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Why air coolers will not provide effective cooling in humid areas?
Wiki User
∙ 13y ago
Air coolers work by evaporating water into the air. Because air can only hold a certain amount of moisture, the more moisture in the air to begin with, the less you can add.
The technical answer is to use a psychrometric chart to analyze the problem.
A common thermometer measures dry bulb temperatures (the x-axis on the chart). From that temperature follow a vertical line up until you reach the current relative humidity value. This intersection gives the properties for the air you're trying to cool. From this point, a horizontal line all the way to the left side of the graph will give you the temperature for 100% relative humidity level. This value is the theoretical minimum temperature you can reach through evaporative cooling.
Seeing this with numbers shows that a common value for someplace humid, like Florida today is, 80 deg F and around 80% humidity. If you follow these values on the chart, the minimum temperature you can achieve is around 74 deg F @ 100% humidity.
The same problem with cooling someplace dry, like Arizona, where the temperature is warmer, 100 deg F, but the humidity is lower, 15%, can get a minimum temperature of 44 deg F @ 100% humidity.
This level of humidity is uncomfortable, and most people shoot for around 50%. If you live someplace dry use evaporative cooling (adding moisture to cool a space) and if you live someplace humid, use air conditioning (cooling & removing moisture to condition a space).
Wiki User
∙ 13y ago
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From areas of high pressure to areas of low pressure. Hope this helps! :)
Installing evaportaive cooler on my home?
You can install an evaporative cooler. They are only effective in very dry areas. If the humidity regularly gets high, they are not effective in cooling. For more information you can visit the swamp coolers page at www.hvac-for-beginners.com
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Solar air conditioners are generally preferred over solar air coolers because they are more effective at cooling and can maintain a constant temperature even in extremely hot weather conditions. Solar air conditioners use a vapor compression refrigeration cycle, similar to traditional air conditioners, but they are powered by solar energy instead of electricity from the grid. On the other hand, solar air coolers, also known as evaporative coolers, use a different cooling mechanism. They work by blowing air over a wet pad or filter, which evaporates the water and cools the air. However, they are less effective in high humidity areas, and they can only cool the air to a certain extent, which is usually a few degrees lower than the ambient temperature. They also require more maintenance, as the wet pad or filter needs to be cleaned regularly to prevent mold and bacteria growth. Overall, solar air conditioners are preferred over solar air coolers because they offer more efficient and consistent cooling performance, especially in hotter and more humid environments. However, solar air coolers can still be a good option for low-humidity environments or for use as a supplementary cooling system.
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Sweating cools down the body through evaporative cooling. As the liquid evaporates energy is absorbed from the skin. Sweating is not effective in high humidity areas.
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Electricity was introduced in urban areas before rural areas as there is more population in urban areas. This would mean that there is therefore more demand. Also, in rural areas, it can be harder and less cost effective to provide electricity as it may be just a small cluster of houses.
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Alvarion provide high quality wireless broadband connectivity solutions which are optimised for efficiency. They offer cost effective latest technology broadband to rural and metropolitan areas, anytime and anyplace.
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An evaporative cooling system allows air to be cooled through the simple evaporation of water. This type of element is best used in hot, dry climates such as the western/mountain states and Australia. One things that makes them so popular in these areas is that they can be as much as 80% cheaper than traditional refridgerated air. They are used quite widely commercially in such places as laundromats, dry cleaners, green houses and confinement farming. In areas of high humidity, evaporative cooling systems do not do a whole lot other than just push the air around.
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Various Uses for a Spot Cooler?
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