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Evaporative Air Conditioners Perth
Evaporative conditioning differs from the typical air conditioning systems such as reverse cycle refrigerated air conditioning. Evaporative air conditioners are based on the principle of evaporation – heat in the hot air from outside the home being absorbed by water evaporation making the air cool to be pushed in to the home.
The main components of evaporative air conditioners are cooling pads, water tank, pump, propeller (fan) and thermostat.
How it works
Hot and dry outside air is pumped through water-soaked cooling pads. As the air blows through the cooling pads, the water in the pads evaporates and the heat in the air is absorbed cooling the air flowing through. A motor driven fan then pushes the cool air through a ducting system in to your home.
This system is an open system, this means, the cooled air delivered to the room and then pushed out to the environment via an open window or door. It is not recirculated. Thus, a door or window must be left open for this air to escape, providing the area you are cooling with a fresh change in air quite frequently.
The evaporative air cooling and conditioners are best suited for dry climates. It also has an added benefit of conditioning the air with more moisture for the comfort of building occupants.
Why Evaporative AC is popular in Perth:
In arid and dry climatic conditions, evaporative cooling can reduce energy consumption and total equipment for conditioning as an alternative to compressor-based cooling.
In non-arid and humid climates, indirect evaporative cooling can be done, which will advantageous as the evaporative cooling process would take place without increasing humidity.
Evaporative is cheaper to install than reverse cycle air conditioners. However, air conditioning hasnt changed much in price compared to the initial amount for a house has. This has made reverse cycle a more viable option for people in recent years with a tight budget.
Such passive evaporative cooling strategies offer benefits that are similar as that to the conventional mechanical evaporative cooling systems.
Since Australia sees both, dry and warm as well as humid and warm seasons, this type of conditioners are best suited for the region.
Some advantages of evaporative air conditioning are:
- It is reasonably inexpensive to run as electricity is consumed only by the fan and a small water pump.
- It’s set-up cost is low as it does not need any complex equipment to work
- Not only is its air con install and set-up simple, but it is also compact. Thus, you won’t have to worry about large space requirements.
- Constant supply of fresh cool moist air.
- Filter and trap dust and pollen.
Some of its disadvantages are:
- Not as efficient in extremely humid climates and during rainy periods.
- Since it is evaporation based, it has a limited temperature control.
- Water usage. It can use up to 25 liters of water an hour, depending on the fan speed and humidity.