Evapco Closed Loop Cooling Tower

What Is An Evapco Closed Loop Cooling Tower

An EVAPCO closed loop cooling tower is a closed-circuit evaporative cooling system designed to cool process fluids (such as water, glycol, or oil) while preventing contamination and minimizing scaling. It combines the efficiency of evaporative cooling with the protection of a sealed fluid circuit.

Evapco Closed Loop Cooling Tower Working Principle

1. Process fluid (e.g., water or glycol) circulates in a closed coil.

2. Spray water is distributed over the coil and evaporates, removing heat from the process fluid inside.

3. Ambient air is drawn through the tower (induced or forced draft), enhancing evaporation.

4. The cooled fluid returns to the process system, while warm moist air is discharged.

5. Spray water is recirculated via a pump, and makeup water compensates for evaporative loss.

Evapco Closed Loop Cooling Tower Main Components

Heat Exchange Coil (usually galvanized steel or stainless steel)

Water Distribution System (spray nozzles, piping)

Fill Media (sometimes included to enhance heat transfer)

Fan System (induced draft or forced draft)

Water Basin (collects recirculated water)

Pump (recirculates spray water)

Drift Eliminators (reduce water loss through air discharge)

Access Doors and Panels (for maintenance)

Types of EVAPCO Closed Circuit Towers

1. Induced Draft Models (e.g., **eco-ATW**, **ATWB**, **ATC**)

Fan on top draws air upward.

More efficient and quieter.

2. Forced Draft Models (e.g., **PMCQ**, **PMCF**)

Fan on the side blows air through.

Compact footprint.

Evapco Closed Loop Cooling Tower Advantages

Clean Process Fluid: No contamination by air or water impurities.

Low Maintenance: Reduced scaling and fouling in the system.

Energy Efficient: Uses evaporative cooling for high heat rejection.

Year-Round Operation: Coil protects against freezing and corrosion.

Compact Design: Ideal for space-limited installations.

Evapco Closed Loop Cooling Tower Applications

HVAC cooling loops

Industrial process cooling

Data centers

Power plants

Manufacturing facilities

Here is a labeled diagram of an EVAPCO closed loop cooling tower (e.g. ATWB model)