Natural wind enters the cooling tower through the air intake grille, flows upward, and is exhausted from the top of the cooling tower through the exhaust system.

Natural wind enters the cooling tower from both sides, passing through the pre-cooling filler above the cooler and the cooler respectively, converging in the middle of the cooling tower and flowing upwards. The exhaust system expels the air to the top of the cooling tower.

Natural wind enters from two directions: one direction enters from the top air inlet of the cooling tower, passes through the cooler and then enters the air duct; the other direction enters from the air inlet grille, passes through the pre-cooling filler and then enters the air duct. The air from both directions converges and is discharged to the top of the cooling tower through the exhaust system. The spray pump draws water from the sump, passes it through the outer spray pipe to the inner spray device, and sprays it evenly downwards onto the cooler, then onto the pre-cooling filler, and finally back into the sump.

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