Refrigeration unit cooling tower two kinds of cleaning program reference

Cooling tower exposed for many years, the fan adsorption is very strong, so that a large number of sediment, dirt into the tower, a long time running will make the cooling tower slowly reduce the ability to dissipate heat, water distribution holes are easy to block, sediment and dirt is also very easy to enter the cooling water system to go, will directly affect the cooling water system of the normal refrigeration. In order to prevent the occurrence of the above situation, the cooling tower must be regularly cleaned.
Cooling tower cleaning program process
Program 1: downtime cleaning
That is, in accordance with the cleaning process sterilization and algaecide cleaning - cleaning and descaling agent cleaning - pre-film - cleaning after cleaning. This program needs to be in a state of downtime cleaning time of about 8 days, descaling rate of 95% or more.
Cleaning program: water rinsing - sterilization and algaecide cleaning - cleaning descaling agent cleaning - rinsing after cleaning - pre-film --Cleaning after cleaning.
1.Water rinsing
The purpose of water flushing is to use high-flow water as much as possible to rinse off the system of dust, sand, algae and corrosion and other loose dirt, while checking the leakage of the system. Flushing water flow rate to more than 0.15m / s is appropriate, flushing qualified exhaust system flushing water.
2, sterilization cleaning
The purpose of sterilization cleaning is to kill microorganisms in the system, and make the biological slime attached to the surface of the equipment peeled off. Drain the rinse water will be added to the system after the bactericidal algaecide cleaning, when the turbidity of the system tends to balance when the cleaning is stopped.
3, cleaning solution descaling cleaning
The purpose of cleaning liquid cleaning is to use the cleaning agent to the system scale, oxides dissolved in water rinse off. The cleaning agent will be added to the central air conditioning system with a circulating pump cycle cleaning and emptying at the highest point and the lowest point of sewage, in order to avoid the production of gas resistance and guide shower blockage, affecting the cleaning effect. Cleaning should be regularly tested cleaning fluid concentration, metal ion (Fe2 +, Fe3 +, Cu2 +) concentration, temperature, PH value, etc., when the concentration of metal ions tends to level off when the end of cleaning.
4.Rinsing after cleaning
The water rinsing is to rinse off the cleaning residual cleaning fluid and cleaning off the impurities, rinsing is to constantly open up the guide shower to make the impurities deposited in the short tube, residual liquid rinse off. Flushing is constantly testing the PH value, turbidity, when the PH value, turbidity tends to level off when the end of flushing.
5.Pre-membrane
The purpose of the pre-film is to allow cleaning in the activated state of the metal surface or the protective film is harmed by the formation of a complete layer of corrosion-resistant protective film on the metal surface.
6, cleaning after the end of cleaning
Cooler evaporator cleaning, cleaning should be the end of the host of the cooler, evaporator open cooler with a special tube through the cooler tube by tube through the rinse, due to the cooler of the water circulatory system is exposed to the atmosphere and the heat exchange temperature is high, so the cooler of the scaling condition will be more serious than elsewhere, if necessary, should be a separate external open circulatory system of the cooler to clean the descaling to ensure that the cooler of each copper pipe is smooth. If necessary, the cooler should be cleaned and descaled by a separate external open circulatory system to ensure that each copper tube in the cooler is free. High-pressure water flushing evaporator, the precipitation of impurities within the evaporator thoroughly rinsed out, if necessary, but also to the evaporator separate external circulatory system for cleaning.
Cooling tower cleaning, due to the cooling tower exposed to the atmosphere, the operation process will have a large number of sediment, algae, etc. attached to the surface of the cooling tower filler, do not clean up will be in the future operation of these dirt rinsed to the cooler caused by the cooler within the heat exchanger heat exchanger copper tube clogging, affecting heat exchange effect, so must be thoroughly cleaned up the cooling tower.
Program 2: non-stop neutral cleaning
In the normal operation of the unit under the state of the neutral cleaning agent into the cooling water, chilled water system cycle cleaning for about 30 days to release the cleaning fluid, plus maintenance agent cleaning process is over. This program cleaning time is relatively long, but can be carried out in the normal operating state of the unit, and will not affect the normal operation of the unit.
Neutral cleaning agent features:
1, neutral cleaning non-corrosive: the product is added to the central air conditioning water system does not change the pH value of the water, no corrosion damage to the metal, a complete solution to the current widespread use of strong acidic cleaning agent on the metal of the corrosion of the hidden danger, to achieve non-corrosive cleaning.
2, high cleaning efficiency: all types of scale are effective, especially for acid washing is not clean sulfate and other insoluble scale and algae biological slime can be completely removed, descaling rate of 95% or more, thus restoring the original performance of the equipment to keep the equipment clean operation.
3, simple operation: in the central air-conditioning under normal conditions, will be neutral cleaning agent into the water system running for about 30 days will be discharged cleaning agent can be completely removed from the water system within the various scales.
Neutral cleaning principle:
According to the latest theory of ligand field chemistry, the d-orbital of metal ions can be split and form orbitals with different energies under the influence of electrostatic field of some ligand compounds. When the ligand gives lone pair of electrons to form O-kin with the center metal element, if there exists an empty π molecular orbital or an empty p and d molecular orbital in the molecule of the ligand and the symmetry is suitable, the lone pair of electrons on the d-orbital of the center element can form a feedback π-bond with the ligand. feedback π-bonds with the ligand, thus forming stable coordination compounds.
Based on the above principle, the compounds that can make the d orbitals of Ca2+ and Mg2+ split in energy levels and have π molecular orbitals are chosen as π-accepting ligands. When this compound interacts with calcium and magnesium scale, it forms stable coordination compounds with Ca2+ and Mg2+d, thus destroying the molecular structure of calcium and magnesium scale, dissolving it in water, and removing it through sewage.
Maintenance
After the cleaning is completed, the cooling water and refrigerant water system is maintained with chemicals. Adding corrosion and scale inhibitor to the refrigerant water system can form stable complexes with iron, copper, zinc and other metal ions, preventing oxygen and metal ions from corroding in the water. Through chelation, inhibition and lattice distortion effect. It can prevent scale-forming salts in water from forming scale. Thus playing the role of corrosion and scale inhibition. Cooling water with algaecide, because the cooling water system is in an open state, the cycle of use will have bacteria and algae, algaecide can inhibit the production of bacteria and algae survive to play a role in regulating water quality.
Xinxiang Yukun Refrigeration Technology Co. is a production and sales of refrigeration two apparatus parts and sheet metal products, mainly engaged in condenser, evaporator, heat exchanger, reservoir, filter drier, Fin Evaporator (condenser), Stamping Parts, sheet metal parts, aluminum tubes for refrigeration, etc.

Our company has always had strict quality control standards in the market of refrigeration and heat exchange equipment, focusing on providing customised services to our customers. Not only do we have high requirements for the selection of raw materials, but we also keep up to date with the latest production processes and have high testing standards.

Our company mainly produces products for:Fin Evaporator.Fin Type Condenser.Capillary Tube. Coolant Reservoir.Plate Reinforcement Parts. Stamped Parts .Aluminum Tube.Instrument Testing Equipment.

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1. OEM or ODM can be accepted
2. Fin type: Louver or corrugated
3. Be customerized according to samples and drawings.
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They are air cooled heat exchangers for refrigeration system. They are divided in 4 group:CD,CDC,CDS and CDV.All the products have been tested on 2.8MPa air leakage,and the system is disposed of pollution,applicable to R22,R134a,R404A,R407C systems.

Our company mainly produces products for:Fin Evaporator.Fin Type Condenser.Capillary Tube.Aluminum Coolant Reservoir.Plate Reinforcement Parts.Stamped Parts.Aluminum Tube.Instrument Testing Equipment.
Supermarket Refrigeration Show Case Copper Condenser Coil
1. OEM or ODM can be accepted
2. Fin type: Louver or corrugated
3. Be customerized according to samples and drawings.
4. High quility and low price and energy saving 60% (CE, RoHS, EMC and ISO9001 certification) The CD series products can be used in Various specificantion Condensing Units .