator

Tips: Enter compressor power in HP, operating time in hours, electricity price (default $0.12/kWh), and system efficiency (default 0.85). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is there a 0.746 factor in the formula?
A: This converts horsepower to kilowatts (1 HP = 0.746 kW).

Q2: What's a typical system efficiency value?
A: Most systems range from 0.7-0.9, with 0.85 being a common default value.

Q3: Does this include maintenance costs?
A: No, this calculates only energy costs. Maintenance would be additional.

Q4: How can I reduce compressed air costs?
A: Improve system efficiency, fix leaks, reduce pressure when possible, and use variable speed drives.

Q5: Should I include compressor duty cycle?
A: For more accuracy, multiply operating time by duty cycle percentage.