EVAPOLAR: a short test using a thermal imager

Believe it works! Developers used nano-fibers to create evaporating plates. So they have achieved a uniform and intensive humidification of the cartridge, designed to effectively cool the air in a limited space with a radius of 2 to 3 meters. The temperature in the cooling zone depends on how intense the evaporation is, and its degree of adjustment is made by the device itself. Moisture is distributed throughout the cooling cartridge, so the air is well cooled and humidified with minimal energy costs. Most wall and floor-mounted air conditioners have more than 10 times the energy spent.

For the operation of the device requires only water. The water tank is located on the left side of the device.

Remove, pour and install back, the water will begin to flow into the cartridge automatically.

Depending on the air quality in the room of one tank, it lasts for 3-5 hours of continuous work.

Turn on the power supply and insert the other end of the USB cable into the air conditioner. The device can also work from a portable power source (external battery).

The walls of the tank are transparent, which allows you to quickly understand how much water is left. The evaporating cartridge absorbs up to 400 ml of water, i.e. the device will cool the air for several hours after the water in the tank is over.

By default, the air conditioner alerts you when water is exhausted, but you can turn off this alert or change its color as you like.

After the water has completely evaporated, the device will continue to operate as a normal fan. The replaceable tank can be used with the device turned on - this will not affect its operation.

The touch screen on the device has several functions:

- Night mode. In night mode, the backlight of the device is turned off, and the brightness of the screen backlight is reduced to a minimum.
- Highlight color. You can choose the color of the backlight of the water tank.
- The brightness of the backlight. You can adjust the brightness of the backlight of the water tank or turn it off.
- Units. Temperatures can be displayed in degrees Celsius or Fahrenheit.
- Alerts. When the evaporating cartridge is completely dry, the device will inform us about this by changing the color of the backlight. You can choose a color or completely disable this feature.

Turn on and measure the outlet temperature - + 16 ° C degrees. Cool enough.

Water enough for 3 hours. Overboard temperature was about 28 ° C degrees, and outside it was + 38 ° C degrees. The cooling and moisturizing device weighs quite a bit - 1.680 g.

In the tests used a thermal imager SeekThermal .

Believe it works!

Video clip

Author: Dmitry, Essentuki

Bonus 10% for blog readers for promo code GT-EVAPOLAR is valid for 14 days.


Evaporative cooler (also cooler with moist air, evaporative cooler / conditioner, bioconditioner) is a device that cools air by evaporating water. Evaporative cooling is different from conventional air conditioning systems using a vapor compression cycle or an absorption cooling cycle. It is based on the use of a large specific heat of evaporation of water. The temperature of dry air can be significantly reduced by the phase transition of liquid water into steam, and this process requires significantly less energy than compression cooling. In very dry climates, evaporative cooling also has the advantage that when air conditioning increases its humidity, it creates more comfort for people in the room. However, unlike vapor compression cooling, it requires a constant source of water, and consumes it continuously during operation.

Evaporation cooling is a physical phenomenon in which the evaporation of a liquid into the surrounding air cools the object or the liquid in contact with it. The latent heat, the amount of heat needed to evaporate the liquid, is taken from the environment. When studying the evaporation of water, a wet thermometer is compared with a dry one, the resulting value corresponds to the cooling potential during evaporation. The greater the difference between the two temperatures, the greater the cooling effect. If the temperature is the same, then water does not evaporate into the surrounding atmosphere, respectively, and there is no cooling effect either.

A simple example of natural evaporative cooling is perspiration, while the body produces sweat for its own cooling. The amount of heat transferred depends on the level of evaporation, for each kilogram of evaporated water is transmitted 2257 kJ (at a temperature of 35 ° C). The level of evaporation depends on the humidity and temperature of the surrounding air, so in hot, humid days, sweat builds up on the body. The perspiration produced in such conditions cannot evaporate.

The principle of evaporative cooling is different from the one on which vapor compression cooling machines operate, although they also require evaporation (evaporation is part of the system). In the vapor compression cycle, after the refrigerant evaporates inside the evaporative coil, the cooling gas is compressed and cooled, condensing under pressure to a liquid state. In contrast to this cycle, water evaporates in the evaporative cooler only once. Evaporated water in the cooling unit is discharged into the air cooled space. In the cooling tower, the evaporated water is carried away by the air flow.

World's first personal air conditioner. indiegogo.com

Source: https://habr.com/ru/post/405239/

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