Simply put, the role of the filler in the cooling tower is to increase the heat dissipation, extend the cooling water residence time, increase the heat exchange area, and increase the heat exchange. Spread water evenly. It is not to fill something in the tower with something that needs to be cooled. A cooling tower is a device that cools hot fluids, including water, to a reasonable temperature. The waste heat generated during industrial production or refrigeration processes is generally guided by cooling water. The function of the cooling tower is to exchange heat between the cooling water with waste heat and the air in the tower to transfer the waste heat to the air and to the atmosphere. Cooling tower applications: air conditioning cooling systems, refrigeration series, electric furnaces, injection molding, tanning, power generation, steam turbines, aluminum profile processing, air compressors, industrial water cooling and other fields.
Square tower packing performance characteristics:
1, advanced design, with small ventilation resistance, strong hydrophilicity, large contact area, etc. 2, water distribution and air distribution, large specific surface area, good thermal and resistance properties 3, good chemical stability, acid, alkali and organic Corrosion of solvent 4, flame retardant performance aerobic index ≥ 30 (self-extinguishing in one second).
Cooling tower packing: Filling is the most important part of the cooling tower. Its efficiency depends on the extent to which the cooling water is in full contact with the air. The company's filler temperature is 50 ° C ~ 68 ° C, anti-aging, excellent performance and long life. The advantages are as follows:
1, good heat exchange performance, high cooling efficiency
The filler is a film type, and the fine corrugations of the protrusions make the water contact surface larger. The filler is placed in five layers, and there is a redistribution process of hot water between the layers.
2, good hydrophilicity, low ventilation resistance
The surface has a rough, smooth surface. The filler has good hydrophilicity and the water absorption rate is less than 0.015%, so that more water flows to form a film without splashing, making water and air more fully contact and causing surface disturbance of water and air while flowing. Big. After the packing is assembled, the air inlet surface is a honeycomb-shaped deflector, which has a good uniform distribution effect, and improves and stabilizes the heat exchange intensity of water and gas.
The inlet end is inclined at an angle of 30°, which effectively reduces the drifting water loss. A water trap designed by the impact separation method is arranged at the end of the packing, so that the drifting loss is effectively controlled within five hundred thousandths.
3, easy to install, easy to clean, easy to transport
The heat-dissipating filler adopts a non-bonding suspension type, is easy to install, and is easy to clean, and successfully solves the problem that the adhesive filler is deformed due to dust accumulation, self-weight, and the scale is more serious and difficult to clean after deformation. The filler has good flame retardant performance and has been tested: the flame retardant oxygen index is greater than 28.
1. Cooling tower packing specific surface area P = unit surface area The surface area of ​​the packing is called the specific surface area, and the unit is m3/m3. The larger the specific surface area of ​​the filler, the larger the gas-liquid contact area that can be provided. It should be noted that the actual gas-liquid contact area is inevitably smaller than the specific surface area of ​​the ballast due to the weight of the packing and the incomplete moisture of the packing.
2. Void rate. The void volume per unit volume of the packing layer, called void ratio, is a variable of one dimension. Its value is not only related to the structure of the packing, but also to the way the packing is installed. The gas in the packed column passes through the voids between the packings, and the resistance of the fluid through the layer of particles is closely related to the void ratio. The larger the ¥, the smaller the gas flow resistance and the stronger the passing ability. Therefore, the filler layer should have as large a void ratio as possible.
3. The number of fillers accumulated per unit volume For the same type of filler, the number of fillers per unit volume is related to the size of the filler. The filler size is small. The number of fillers increases. The specific surface area of ​​the filler layer increases and the void ratio decreases, the gas flow resistance phase increases, and the cost of the filler increases accordingly. On the other hand, if the size of the packing is too large, the air between the packing layer and the tower wall is large near the wall of the tower, and a large pot of gas is short-circuited thereby, resulting in uneven distribution of the air flow. In order to control the uneven distribution of the gas flow, the packing size should not be larger than the tower diameter 1110~118.
4. Filler factors Filler factors are dry filler factor and wet filler factor. QIs, called dry filler factors, are in units of IIm. However, after the filler is wetted, a layer of liquid film is coated on the surface of the annoyed material, and the actual specific surface area and air-drying rate of the filler change correspondingly. The slope factor at this time is called a wet filler factor (also called a filler factor). Expressed in coins, the unit is also 1/two. The currency reflects the hydrodynamic performance of the bin material in actual operation, and its value can be used as the basis for the passing capacity and pressure drop of various fillers. The smaller the small value, the smaller the fluid flow resistance and the higher the flooding speed.
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Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
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