Improve Operating Efficiency Condenser Tube Cleaning System Water Treatment Equipment
Introduction to condenser tube cleaning system
Condenser tube cleaning system is a device used to scrub the inner wall of heat transfer tubes of central air-conditioner condenser by physical method.When the central air-conditioner is in refrigeration process,the temperature of the refrigerant rises,so it must be lowered.Cooling water system is the pipeline system used for cooling down the refrigerant and the condenser is the heat-exchange device for cooling refrigerant.Cooling water flows into the condenser through the inner wall of the heat transfer tubes and then flows out.The cooling refrigerant flows through the outer wall of the heat transfer tubes and the condenser exchanges heat by heat transfer tubes,and thus cool down the refrigerant.The cooling water flows into the condenser at a low temperature and flows out at a high temperature after absorbing heat.After operating for a long time,the heat transfer tubes may have incrustation,fouling and stain sediment on inner wall,which may affect the heat transfer efficiency.Small temperature drop of the refrigerant affects the refrigeration effect, increases the load on the host of the central air-conditioner and reduces the life of it,so the inner wall of the condenser heat transfer tubes must be regularly cleaned to extend the life of it.
On-line condenser cleaning system is a kind of equipment used for automatically cleaning the inner wall of the condenser heat transfer tubes on line by physical method when the refrigerating unit is under operation.By injecting and collecting the balls,the system can clean the heat transfer tubes periodically.This system can reduce usage amount of Water Treatment chemicals,enhance refrigerating efficiency of the unit and save electric energy.
Operating principle of condenser tube cleaning system
To start with the water pump of the condenser tube cleaning system and pump the balls from the ball injector to the water inlet of the condenser with water.The balls enter the end cover of the condenser along with the circulating cooling water and get into the copper tube of the condenser randomly.Driven by the circulating cooling water,the balls move inside the copper tube to scrub the inner wall of the tube.After leaving the tube,the balls get out of the end cover of the condenser with the circulating cooling water and enters the ball collector installed on the outlet pipeline of the condenser.Ball trap in the ball collector then traps the balls,with the water flowing away through the screen.Then the balls return to the ball injector,which means a whole cleaning process is finished.The cleaning frequency and times can be set via microcomputer control program,to realize automatic on-line cleaning.
Specification for balls and adaptive inner diameters of copper tube to be cleaned
|Inner diameters of copper tube |
|Diameters of balls (mm)||17||18||19||20||21||22||23||24||25||26|
Functions of condenser tube cleaning system
Improve operating efficiency
Since condenser tube cleaning system that enables copper tube of condenser to get rid of scaling and operation of compressor will not exceed the design limit,the central air-conditioner can operate at its optimum efficiency.
Extend service life of central air-conditioner and reduce maintenance
Since operation of compressor will not exceed its design limit, life of equipment is extended, and thus effectiveness and investment return of the central air-conditioner are enhanced. Yet certain maintenance is still necessary.
Reduce overall energy consumption
When the compressor operates at the maximum power,the central air-conditioner can generate the same output by consuming less energy.In a typical case,the energy saving department of a semiconductor manufacturer audited the condition before and after installing the condenser tube cleaning system for a 800 tons central air-conditioner and found that it saved energy amounting to 83,000 USD every year by using condenser tube cleaning system and investment payback period is 4 months.
Reduce the cost of water treatment
Since the condenser tube cleaning system enables the copper tube of the condenser to get rid of scaling,the water treatment just needs some auxiliary equipment to prevent scaling,such as cooling tower and valves,etc.An independent audit of manufacturer found that,after installing the condenser tube cleaning system,the cost of the chemicals used for treating water had reduced by 51%.In another audit of a commercial building with two 300 tons central air-conditioners,the total hardness and total dissolved solids had reduced by 51% and 53% respectively.
Prevent corrosion of condenser tube
Microbiological corrosion and centralized cell corrosion results from scaling on tube wall.Since the condenser tube cleaning system can prevent tube scaling,these corrosion mechanisms will be eliminated,thus extending the service life of the tube.
Comparison between condenser tube cleaning system and traditional descaling methods
|Performance Approach||Chemical + Mechanical Cleaning||condenser tube cleaning system|
|Cleaning of scale and fouling||Temporary cleaning||Obvious and stable effect|
|Cleaning of biological film||Temporary and partial effect||Good|
|Bacteria and algae prevention||Produce legionella and need other bactericidal chemicals||Good|
|Environmental pollution||Serious for producing high-concentration hazardous chemical water pollution||None|
|Damage to the equipment||Corrode and wear the equipment||None|
|Restrictions||The host needs to be shut down.||None|
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