Evaporative cooling - Revision history

179.49.41.127 at 21:12, 9 May 2025

2025-05-09T21:12:46Z

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	== References ==		== References ==
	{{wa\|Evaporative_cooler}}		{{wa\|Evaporative_cooler}}
			[[Category:Technology]]
	[[Category:Water]]		[[Category:Water]]

PolarTwin: /* See also */ +Ceramic water filter

2023-01-08T14:03:24Z

PolarTwin: Dependencies section

2023-01-08T13:33:54Z

Dependencies section

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	Evaporative cooling is the conversion of liquid water into vapor using the thermal energy in the air, resulting in a lower air temperature. The energy needed to evaporate the water is taken from the air in the form of sensible heat, which affects the temperature of the air, and converted into latent heat, the energy present in the water vapor component of the air, whilst the air remains at a constant enthalpy value. This conversion of sensible heat to latent heat is known as an isenthalpic process because it occurs at a constant enthalpy value. Evaporative cooling therefore causes a drop in the temperature of air proportional to the sensible heat drop and an increase in humidity proportional to the latent heat gain.		Evaporative cooling is the conversion of liquid water into vapor using the thermal energy in the air, resulting in a lower air temperature. The energy needed to evaporate the water is taken from the air in the form of sensible heat, which affects the temperature of the air, and converted into latent heat, the energy present in the water vapor component of the air, whilst the air remains at a constant enthalpy value. This conversion of sensible heat to latent heat is known as an isenthalpic process because it occurs at a constant enthalpy value. Evaporative cooling therefore causes a drop in the temperature of air proportional to the sensible heat drop and an increase in humidity proportional to the latent heat gain.

			== Dependencies ==

			* [[Water]]
			** '''Evaporative cooling'''
			*** [[Air]]

	== See also ==		== See also ==
	* [[Pot-in-pot refrigerator]]		* [[Pot-in-pot refrigerator]]
			* [[Refrigeration]]

	== References ==		== References ==

PolarTwin: Starting article

2022-12-25T10:52:07Z

Starting article

New page

[[File:Qanat wind tower.svg|thumb|300px|A windcatcher, one of the earliest forms of evaporative cooling, and qanat (a system for transporting water) used for cooling]]

An '''evaporative cooler''' is a device that cools air through the evaporation of [[water]]. Evaporative cooling differs from other air conditioning systems, which use vapor-compression or absorption refrigeration cycles. Evaporative cooling exploits the fact that water will absorb a relatively large amount of [[heat]] in order to evaporate. The temperature of dry [[air]] can be dropped significantly through the phase transition of liquid water to water vapor (evaporation). This can cool air using much less [[energy]] than [[refrigeration]]. In extremely dry climates, evaporative cooling of air has the added benefit of conditioning the air with more moisture for the comfort of building occupants.

The cooling potential for evaporative cooling is dependent on the wet-bulb depression, the difference between dry-bulb temperature and wet-bulb temperature. In arid climates, evaporative cooling can reduce energy consumption and total equipment for conditioning as an alternative to compressor-based cooling. In climates not considered arid, indirect evaporative cooling can still take advantage of the evaporative cooling process without increasing humidity. Passive evaporative cooling strategies can offer the same benefits of mechanical evaporative cooling systems without the complexity of equipment and ductwork.

Evaporative cooling is the conversion of liquid water into vapor using the thermal energy in the air, resulting in a lower air temperature. The energy needed to evaporate the water is taken from the air in the form of sensible heat, which affects the temperature of the air, and converted into latent heat, the energy present in the water vapor component of the air, whilst the air remains at a constant enthalpy value. This conversion of sensible heat to latent heat is known as an isenthalpic process because it occurs at a constant enthalpy value. Evaporative cooling therefore causes a drop in the temperature of air proportional to the sensible heat drop and an increase in humidity proportional to the latent heat gain.

== See also ==
* [[Pot-in-pot refrigerator]]

== References ==
{{wa|Evaporative_cooler}}

[[Category:Water]]

← Older revision		Revision as of 14:03, 8 January 2023
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	== See also ==		== See also ==
			* [[Ceramic water filter]]
	* [[Pot-in-pot refrigerator]]		* [[Pot-in-pot refrigerator]]
	* [[Refrigeration]]		* [[Refrigeration]]