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Frequently Asked Questions
How does a fluid cooler differ from a cooling tower?
The process fluid never meets the air.
It circulates inside a sealed coil.
Separate spray water wets the outside of that coil.
Evaporation still does the cooling.
Only the spray water is exposed.
What does keeping the loop sealed buy?
Downstream equipment never sees open water.
Fouling and corrosion inside it stop being a concern.
The loop can be charged with glycol.
It can then run through freezing weather.
Contamination-sensitive equipment can be served.
What does the sealed coil cost?
An extra heat transfer step.
Heat now crosses a tube wall.
That step needs its own temperature difference.
The machine is larger and heavier for the same duty.
It is dearer to buy as well.
When does that size difference actually matter?
Where roof loading or plant space is tight.
The footprint and weight are both greater.
Structural provision has to allow for it.
Crane access for installation may be affected.
It is a constraint, not just a cost line.
What does running dry mean?
The spray pumps stop in cool weather.
The coil rejects heat to air alone.
No water is consumed during those hours.
Treatment chemistry pauses with it.
The freezing risk of a wetted machine falls away.
How much of the year can dry operation cover?
In a temperate climate, a substantial share.
It depends on the required fluid temperature.
A higher setpoint extends the dry hours.
Ambient conditions decide the rest.
The saving in water can be significant.
Does the spray water still need treatment?
Yes, because it is open to the air.
It collects dust and concentrates as it evaporates.
Scale on the coil directly reduces capacity.
Biological control applies to it as well.
The protected loop is the one that stays clean.