The heat exchange cooling coil is the core component of a closed cooling tower. The cooling coils in a closed cooling tower mainly utilize the principle of indirect evaporative cooling to avoid direct contact between cooling water and air, preventing water quality pollution. Pipeline cleaning can ensure sufficient and effective heat exchange area, reduce maintenance costs, and extend the service life of equipment.

High efficient condensing coil

Optimization design of high-efficiency condensing coils: The coils are made of high-quality and efficient thermal conductive materials, and are gradually processed into elliptical tubes. The rows of tubes are arranged in a compact and cross manner in the direction of airflow, and the heat exchange area can be increased within the same volume. The spacing between the rows of tubes is large, and under the same airflow conditions, the water volume between the tubes is increased, the water film thickness is increased, and the thermal conductivity area is enhanced. The condensate discharge pipe is based on the refrigerant flow Tilt at a certain angle to facilitate the flow of refrigerant liquid. During the carefully crafted process, three 2.5MPa airtightness tests were conducted to ensure no leakage. The condensing coil and its accessories have undergone high-temperature hot-dip galvanizing treatment, with a zinc layer thickness of over 0.05mm, demonstrating excellent corrosion resistance. Can greatly extend the service life.

Coil arrangement

The coil adopts a layout close to a triangular cross arrangement. As shown in the figure, the centers of three adjacent pipes form an approximate equilateral triangle. This can allow the spray water to fully moisten the outer surface of the coil.

The factors affecting the performance of cooling coils in closed cooling towers

1. The length of the cooling coil: When the length of the coil in a closed cooling tower changes, the number of pipe rows will increase, leading to resistance loss and oscillation in coil area. The longer the length of the cooling coil, the larger the overall area of the coil and the larger the exchange area of hot water. But at this point, the flow resistance of the coolant will also increase. Finding the balance point between exchange area and resistance loss can greatly improve the cooling efficiency of the equipment.
2. The width of the cooling coil: if you want to reduce the flow resistance of the coolant, you can increase the width of the cooling coil. However, based on the experience of manufacturers, it has been found that the wider the width of the cooling coil, the better, as it will increase the cost of producing closed cooling towers. Moreover, when the cooling coil is too wide, the area requirements for the equipment are relatively high.
3. The spacing between cooling coils: as the spacing between the cooling coils of the equipment increases, the flow resistance of the coolant will increase, and the area occupied by the coils will also increase. But this design can allow hot water to stay on the cooling coil for a longer period of time, making heat exchange more efficient. When the spacing between the cooling coils is twice the outer diameter of the coils, the improvement in the cooling effect of the closed cooling tower will be more significant.