Author: Apex Engineering Sales | Last updated: July 15, 2026
Quick Answer
To select the right cooling tower, define the process heat load, water flow rate, hot and cold water temperatures, design wet-bulb temperature, site limits, material preference and maintenance requirements before comparing tower types.
Selection Inputs That Matter
| Item | Why it matters | Practical note |
|---|---|---|
| Heat load | Defines required cooling duty | kW, kcal/h or refrigeration tons |
| Water flow rate | Controls tower size and pump coordination | m³/h or GPM |
| Hot / cold water temperature | Defines cooling range | °C or °F |
| Design wet-bulb temperature | Defines realistic cold-water limit | Local climate data |
| Water quality and material | Affects corrosion resistance and maintenance | FRP, galvanized steel, stainless steel |
Step-by-Step Selection Process
- Confirm application and process duty.
- Collect flow and temperature data.
- Check local wet-bulb temperature and altitude.
- Choose open-circuit or closed-circuit design.
- Review footprint, noise and maintenance access.
- Send data for engineering review.
Engineering Review Note
Final cooling tower selection should be confirmed with complete project data, operating conditions and site requirements.
Common Selection Mistakes
- Selecting only by nominal tonnage.
- Ignoring local wet-bulb temperature.
- Using residential HVAC assumptions for industrial process cooling.
- Forgetting water treatment and maintenance access.
Related Apex Cooling Tower Pages
- Cooling Tower Products
- Open-Circuit Cooling Towers
- Closed-Circuit Cooling Towers
- Request a Quote
- Contact Us
FAQ
What information is required for cooling tower selection?
At minimum, provide water flow, hot water temperature, required cold water temperature, wet-bulb temperature, site altitude, power supply, water quality and material preference.
Is nominal tonnage enough to select a cooling tower?
No. Nominal tonnage is only a rough reference. Final selection should be based on heat load, water temperatures and local wet-bulb temperature.
Should I choose an open or closed-circuit cooling tower?
Open-circuit towers are often simpler and cost-effective. Closed-circuit towers help keep process fluid separated from ambient air and tower water. Final selection depends on process requirements.
Related Articles
Next step: If you already have project data, send your RFQ here and include flow, hot/cold water temperatures, design wet-bulb temperature, site altitude, power supply, noise target, water quality and material preference.