Cooling tower — Cooling tower — 1621 kW rejected, water 35.0 to 29.4 °C at a 25.6 °C wet bulb, 37.8 m³/s of air.
A Baltimore Aircoil listing, from the manufacturer's published data.
Units: SI · US customary
| Rated water | 35.0 to 29.4 °C |
| Rated entering wet bulb | 25.6 °C |
| Water flow at the rating | 69.71 kg/s |
| Air flow at the rating | 37.83 m³/s |
| Heat rejected at the rating | 1621 kW |
| Fan motor (nameplate) | 37.28 kW |
| Type | open — the loop water over the fill |
| Cabinet | 4445 mm x 4445 mm |
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| Cooling-tower model against a third maker's whole open-tower range, one fill exponent per range | 19 281 over 438 machines | RMS 0.11 K (FXT, Series 1500), 0.13 K (PT2), 0.15 K (Series 3000), 0.20 K (Series V); every mean within ±0.09 K, worst 0.95 K. One constant per range was chosen on these tables: how the fill's transfer moves with water loading (−0.9 to −1.3, against −0.7 on EVAPCO's table), chosen on half of each range's models and confirmed on the other; the counterflow ranges are read through Merkel's balance integrated and the two crossflow ranges marched as crossflow. On the old single-chord model and one shared exponent the same tables read 0.31–0.48 K, with a trend of +0.5 K at a 50 °F wet bulb to −0.5 K at 90 °F on every range; what is left of it is up to 0.17 K cold at 85–90 °F |
| Closed-circuit cooler (an evaporative wet coil whose spray film varies along the coil), two coil constants per range | 18 831 over 392 machines | RMS 0.10 K (FXV), 0.09 K (PFi), 0.10 K (Series V closed circuit). Two constants per coil design were chosen on these tables — the split between the fluid-side and air-side conductances (2, 1, 4) and how the fluid side moves with the fluid's flow (−0.8, −0.8, −0.6) — each the same on either half of the range's models. The second has an independent reading: the fluid side is the tube film in series with the spray film outside the tube, and a tube-side calculation from each coil's printed volume and pressure drop, using nothing from these tables, puts it at −0.5 to −0.8 whatever the unpublished tube bore. On the earlier constants (3 and −0.2, the tube film alone) the same tables read 0.17–0.32 K, and 0.2–0.5 K cold at the high wet bulbs. On the points a uniform film also reaches, the gradient reads 0.09–0.10 K against the uniform film's 0.15–0.19 K at the same constants; under the earlier constants the two read within 0.01 K |
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Listed from published data; a listing's figures are the manufacturer's, the model that runs them is ours. Solver results never depend on who has claimed what.