Why Correct Ozone Generator Sizing Matters

Choosing the right size ozone generator is critical for effective treatment. An undersized unit will fail to achieve the desired ozone concentration, while an oversized unit wastes energy and money. This guide teaches you how to calculate the correct ozone generator size for any application.

The Basic Ozone Sizing Formula

The fundamental formula for ozone dosing is:

Ozone Dose (g/h) = Target Concentration (g/m³) × Air/Oxygen Flow Rate (m³/h)

For water treatment, the formula adjusts to account for dissolved ozone requirements:

Ozone Dose (g/h) = Target O₃ Concentration (mg/L) × Flow Rate (L/h) ÷ 1000

Step-by-Step Sizing Calculation

Step 1: Calculate Room/Volume

Measure the length, width, and height of the space to be treated. Volume (m³) = L × W × H

Step 2: Determine Target Ozone Concentration

Different applications require different ozone concentrations:

• Air purification (residential): 0.02-0.05 g/m³

• Commercial air treatment: 0.05-0.1 g/m³

• Industrial air deodorization: 0.1-0.5 g/m³

• Water treatment (drinking): 1-5 g/m³

• Industrial wastewater: 5-20 g/m³

Step 3: Calculate Required Ozone Output

Required (g/h) = Target Concentration × Volume

Example: 100m³ room at 0.05g/m³ = 5g/h minimum output required

Common Sizing Mistakes to Avoid

Ignoring Air Changes: Spaces with high air exchange rates (ventilated rooms) require higher ozone output to compensate for ozone loss.

Not Accounting for Temperature: Ozone solubility decreases as temperature increases. Hot water requires more ozone than cold water.

Forgetting Contact Time: Larger contact tanks allow for lower ozone doses. Plan adequate contact time (2-10 minutes for air, 1-5 minutes for water).

Quick Reference Sizing Chart

Conclusion

Proper ozone generator sizing ensures effective treatment while optimizing cost. Always oversize slightly (20-30%) to account for real-world efficiency losses. Contact TongLin Technology for free sizing consultation and customized ozone solutions.