Browsing through some portable air conditioner and air cooler, and I finally purchased an Morgan MAC-COOL1 for RM250.
It is an evaporative cooler (wiki), that the air is being force through a running water, forcing the water to evaporated, and thus reduce the temperature of the running water and cools the air. (The one I purchased is not exactly same with the one shown in the image below, but the concept is similar).
The outlook of the Morgan air cooler, you can compare the size of the air cooler with the normal (classic) table fan.
The rear side of the air cooler, with the filter removed, it is a piece of cloth/paper material cooling plate, that allows water to flow from the top to bottom, and the air to flow from rear to the front. The water is evaporated here.
There is a water pump (seems like a normal fish tank filter pump) in the tank that will pump the water from the tank to the top of the unit and let it flow through the cooling plate.
So, I have been using it for around 1 day, and i think that it is "a little bit" better than normal table fan, but it is nothing compare to a real air conditioner. The air from this unit is quite powerful, and according to the sales person, this type of air cooler needs powerful air flow for more cooling effects.
After running the unit for around 30 minutes, you can feels that the water in the water tank become colder than normal water (I am not sure about the temperature), and the air is also a bit colder compare to normal fan, but it do not really cools the whole room. I am not sure why, maybe it is because the super hot weather recently.
Anyone also using air cooler? Any tips to improve the temperature?