Industrial chiller condenser cleaning method

The condenser is one of the main components of the industrial chiller.
During the refrigeration process, the condenser plays the role of outputting the heat absorbed in the evaporator and the heat converted by the compressor work, and transferring the heat to the cooling medium to take away and make refrigeration.
The cooling agent is condensed, which belongs to the heat exchange equipment.
If its performance decreases, it will directly affect the cooling capacity of the chiller
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Commonly used condensers in industrial chillers include air-cooled condensers, water-cooled condensers and evaporative condensers.
Among them, water-cooled condensers have many types such as horizontal shell and tube type, casing type and welded plate.
Here We mainly introduce the cleaning of two commonly used chiller condensers, copper tube fin air-cooled condenser and shell-and-tube water-cooled condenser
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Condenser cleaning time and cycle Usually, the chiller system is equipped with an alarm device.
The condenser is dirty and blocked, resulting in poor heat dissipation, and the condensing pressure rises.
When the high pressure setting limit is exceeded, the system alarm is triggered
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Cleaning of the air-cooled fin condenser The air-cooled condenser uses air as the cooling medium.
Due to the dust in the air, some of the dust will stick to the surface of the condenser fins, which will cause the condenser to dissipate heat for a long time.
The effect becomes poor, especially in places where the environment is relatively harsh, so it should be cleaned regularly
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Simple dust can be cleaned with compressor air, etc.
If there is a lot of dirt, a non-corrosive cleaning agent should be used to clean the heat pipe and fins to achieve the purpose of enhancing the heat dissipation effect
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 　　Cleaning of water-cooled shell-and-tube condensers The cooling water of water-cooled condensers usually adopts an open loop.

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Excessive scaling will also reduce the circulation section of the cooling water, reduce the water volume, and cause the condensation pressure to rise.
Therefore, it is necessary to regularly clean the scale according to the water quality.
The poor water quality (such as groundwater, lake water, etc.
) It can be cleaned every 2-3 years
.

 　　Manual cleaning Use a flat shovel and a small hammer to shield and strike along the outer surface of the pipe to remove the scale outside the pipe
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This method is suitable for shower-type cold lifters
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If the refrigerator is scaled in the tube of the shell and tube condenser, the spider-shaped key wire can be used to pull the brush in the tube
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The method of manual descaling is simple, but the descaling effect is not good, the efficiency is low and the labor intensity is high
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 　　Mechanical cleaning - close the water inlet and outlet valves of the condenser of the unit, and drain the cooling water in the condenser
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 　　- Remove the condenser end cap and clean the scale
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 　　-Choose a suitable cleaning brush and clean it with a cleaning machine
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 　　- After cleaning, open the water valve on one side to rinse the copper pipe
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 　　- Reinstall the condenser end caps and check for tightness
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 　　- Open the inlet and outlet valves of the condenser, make up water, and check for leaks
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 　　- When the conditions are ripe, start the test machine
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 　　Chemical cleaning, such as dilute acid and corrosion inhibitor, may have a corrosive effect on the copper tube wall, so it is recommended to ask a technician to operate, generally only when the scale on the copper tube is too thick and cannot be peeled off after hardening
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 　　Other cleaning methods include automatic online cleaning of rubber balls, high-pressure cleaning, ultrasonic cleaning, and electric double-layer cleaning of negative electron aqueous solution, etc.
, which will not be described here
.