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What is the effect of cooling tower packing on the water temperature of the exit tower?

Dec. 27, 2019

The cooling process of circulating water is closely related to the functions of air distribution, water distribution and cooling tower packing. The superiority of Cooling Tower PP Fill function directly affects the economical operation of the cooling tower. The cooling tower packing brings different cooling capacity due to the difference in its thermal function and resistance characteristics.

Cooling Tower PP Fill

Cooling Tower PP Fill

As a Cooling Tower Fill Manufacturer, share with you the characteristics of cooling tower fill:

(1) When the fillers with the same geometric shape have different thickness and spacing, the water temperature differs by 0.42 ~ 0.70 oC

(2) The effect of the shape of the filler on the water temperature reaches 1.14 oC;

(3) The heat transfer function of plastic filler is better than that of cement grid plate. Therefore, the selection of cooling tower packings with excellent functions can reduce the temperature of the water exiting the tower and has a small ventilation resistance.

Regardless of whether the cooling tower is countercurrent or countercurrent, the high-performance film packing can reduce the cooling water by 5 ~ 8 oC. For existing cooling towers, the cooling capacity is increased by 50% or more. Paying attention to the operation and maintenance of the cooling tower packing, reducing the icing and damage of the cooling tower is an important method to improve the thermal function of the cooling tower.

After 4 years of use, the cooling tower packing should be replaced irregularly to ensure the normal working efficiency of the cooling tower. There has been aging for a long time, and some of the packings has fallen off, causing the cooling tower's heat exchange capacity to decline. It affects the operation efficiency of the refrigeration unit and consumes a lot of energy. At the same time, the broken cooling tower packing entered the condenser copper tube of the unit with the operation of the cooling water pump. In addition, the new cooling water treatment agent (hydroxycarboxylate) currently used by our department has a strong function of peeling rust. The copper tube of the condenser of the unit will be blocked.

If uneven distribution of water is found during the operation of the cooling tower, efforts should be made to eliminate the cause in time, usually due to the clogging of the water distribution pipe and the ejection of the nozzle. The dirt accumulated in the cooling pool and cooling tower fillers should be removed in time, and should generally be cleaned up every time it is stopped. When algae growth is found in the circulating water, impact chlorine should be added, and the remaining chlorine in the water should be treated with 4mg / L or bleaching powder for a short time. The turbidity and volume of water entering and exiting the glass fiber reinforced plastic cooling tower shall be included in the cooling tower operation record to accumulate maintenance management data and serve as a technical basis for repair and improvement of the cooling effect.

The choice of outdoor switching temperature point of cooling tower cooling mode is directly related to the system cooling hours. Assume that the required water supply and humidity at the end of the air conditioner are 12.7 ° C. Considering the cooling width of the cooling tower, heat loss of pipes and heat exchangers, etc., to increase the water temperature by 4.5 ° C, it can be switched to cooling tower cooling mode when the outdoor wet-bulb temperature is equal to or lower than 8.2 ° C. After the cooling tower in the system is selected according to the summer cold load and the outdoor calculated wet bulb temperature, it should also check its cooling capacity in the cooling tower cooling mode. The plate heat exchanger should be selected as the heat exchanger in the indirect cooling system. Our company also has Cooling Tower PP infill on sale, welcome to consult.