Evaporative cooling fan in the market for sale at present. There are many brands, the size varies depending on the application. The evaporative cooling fan, this is no spray spread out like a fan, usually at work. The evaporative cooling fan to blow the cool wind out. Which is like a normal fan. Here is a question for the buyer. You fan cooling fan is cooler than normal? The seller will always bring you fan cooling this test you by turning the fan on him. Which is often like a cool air. But you may forget to think that place vendor open experiments in any air conditioning. If you want to test, should take the test at room temperature. No air conditioning, and no ice used water temperature is normal. If it can reduce the temperature down real as advertising, then buy used.The working principle of this type of fan, how does it work? By this type of fan based on the principle of simple called evaporation of water Evaporation by water flowing through the heat exchanger, Cooling panel Pad when water flow through the small gaps in cooling pad fan will suck the air through the panel cooling pad, which will make the temperature through the panel temperature decreases. But there will be a loss of water to the part. In the heat exchanger, which rely primarily on heat transfer contact (sensible heat) from water to air, or air to water. And evaporation of some water out of the water in the circulation. Cause (latent latent heat transfer heat) from the panel water into the air. It requires basic concepts of heat transfer and mass transfer process. In this heat transfer heat transfer mechanism in the evaporative cooling fan will occur within the panel. Cooling pad referred to cooling pad has coefficient of transfer. The measure can be quite difficult, so the heat transfer coefficient เชิงปริมาตร (volumetric heat transfer coefficient. ) is variable to indicate the performance of cooling pad test for the performance of the cooling pad must therefore based on the volumetric heat transfer coefficient in the calculation. Transfer coefficient of.
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