Introduction
The main advantage with these two equipment is that they afford comfort. The air conditioner is used most places, but is more expensive to own and run. It cools the air and dehumidifies the air. In coastal cities this makes sense as the discomfort is both due to the high temperatures as well as the humidity. The air cooler on the other hand cools the air by the evaporation of water. The outside air is drawn through this unit onto a pad which has water running. The water evaporates and cools the air, taking the heat to evaporate from the air.
The former recycles the air from the room. The latter constantly draws fresh air from outside. The advantage for the air cooler is that there is constantly outside air being drawn across into the room. The air conditioner on the other hand has a high amount of re-cycled air being cooled. The temperature reduction by an air conditioner is higher whereas for the air cooler this temperature reduction is dependent on the humidity of the place you are cooling. A humid city would have lesser cooling as compared to a dry city. The cities on the coast are normally a lot more humid compared to cities in the interior. An air cooler would be better for comfort applications as compared to an air conditioner at Delhi(interior city) as it a lot drier. Whereas at Chennai (coastal city) an air cooler would not be as effective. From a health perspective it is always better to have more fresh air. For air conditioning in offices we require at least 5 cfm(cubic feet per minute) of fresh air per person in an office environment. This fresh air is required to offset the carbon-di-oxide which is being constantly produced to the occupants breathing. For an air cooler it is all fresh air being used.
Besides the air conditioner guzzles a large amount of power (1.4 kW/ton) whereas an air cooler has basically a motor which is of a very nominal wattage. For example a 1.5-ton AC would consume about 2.1 units in an hour, whereas an air cooler would consume just 0.2-0.3 units in an hour.(1 unit is kW-hr the unit measure by our electricity board meter.)
To sum up the air conditioner has a better cooling available whereas an air cooler has better fresh air available. An air cooler makes more sense at interior cities where as an air conditioner would be better in the coastal cities. Lastly the power consumed is much lower for the air cooler as compared to an air conditioner.
ADVANTAGE:
AC
According to the requirements of an individual there are different types of air conditioners, as window mounted, portable and split air conditioners they can be purchased .
The installation, repair and replacement of window mounted AC is also very easy.
Split air conditioners can be mounted easily on walls and are ideal for those residing in the apartments.
Poratable air conditioners can be easily shifted from one place to another and these are also called as mobile air conditioners.
The most beneficial thing from the air conditioner is that keeps you away from health issues.
Unlike the air coolers that are noisy, the air conditioners are quieter while operation.
DISADVANTAGE:
Split air conditioners are a bit expensive as compared to the air coolers.
The excessive energy consumption is another drawback of using window and split air conditioners.
While operation, the air conditioners release greenhouse gases that pollute the atmosphere.
AIR-COOLERS:
ADVANTAGES:
The most important benefit of using air coolers is that they are relatively cost effective.
They are suitable for individual cooling in the summers unlike the ACs which cool the whole room.
They are also of several types based on their ability of cooling and also easy to install.
Air coolers consumes less power, which can reduce your electricity expenses.
DISADVANTAGE:
The climatic conditions also effect the cooling capacity of air coolers.
You need to supply water continuously to the evaporator air coolers .
These may effect the health of people suffering from asthma and other respiratory problem
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