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InstalledCase study

150-ton industrial cooling tower

Evaporative cooling towers for industrial process loops. Our 150-ton, 350 GPM reference unit was developed by ValensAir and is installed and in service at a pharmaceutical plant.

Project facts

Equipment
Industrial cooling tower
Cooling capacity
150 tons (cooling tower tonnage)
Circulating flow
350 US GPM (≈ 79.5 m³/h)
Heat rejection
2.25 million Btu/h (≈ 659 kW)
Design water temperatures
42 °C in, 34.9 °C out
Design ambient wet-bulb
28.9 °C
Application
Industrial process cooling
Status
Installed and in service
Industry
Pharmaceutical

The requirement

The plant needed reliable rejection of process heat: 350 GPM of process water returning at 42 °C, to be cooled to 34.9 °C and sent back to the process.

The solution

ValensAir developed and built a 150-ton cooling tower for the duty and installed it at the pharmaceutical plant. The tower is in service, providing process cooling.

How it works

A cooling tower rejects process heat to the atmosphere. Warm water from condensers, heat exchangers or process equipment is spread over fill media while a fan draws ambient air through it. A small fraction of the water evaporates, carrying heat away, and the cooled water collects in the basin and returns to the process.

Counterflow cooling tower, operating principle Hot water from the process is sprayed over fill media. A fan draws ambient air in through louvers at the base and up through the fill against the falling water. Heat leaves with the warm, saturated air through the fan stack, and cooled water returns from the basin to the process. Process heat load Hot water 42 °C from process Cold water 34.9 °C to process Air inlet louvers Cold water basin Fill media Water distribution Drift eliminators Fan and stack

Explore the tower

Select a component to see what it does. Drag the slider to separate the tower into its main assemblies.

  • Hot water from process
  • Cooled water
  • Ambient air in
  • Warm, saturated air out
Illustration shows a counterflow, induced-draft arrangement to explain the principle.

Design conditions

The thermal duty the tower was designed for.

Capacity
150 tonsCooling tower tonnage
Circulating flow
350 GPM≈ 79.5 m³/h
Hot water in
42 °CFrom the process
Cold water out
34.9 °CBack to the process
Cooling range
7.1 °C12.9 °F
Heat rejection
659 kW2.25 million Btu/h
Design wet-bulb
28.9 °CKarachi design condition
Approach
6.0 °CCold water minus wet-bulb
Evaporation loss
≈ 3.8 GPM≈ 0.87 m³/h

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