Introduction

Principle of Evaporative Cooling

How it Cool?

  1. The water pump circulates water to keep the cooling pad wet.
  2. The fan continuously draw the outside air into the air cooler.
  3. A large amount of water evaporation occurs at the cooling pad.
  4. The air inside the air cooler becomes cooler.
  5. The same fan deliver the cooled fresh air to the workspace.

Performance of Evaporative Cooling

1. Ducted Series Air Cooler Installation Method.
2. Cool Fresh Air will be draw from outside to indoor. It contains more Oxygen, Less Smell, and More Cooling.

Ambient Humidty and Temperature effect on the Temperature Drop

Intake air Relative Humidity(%)

Intake air C / Exit 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 - - - - - -

Electrical and Water Consumption

Electricity Consumption a Day in Malaysia

Mode KC3 / KCS
kW 1.1
kW/h Consumption per 9 Hour a Day 9.9
Electricity Cost per kW/h RM0.37
Electricity Cost per 9 Hour a Day RM3.66
   
*Based on TNB TARIFF E2 - MEDIUM VOLTAGE PEAK/OFF-PEAK INDUSTRIAL TARIFF

Water Consumption a Day in Malaysia

Mode KC3 / KCS
Consumption on 9 Hour Evaporation 200 litres
Consumption on Drainage 50 litres
Total Consumtion a Day 250 litres
Water Usage Cost per M3 RM2.28
Water Usage Cost per 9 Hour a Day RM0.57
*Based on SYABAS maximum rate @ RM2.28 per m3

Electricity Cost Comparison for 100m2 Area with Ceiling height @ 4m

Evaporative Air Cooler

  • Type of System

  • Capacity
  • Kw
  • Air Change per hour
  • Reduce temperature Effect
  • Air Ventilation Effect
  • Air Flow Effect
  • Open Air Operation
  • Dust-Proof Effect
  • Reduce Peculiar Smell
  • Avoid Dry
  • Electrical Units Consumed per hour
  • Electrical Cost per hour*
  • Electrical Cost per day (12 hours)
  • Electrical Cost per month (30 Days)
  • Electrical Cost year
  • Electrical Cost Comparison with reference to Air Conditioned System
  • Saving per Month (if using air cooler)
  • Saving per Year (if using air cooler)

Evaporative Air Cooler

  • 1 X Air Cooler(1.1Kw)

  • 20,000m3/h
  • 1.1Kw
  • 45
  • 1.1
  • RM0.56
  • RM6.72
  • RM201.56
  • RM2,418.77
  • 10.58%

  • -
  • -

Air Consitioned

  • 8 X 1.5HP Air Cond(1.3kw)

  • Approx. 120,000BTU/h(12HP)
  • 10.4Kw
  • -
  • -
  • -
  • -
  • -
  • 10.4
  • RM5.29
  • RM63.52
  • RM1,905.70
  • RM22,868.35
  • 100.00%

  • RM7,70413
  • RM20,449.58

Fan & Exhaust Fan

  • 10 X Fan(0.1Kw)+2 X Exhaust Fan (0.5Kw)
  • -
  • 2Kw
  • -
  • -
  • 2.0
  • RM1.02
  • RM12.22
  • RM366.48
  • RM4,397.48
  • 19.23%

  • RM164.92
  • RM1,978.99
*Based on TNB Tariff B - Low Voltage Commercial Tariff @ RM0.509 per Kw/h