Anti - freezing scheme and description of closed cooling tower - Industry news - Jiangsu Lianzhou Environmental Protection Equipment Co., Ltd

Anti - freezing scheme and description of closed cooling tower

文章来源：admin 时间：2016-12-19 18:53:56

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On the northern and possibly frozen areas in winter closed cooling tower antifreeze problem, do the following preventive measures:

1 The antifreeze practice for spray water outside the coil is similar to the open cooling tower:

1) cooling tower in the long-term shutdown after the cooling tower and piping in the water to be vented to prevent the pipeline cracking.
2) need to be running only need to consider the installation of electric heaters in the tank, the cooling tower at a lower temperature (can be set and adjusted, usually around 10 ℃) short time after the shutdown can open the heater to avoid freezing; Of course, the use of electric heating must have a strict water level and temperature control measures and correct operation of the use of methods, principles and instructions detailed below. This type of control and protection in the export of Russian cooling towers has been widely and maturely applied.
3) Block the part of the fan side of the nozzle (on the Xinling Ji Liya cross-flow closed cooling tower) to increase the cooling tower inlet air drenching density, in order to avoid spray water in the air inlet at the ice.
4) to stop part of the fan or clearance to open the fan, the conditions required to use frequency conversion technology to achieve energy saving and precise control.
5) in the cooling tower spray pipe on the default bypass pipe, in the inlet pipe into the cooling tower before the access directly to the basin, the flow is about 20% -30% of the cooling water flow, can add a valve to adjust the amount of water To avoid water in the basin.

2 on the coil within the cooling water antifreeze method is as follows:

1) winter shutdown is not running, the need to coil and cooling water pipes in the water, for the coil of the water, the company has been fully considered in the design, you can ensure that the coil does not stay water.
2) winter closed cooling tower operation, coil outside the spray water to ensure that the minimum temperature above 8 ℃, can prevent the coil cooling water ice. See the description of item 1 and the following illustration.
3) Exposure to the cooling water pipe in the outdoor part, to be considered in the pipeline plus a heating zone to prevent the night pipe cooling water ice.
4) In the process acceptable conditions, in the cooling water by adding antifreeze is also one of the options.
5) In conditional areas, the effective use of plumbing is also included in the range of antifreeze considerations.

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