Techniques for the selection of cooling coil materials for closed cooling towers
2022-06-23
First look at thermal resistance. In theory, the larger the thermal conductivity of the metal material, the smaller the thermal resistance, and the smaller the thermal resistance, the faster the heat transfer between the cooling liquid and the cooling water. Therefore, when choosing a cooling coil, be sure to choose a metal material with a large thermal conductivity. Now aluminum alloy, steel pipe and galvanized steel pipe are more commonly used cooling coil materials for closed cooling towers.
The second depends on the thermal resistance of dirt. The scaling problem is one of the common problems of closed cooling towers. Although the cooling liquid is not in contact with the outside world, scaling problems rarely occur, but the cooling water will cause scaling on the outer wall of the cooling coil, which then reduces heat exchange. efficiency. Which metal material still has lower thermal resistance in the case of scaling will be more conducive to cooling the cooling water.
After confirming the metal material of the closed cooling tower coil, also pay attention to the design of the coil shape, diameter and length. At present, the common shapes of cooling coils are round and oval, which need to be selected according to the cooling efficiency, and the length of the design should take into account the size of the closed cooling tower and the cost of manufacturing.
In a closed cooling tower, a large part of the cost lies in the colored jade of its outer shell. Because it needs to support the water circulation system, fan system, and internal components of the closed cooling tower. It is necessary to ensure that the closed cooling tower is not corroded, can be used for a long time, and save the cost of materials, so we have been looking for a balance between the two.
The water filling of the closed cooling tower should have a shortened inclination to the straight central axis of the tower from the top to the bottom. The shortened inclination angle of the drip-type water-spraying packing should be
The effect of the air duct in the closed cooling tower should not be underestimated, it is not only the protective structure of the equipment
In the traditional closed cooling tower, the short air duct with right-angle suction is equipped, and the air duct in this way has obvious shortcomings. In order to overcome the existing harm, it is recommended to use a reflective cyclone kinetic energy recovery air duct, which not only eliminates the shortcomings of wall-off flow and excessive central back pressure area, but also reduces the kinetic energy consumption of air flow.
In a closed cooling tower, a large part of the cost lies in the colored jade of its outer shell. Because it needs to support the water circulation system, fan system, and internal components of the closed cooling tower. It is necessary to ensure that the closed cooling tower is not corroded, can be used for a long time, and save the cost of materials, so we have been looking for a balance between the two.
Stainless steel closed cooling tower equipment is expensive, while galvanized materials are relatively cheap. Moreover, galvanized steel has been treated because of its appearance, which relatively delays the corrosion of steel. However, once a small part of galvanized steel is galvanized If the surface of the material is damaged, it will accelerate the rate of corrosion of the steel, so make sure that the surface of the galvanized steel is in good condition.
The water filling of the closed cooling tower should have a shortened inclination to the straight central axis of the tower from the top to the bottom. The shortened inclination angle of the drip-type water-spraying filler should be such that the effect of the air duct in the closed cooling tower should not be underestimated, it is not only the protective structure of the equipment
The Company is specialized in R&D, production and sales of a variety of water cooling products, such as closed cooling tower, crossflow tower, countercurrent tower, refrigerator, evaporative condenser, etc. In addition, the Company provides consulting of other relevant spare and accessory parts as well as technologies.
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