An air cooler works on the evaporative mechanism. When hot air from outside the room enter the water-saturated cooling pads, the liquid water is converted into its vapor state due to the thermal energy of the outdoor air. The energy required by the water to vaporize is taken from heat in the air called latent heat of evaporation. The evaporation rate is directly proportional to the temperature of the air and indirectly proportional to the humidity content of the air.
As the heat is sucked out of the air, the air is cooled and is then pushed into the room by the rotating fan. Depending on the fan speed, greater or lesser volume of air will be pushed inside the room. Depending on the swinging capability of the vents, the cooled air will either be restricted to a particular area of spread all over the room uniformly.
Air coolers that are fitted to the window are called the room coolers. The air cooler that is portable and are not fixed at a particular spot is called the desert cooler. The former are used for small size rooms at our homes or offices and the latter works best for bigger spaces or outdoors for example, while going for a picnic it is a good option to carry the desert cooler.
Affects of an air cooler on our heath vis-à-vis the air conditioner:
- The best air coolers in India are good humidifiers where the moisture content of the air helps to clean the indoor air. It also does not dry the skin or hair. Air conditioners on the other hand cause certain types of respiratory problems and skin issues.
- Some of the air coolers are equipped with dust filters that keep out mosquitoes and pollutants thereby reducing the chances of respiratory problems like asthma and other ailments.
- Since air coolers suck in fresh air from outside and replace the stale indoor air, a room cooled with the cooler helps its occupants to breathe in fresh and clean air. However an air conditioner basically recycles the same air enclosed within a closed space time and again that gets staler with passage of time.
- Finally, the running of an air cooler is dependent on natural resources rather than any man made chemical that the air conditioner uses. The harmful gases emitted by the air conditioner refrigerant degrade the environment further and cause more and more cases of pollution related diseases in man.
For the best cooler price visit some of the online portals or market places that specialize in selling electronic and electrical home appliance goods. When compared to the prices of air conditioners, the cooler price is much more economical and suits the budgets of middle and lower middle class families.
Often one tends to use the air cooler without water to act as a fan or for ventilation purpose so that fresh air from outside is pulled inside the room. It is a good idea to do so in winters or when the weather outside is cooler than the air inside.