Cooling Effect
Comparison
evaporative air cooler is not an air conditioner, as it does not use a compressor and Freon gas. We could not expect an Evaporative Cooler works as effectively as refrigerated air conditioner. However, compared with air conditioner the advantages of the Evaporative Air Cooler are:
- Low purchasing cost
- Low power consumption
- Low installation cost
- Green, energy-saving, eco-friendly
- Windows and doors can be kept open
- Multifunctional: Air cooling, ventilation, humidification, purifier
- Widely used in indoor and outdoor applications
Comparison with other cooling & ventilation devices
| TYPE | EVAPORATIVE COOLER | REFRIGERATIVE AIR CON | CENTRIFUGAL FAN | CEILING FAN |
|---|---|---|---|---|
| CAPACITY | 18000cmh | 400,000 BTU/HOUR | 40,000 cmh | 1400mm. Dia |
| POWER(kw) | 1.1 | 54 | 7.5 | 0.075 |
| COVER AREA (Sqm) | 1000 | 1000 | 1000 | 1000 |
| AIR CHANGE PER HOUR | 30 | 0 | 30 | 0 |
| UNITS REQUIRED | 8 | 2 | 3 | 83 |
| TOTAL KW | 8.8kw | 108.0kw | 22.5kw | 6.2kw |
| ELECTRICITY COST PER YEAR (10 HRS, 365 DAYS) | 32,120 kwh | 394,200 kwh | 82,125 kwh | 22,721 kwh |
| COST WITH REFERENCE TO REFRIGERATIVE AIR CON | 8.15% | 100% | 20.83% | 5.76% |
Comparison with Air Conditioner
| TYPE | EVAPORATIVE COOLER | AIR CONDITIONER |
|---|---|---|
| CAPACITY | 3000cmh window cooler | 24000 BTU split type |
| POWER (Kw) | 0.185 kw | 1 kw |
| COVER AREA (Sqm) | 15-30 sqm | 15-20 sqm |
| AIR CHANGE PER HOUR | 30 | 0 |
| UNITS REQUIRED | 1 | 1 |
| ELECTRICITY COST PER YEAR (10 HRS, 365 DAYS) | 675 kwh | 3,650 kwh |
| COST WHEN ELECTRICITY PRICE $0.1/kwh | USD 67.5 | USD 365 |
Temperature reduce
| INTAKE AIR RELATIVE HUMIDITY (%) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| EXIT °C / INTAKE AIR °C | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 |
| 10 | 3.2 | 4.0 | 4.8 | 5.6 | 6.4 | 7.2 | 8.0 | 8.6 | 9.4 |
| 15 | 6.6 | 7.8 | 8.8 | 9.8 | 10.8 | 11.7 | 12.6 | 13.4 | 14.3 |
| 20 | 10.1 | 11.4 | 12.8 | 13.9 | 15.2 | 16.2 | 17.2 | 18.2 | 19.2 |
| 25 | 13.4 | 15.0 | 16.6 | 18.0 | 19.4 | 20.6 | 21.8 | 22.9 | 24.0 |
| 30 | 16.6 | 18.6 | 20.4 | 22.0 | 23.6 | 25.0 | 26.4 | 27.7 | 28.9 |
| 35 | 19.8 | 22.2 | 24.2 | 26.2 | 28.0 | 29.6 | 31.0 | 32.4 | 33.7 |
| 40 | 23.0 | 25.6 | 28.1 | 30.4 | 32.3 | 33.9 | – | – | – |
| 45 | 25.9 | 29.2 | 32.0 | 34.3 | – | – | – | – | – |
| 50 | 29 | 32.7 | 35.8 | – | – | – | – | – | – |