Daily water usage per 100kW load?

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Under a 100kW load running 24 hours: a closed-circuit cooling tower consumes roughly 4.0–4.5 tons of water per day, while a dry cooler supplemented with an evaporation pad consumes roughly 0.8–1.2 tons per day.

Closed-circuit tower: ~4.0–4.5 t/day
Dry cooler + evap pad: ~0.8–1.2 t/day
Figures at 100kW continuous load
Measured over 24h operation

Water consumption comparison (100kW load, 24h)

Heat rejection option	Approximate daily water use
Closed-circuit cooling tower	≈ 4.0 – 4.5 tons/day
Dry cooler + evaporation pad	≈ 0.8 – 1.2 tons/day

Why the two options differ so much

Containers with dry coolers and evaporation capability on an open site — Evaporative assist is what consumes water — the drier the route, the lower the use.

Evaporation is the water cost. Both figures are driven by how much water is evaporated to reject heat.
Dry coolers minimize water use because most heat leaves as sensible heat through the coil, not as vapor.
Water vs efficiency is a trade. The lower-water option must still hold inlet temperature at your wet-bulb — see the 38°C+ cooling FAQ.

Coolant hose loops and manifold inside a container — The loop that carries heat out to rejection.

Container with matching dry cooling tower — Dry tower route for low-water operation.

Short answer

Water consumption comparison (100kW load, 24h)

Why the two options differ so much

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