• RDF-25B/35B/45B/60B are popular stainless steel structured models with centrifugal fan. Which need to be installed with air ducting system.
  • Fixed installation model is appropriate to be installed solid places such as outside wall, grounds, concrete or Zinc-steel structured roof.
BRAND: RDF Model No.: RDF-CENTRIFUGAL
Voltage/Hertz/Phase(V/HZ/P): 380~415V/50Hz/3P Airflow(m³/h): 25000~60000
Power(kw/HP): 3 Water Tank(L): 110~260
Air Outlet(mm): 620*570 Unit Size(mm): 1470*1470*1400

Cooling Principle

  • As schematically shown, when the cooler is working, water is pumped from the tank to the water distributor, and distributed evenly to the vaporative cooling pads, then go back to the tank. Meanwhile, the outside hot air is drawn through the?wetted cooling pads and filtered and reduced in temperature before delivering to the user space.

How does evaporative air cooler work?

  • Filtered and cooled by an evaporative air cooler, the outdoor fresh air is continuously sent into the indoor space through the air duct and air supply outlets. With the continuous supply of fresh air, the indoor space is in a positive pressure condition, thus the original hot air containing odor and dust will be emitted out of the room, resulting in a cool, ventilated, clean and comfortable environment. Suitable exhaust area and effective exhaust are essential for satisfactory performance of any evaporative air cooling system.

Relative Humidity

  • This zone is not applicable as in reality when the temperature is relatively high, RH is predominantly lower than the supply air temperature.With the wind-chill effect, the effective temperature for thermal human comfort is 1~2℃ lower than the Supply Air Temperature
Amb. Temp Relative Humidity
20% 30% 40% 50% 60% 70% 80% 90%
20 12 13 14.5 15.5 16.5 17.5 18.5 19.2
25 16 17 18.5 20 21 22 23 24
30 19.5 21 22.5 24 25 25 28 28.9
35 23 25 26.5 28.5 30 30 32.5 33.7
40 25.6 28.1 30.4 32.3 33.9
45 29.2 32 34.4
50 32.7 35.8

MODEL LIST

Model Discharge Type Max Airfolw (m³/h) Voltage Hertz Phase Power Consumption (kw) Evaporative Capacity (l/h) Noise (db) Water Tank (l) Air Outlet (mm) Unit Size (mm) Net Weight (kg)
RDF-25B Centrifugal 25000 380~415V/50Hz/3P 5.5 110 84 110 620*570 1470*1470*1400 360
RDF-35B Centrifugal 35000 380~415V/50Hz/3P 7.5 110 84 110 620*570 1470*1470*1400 360
RDF-45B Centrifugal 45000 380~415V/50Hz/3P 11 260 89 260 780*702 1770*1770*1440 585
RDF-60B Centrifugal 60000 380~415V/50Hz/3P 15.5 380 90 260 858*764 2090*1970*1700 650

PRODUCT ADVANTAGES

Cooling Equipment
Type comparison Evaporative Air Cooler comparison Air Conditioning comparison Ventilation Fan
Capacity 18000m³/h 400000 BTU/h 40000m³/h
kw 1.1 54 1.1
Workspace Area(㎡) 1000 1000 1000
Effective Height(m) 4 4 4
Air Change Per Hour 30 Recirculating 30
Electrical Energy Consumed Total Units Insalled 10 2 8
Total KW Insalled(kw) 11 108 8.8
Electrical Units Consumed @10hrs/days @26day/mth 34320 KW/YEAR 336960 KW/YEAR 27456 KW/YEAR
Cost Conparison With Reference to AC 10.1% 100% 8%
Effects Of Various Cooling Methods Pushes out hot, taste air and ventilates with Cool Clean & Fresh Air. Circulates air inside only It is ineffective in heat generating space Only moves ambient air but offers no relief as temperature rises.

Remark:Figures base on 1000㎡ wordspace area.