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Detailed explanation of three common cooling tower types


At present, there are many types of cooling towers, and there are three more common, namely square cross-flow FRP cooling towers, circular counter-flow FRP cooling towers, and square counter-flow FRP.

There are three types of cooling towers. The following three types of common types are described in detail to help friends in need to buy suitable cooling tower products!

I. Description of square cross-flow FRP cooling tower:

(1) Standard design conditions: dry bulb temperature 31.5 ° C, wet bulb temperature 28 ° C, atmospheric pressure 99400Pa, inlet water temperature 42 ° C, and outlet water temperature 32 ° C;
(2) Multiple cooling towers can be combined in parallel to form various types of water;
(3) The structure itself gives the product excellent low-noise performance (there is no rain area at the bottom of the filler, so there is no dripping noise);
(4) Low vertical installation height, suitable for some special places;
(5) Adopting large diameter, large area, low speed, and low dynamic pressure glass fiber reinforced plastic fan blades with airfoil-shaped hollow web structure, the use of this type of cooling tower has significant features of energy saving and low noise;
(6) The ultra-low-noise cooling tower is equipped with high-efficiency noise reduction devices at the air inlet and outlet, so that the cooling towers of the same level can effectively reduce the noise by 5dB (A);
(7) The trough water distribution system is adopted to distribute water evenly and not to be easily blocked;
(8) The sprinkler packing itself has a honeycomb water collector, which has an excellent water collection effect and reduces the water loss in the cooling tower to less than 0.01%;
(9) Simple structure, low operating weight, maintenance platform is set on the top of the tower, which makes maintenance more convenient;


Second, circular counter-flow glass fiber reinforced plastic cooling tower: suitable for small and medium-sized water, circulating water cooling system with multiple water sources dispersed arrangement, the layout is very flexible and convenient.

Note 1:
(1) Standard design conditions: dry bulb temperature 31.5 ° C, wet bulb temperature 28 ° C, atmospheric pressure 99400Pa, inlet water temperature 42 ° C, and outlet water temperature 32 ° C;
(2) The selection of special packing for stacked high-efficiency round towers enables this type of cooling tower to achieve the design goals of compact structure, small footprint, flexible and convenient layout;
(3) Adopting large diameter, large area, low speed, and low dynamic pressure glass fiber reinforced plastic fan blades with airfoil-shaped hollow web structure, the use of this type of cooling tower has significant characteristics of energy saving and low noise;
(4) Ultra-low-noise cooling towers are equipped with high-efficiency noise reduction devices at the air inlets and outlets and in the rain area, so that the cooling towers of the same level can effectively reduce the noise by 5dB (A);
(5) The application of a large number of high-strength FRP structural parts on such cooling towers has the obvious advantages of excellent corrosion resistance and long service life;
(6) The small cooling tower uses a rotating water distribution system, which has a simple structure and uniform water distribution, which further improves the thermal performance of the cooling tower. The large cooling tower uses a fixed water distribution system to further improve the tower body.

Stable performance
(7) The rotating water distribution system is provided with a baffle device, and the fixed water distribution system is provided with a water collector device, so that the water loss in the cooling tower is reduced to less than 0.01%;
(8) The round tower structure itself gives it good wind pressure resistance, especially suitable for use in coastal typhoon areas. The design of this type of cooling tower has a wind resistance of 0.75KN / m2; 9. Small size and light weight

Simple structure, extremely simple and convenient installation and maintenance;

Note 2:
(1) Standard point is less than 72dB (A) when using planetary gear reducer. The noise value of standard point when using power belt reducer is the same as that of low-noise type cooling tower of the same diameter.
(2) The amount of cooling water with the wet bulb temperatures T = 28 ° C and T = 27 ° C listed in this table. The working conditions are as follows: When the water temperature drops △ t = 10 ° C, the inlet water temperature t = 43 ° C. , Outlet temperature t2 = 33 ℃. when

When the water temperature drop Δt = 20 ° C and 25 ° C, the inlet water temperature t1 is 60 and 55 ° C, respectively, and the outlet water temperature t2 = 35 ° C.
(3) Water inlet pressure refers to the water pressure at the connection point 1Kgf / cm2 = 9.8 × 104Pa. The water pressure of this series of towers is between 0.3 ~ 0.5Kgf / cm2.


3. Description of square counterflow glass fiber reinforced plastic cooling tower:

(1) Standard design conditions: dry bulb temperature 31.5 ° C, wet bulb temperature 28 ° C, atmospheric pressure 99400Pa, inlet water temperature 42 ° C, and outlet water temperature 32 ° C;
(2) The special packing for inclined trapezoidal wave square tower is used, which has excellent thermal performance and small ventilation resistance, so that this type of cooling tower can achieve the design purpose of compact structure and small footprint;
(3) Adopting large diameter, large area, low speed, and low dynamic pressure glass fiber reinforced plastic fan blades with airfoil-shaped hollow web structure, the use of this type of cooling tower has significant characteristics of energy saving and low noise;
(4) Ultra-low-noise cooling towers are equipped with high-efficiency noise reduction devices at the air inlets and outlets and in the rain area, so that the cooling towers of the same level can effectively reduce the noise by 5dB (A);
(5) Various forms of parallel combination can be made, which is more suitable for the use of large-scale circulating cooling water systems;
(6) The fixed water distribution system is adopted, and the ABS multi-layer low-pressure sprinkler head is used. The water distribution is uniform, the service life is long, and the water distribution pressure head is low, which is conducive to saving the water distribution power of the system.
(7) The BO-160 / 45 asymmetric water collector device is installed on the water distribution pipe, which has an excellent water collection effect and reduces the water loss in the cooling tower to less than 0.01%;
(8) The frame of the tower can be made of Q-235, 304 stainless steel, and FRP. The "304 / FRP" frame can be used in acidic environments where the pH of the circulating water is less than 1.0;
(9) The cooling tower frame with a water volume of 800m3 / h can be a reinforced concrete frame. Although the frame has a slightly longer construction cycle and a higher one-time investment, it has high quality such as long service life and low maintenance costs.

Users can choose according to the actual situation;
(10) If the turbidity of circulating water is higher than 50ppm for a long time, or contains impurities such as oil, you need to choose PVC grid packing or 304 stainless steel hanging plate drip filling according to the water quality conditions. The filler is suitable for circulating water turbidity.

Degree can be extended to 450ppm;
(11) The structure is stable, and an overhaul platform is set at the top of the tower, making it easier to maintain and overhaul;

The above is a detailed description of the three types of cooling towers: square cross-flow FRP cooling tower, circular counter-flow FRP cooling tower, and square counter-flow FRP cooling tower. More related product information is welcome.

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