About The Cooling Tower Approach Range Calculator

The Cooling Tower Approach Range Calculator checks cooling tower operating performance from hot water inlet temperature, cold water outlet temperature, wet-bulb temperature, and circulating flow. It reports range, approach, effectiveness, and estimated heat rejection.

How to Use the Cooling Tower Approach Range Calculator Online

1. Enter hot water inlet, cold water outlet, and entering wet-bulb temperatures.
2. Enter circulating water flow in m^3/h.
3. Calculate range, approach, effectiveness, and heat rejection.
4. Use the result to compare tower performance against design expectations.

Choosing Options Correctly

The temperature relationship must be hot inlet greater than cold outlet, and cold outlet greater than wet-bulb. Use operating or design temperatures from the same condition.

Common Use Cases

• Check cooling tower approach and range from measured readings.
• Estimate heat rejection from water flow and temperature drop.
• Screen whether tower performance looks reasonable.

Quick FAQ

What does approach mean?
Approach is the difference between leaving water temperature and entering wet-bulb temperature.

What does range mean?
Range is the difference between entering and leaving condenser water temperatures.

Does this account for fan speed or fill condition?
No. It summarizes temperatures; actual performance depends on tower design, airflow, fill, water flow, and weather.

Why is wet-bulb important?
Cooling towers reject heat toward wet-bulb temperature, not dry-bulb temperature.