In the industrial production process, customers often notice that the cooling efficiency of the closed cooling tower is too low to reach the ideal state. What is causing this? In general, the tower type and design concept of the closed cooling tower The parameters are all harmful to the environmental wet bulb temperature and evaporative cooling capacity. In addition, what are the reasons for the cooling efficiency of industrial closed cooling towers?
The theoretical upper limit of the ambient temperature of the cooling tower outlet water is the wet bulb temperature of the outdoor atmosphere. Therefore, when the temperature of the water at the entrance is corresponding, the lower the wet bulb temperature of the outdoor atmosphere, the greater the difference in the temperature of the water at the entrance, and the stronger the cooling effect of the cooling tower. But what we need to pay attention to is that when the cooling water environment temperature is too low, the cooling burden of the chiller will be greatly reduced, because there is a limit to the cooling load of the condenser of the refrigerator, and there is also a lower temperature limit for the cooling environment temperature. , So I suspect that the ambient temperature is too low. Will cause the chiller operation to be very prone to problems.
When the amount of cooling water corresponds to the outdoor atmospheric wet bulb temperature, as the temperature of the water at the inlet of the cooling tower increases, the temperature of the inlet water and the difference between the temperature of the outlet water and the atmospheric wet bulb will increase, which promotes refrigeration. Therefore, the cooling effect will increase. However, for a cooling tower with a certain structure, because of the limitation of refrigeration, it is very likely that the temperature of the outlet water will be greatly increased, which is likely to cause the chilling burden of the chiller to be too high, making the chiller Insufficient cooling capacity.
When the temperature of the water at the inlet of the cooling water and the atmospheric wet bulb temperature correspond, the amount of cooling water increases, and the total volumetric heat transfer coefficient of the cooling tower will also increase. Although the temperature of the cooling water will decrease to a certain extent, the overall effect will continue. Increase the refrigeration effect. But it should also be noted that because of the increase in the amount of water, the piping
In the closed cooling tower, the reducer is one of the key components, but it is also a kind of wearing parts, and it will fail in different ways under the long-term function of the load, which will damage the closed cooling tower. The operational role. The test confirmed that with the expansion of the approach of the cooling tower, the cooling temperature difference expands accordingly. However, closed cooling towers and open cooling towers show different laws of change in these aspects. Usually, the cooling temperature difference of closed tower type is larger than that of open tower, which is opposite to closed tower air system and water spray system. The cooling water system in the pipe has a separate relationship.
The tower type and design parameters of closed cooling towers will harm the relationship between atmospheric wet bulb temperature and evaporative cooling. Moreover, the atmospheric wet bulb temperature has a significant hazard to the temperature of the outlet water of the closed cooling tower. At the same temperature of the inlet water, the temperature of the outlet water increases steadily along with the increase of the atmospheric wet bulb temperature.
When the service life of the cooling tower is shortened, it also means the aging of the cooling tower, because the longer the use of time, the more serious the wear will be, and the various accessories will be aging and even problems will occur, which will lead to a decrease in work efficiency. The situation occurs, so the use period is also influential.
For closed cooling towers, the main design parameters such as tube material, pipe diameter, wall thickness, etc., also have some different cooling effects. For closed cooling towers with different tower types, their operating conditions and actual cooling efficiency Waiting is all different, all influential. In addition, the valve is too large, the amount of blocked circulating water is too large, or the selection of industrial cooling towers does not match; part of the water outlet of the water distribution pipe is blocked, blocking the bias flow; the ventilation pipe is blocked, resulting in insufficient ventilation, or the fan speed is low; filler Part of obstruction, obstruction, deviation etc.
Guangdong Trlon Energy-saving Air Conditioning Equipment Co., Ltd.
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