Principle of the air cooler

July 01, 2021

Principle of the air cooler

The cooling fan (evaporative air conditioner) cooling principle is: when the fan is running, it enters the cavity to generate negative pressure, so that the air flow outside the machine is excessive.

The wet curtain surface of the cold air blower hole forces the dry bulb temperature of the curtain air to drop to the wet bulb temperature close to the outside air, that is, the dry bulb temperature of the air cooler outlet is 5-12 ° C lower than the outdoor dry bulb temperature (dry heat area) Up to 15 ° C), the hotter the air, the greater the temperature difference, the better the cooling effect.

Since the air is always introduced into the room from outside (this is called a positive pressure system), it can keep the indoor air fresh. At the same time, because the machine uses the principle of evaporation and cooling, it has the dual functions of cooling and humidifying (relative temperature can reach 75%). Left and right), used in textile, knitting and other workshops, not only can improve the temperature and temperature increase conditions, but also purify the air, reduce the needle breakage rate in the needle spinning process, and improve the quality of the needle textile products.

The air cooler (evaporative air conditioner) is surrounded by a honeycomb wet curtain using special materials, which has a large surface area, and the wet curtain is continuously humidified by the water circulation system; the high-efficiency low-noise energy-saving fan is installed in the wet curtain air cooler. When the fan is running, the negative pressure of the wet curtain air cooler causes the air outside the machine to flow through the porous wet curtain into the machine, and the heat of the water on the wet curtain absorbs heat, forcing the air passing through the wet curtain to cool down. At the same time, since the water on the wet curtain evaporates toward the air flowing through the wet curtain, the humidity of the air is increased, so the wet curtain air cooler has the dual functions of cooling and humidifying.

Industrial cooling fan principle

Commonly used in the industry is a dry cooling fan. It relies on the evaporation of air through the chiller to cool the forced air outside the tube. It is installed in the floor of the cold storage, called the floor-standing chiller; it is installed on the top of the warehouse, called the ceiling type chiller.

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Ms. Judy Tang

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