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Frequently Asked Questions
Where does the heat go?
Into a condenser water circuit.
That circuit carries it to a tower or fluid cooler.
The heat leaves the building there, not at the chiller.
The chiller itself can sit indoors.
It never sees the weather.
Why is it more efficient?
The condenser works against a wet-bulb temperature.
Evaporation cools the water below air temperature.
Condensing temperature is therefore lower.
Lower condensing means less compressor power.
The gain applies every hour the plant runs.
When is that advantage largest?
On the hottest days.
Dry air temperature rises further than wet-bulb.
An air-cooled machine fights the higher figure.
The margin between them widens.
That is when the building most needs capacity.
Why do these machines last so long?
Because they are not weathering.
A plant room is a benign environment.
Corrosion is far slower than outdoors.
Components are accessible for proper maintenance.
Service lives of several decades are normal.
What does the building take on permanently?
A complete heat rejection system.
A cooling tower or fluid cooler.
Condenser pumps and the pipework between them.
A water treatment and testing regime.
All of it lasts as long as the plant does.
Should the chiller be evaluated on its own?
No, because it does not function on its own.
The heat rejection plant is part of the system.
Capital, energy and maintenance all belong together.
Comparing a bare chiller price misstates both.
Size and commission the two as one.
What space does the arrangement need?
A plant room for the machine itself.
A position outdoors for heat rejection.
Pipework routes between the two.
Access for tube cleaning and eventual overhaul.
Tube pull space is often forgotten at design.