Weak current College】 【conditioning chiller water treatment problems.

Urban construction with each passing day. Modeling different, beautiful building, Church, Museum, the, sprang the erection on the motherland, for our work and life provided a venue. They are in the middle of a large public buildings generally use central air-conditioning chillers for summer cooling and heating in winter. Emerging property management ranks in maintenance and central air conditioning daily administrative work, generally used by water treatment company contract type. Throughout the whole country of central air-conditioning control, discovery management very good, there are different degrees of problems, the main issues addressed are as follows:
First, because of the design department design of unreasonable problems many units of the air conditioning running various problems can occur, analysis, and a substantial portion is due to the design department to design, and even design errors.
Common problems of unreasonable design include the following:
1. in order to scale, in the water treatment system has designed a magnetic water for magnetic water species and variety, called electronic descaling Miriam, high-frequency apparatus and so on water, in short all that water molecules get magnetized, and polarized water molecules with strong electronegativity, calcium and magnesium ions, thereby delaying the time scaling, reach the purpose of the scale. With strong electronegativity of water molecules can be worn furring and rust. Therefore some manufacturers say the product has anti-scaling and corrosion, descaling, derusting. Indeed, magnetic water has a positive effect of these. However, if the installation of the magnetic water quantity and location of the installation design is reasonable, it would have severely corrosive water system, it's such a negative effect outweighs positive effect. On air conditioning equipment and water system to cause serious hazards. For example: a building of imported central air conditioning, design departments in the Shui system designed and installed for about 10 more magnetic water, of which only frozen water system is installed ten magnetic water, there is no longer in the running of other water treatment methods. The device is only running one and a half years raises serious corrosion. Testing water samples, copper ions in water as high as 50 few mg/l Fe up to 200 mg/l.
To address the corrosion problem, experts on site diagnosis, when from the chilled water system of circulation pump inlet side sampling, we found a group made up of Red rust with water, in the end of the tapered cylinder 200ml about 8mm thick into flocks of rust, corrosion of visible water system is quite serious. Look up found 10 several magnetic water are in work, let the staff immediately chilled water system to switch off all magnetic water, cooling water system can only keep a job. And to tell, this is the system in the event of a serious source of corrosion of corrosion. And recommend them to take the series water treatment chemicals for anti-corrosion anti-scaling. From the end of 1999 the central air conditioner has adopted a series of water treatment chemicals, enhancing the operation of governance. Dosing, the equipment is neither long scale without long rust. Testing water samples: copper content purported 0.02mg/L, iron content purported 0.5mg/L.
Experts suggest you do not install a central air conditioning system, magnetic water magnetic water should be installed in the tea furnace and bath furnace.
2. in the cooling water system installed vertical Remover at present throughout the chiller air conditioning installed Remover is inverted Y glyphs, mounted on the air conditioning unit entrance on front risers, pour Y glyphs on the risers, Remover can only capture device run at the beginning of construction debris, to prevent these garbage into the condenser. However, this kind of inverted Y shaped strainer cannot capture the day-to-day running of small scale and rust, thus causing the condenser scale, mud and other impurities. The correct approach is the condenser inlet before the installation of a vertical remover, the cooling water system in various impurities trapped in a strainer.
3. air cooling and freezing water outlet side design quickly drain valve at present many units of the central air-conditioning cooling water-side plates or chilled water-side plates are not installed quick sewage valve, some units with sealing plug up those outfall, in fact, this is very wrong, easy to make the air conditioner product mud product impurities, impact heat efficiency, also result in the annual regular cleaning of the condenser. The correct approach is the cooling water system each week from the condenser outlet side according to "three open, three customs law" sewage 2 ~ 3 times on freezing water system should weekly press this method sewage.
4. in the cooling tower makeup water pipe and chilled water fill water tanks of water on a water meter installed. Currently, a significant part of the central air-conditioning cooling water and chilled water make-up water tap water meter is not installed on, so that users do not know how much water is there the Communist system, do not know how many tons of daily supplement, to run the governance of water brings a lot of trouble. Because the central air conditioning water treatment generally use chemicals, you must press the water supply and water dosing system, so this second block water meter is not small.
5. it is best not to do with softened water conditioning of water in 1987 found that the sodium ion exchange regeneration of waste on groundwater pollution caused permanent. In each of a ton of softened water is discharged to the underground 2 ~ 5 kilograms of salt. Due to the low pressure boiler water quality standard GB1576, almost all of the industrial boiler softened water have been used as boiler feed water, there are more than 9000 in Beijing, including boiler rooms on the scale of boiler house with more than 2800, every year to thousands of tons of salt, ground drainage, causing the pollution of groundwater, result in permanently suffering from hypertension, heart disease, increased cancer risk. Consequences of the terrible, the United States has restrictions on the use of sodium ion exchanger. The above mentioned, visible using softened water great harm, it is recommended that the design department in the design of central air-conditioning, don't use feedwater softened water do. One is to reduce the pollution of groundwater, and also to central air conditioner itself reasonable. Since softened water corrosion protection not only scale, corrosion is greater than tap water, use soft water do water will cause corrosion of chilled water system, ultimately also dosing antiseptic. General water treatment chemicals should be both anti-scaling and corrosion. So then, selection of softened water is water that is not a good way.
Second, run the control in points as the saying goes "third pharmaceutical, seven management", for central air conditioning run governance indicators and methods are also very important. Do a central air conditioner run control of water treatment,Simply in order to scale and corrosion, sterilization, and algae, extend equipment life.
1. anti-scaling and corrosion for anti-scaling and corrosion, should use advanced water treatment chemicals, to ensure that the device does not scale, corrosion-free.
2. disinfection, and algae central air conditioning and refrigeration systems generally run in hot summer, not only inside the cooling tower trays easy breeding bacteria and algae. Thus, in the South most units in regular dosing biocides. Currently available commonly used biocides has oxidizing, iron systems have a corrosive effect, long dosing will causing corrosion of the system, the user selects the biocides to focus on. Biocides are passive approach, if we choose to corrosion inhibitor, the select can inhibit the growth of bacteria and algae, fungicides to multiple feature so that you can not vote or little biocides. While the water system of the innocent, non-corrosive, nor long bacteria and algae, the entire water system and no impurities so that operation of power-saving 20 per cent.
3. control of chilled water air conditioning system of PH value of water system both copper and iron, so that the two metal are protected, this should control system water pH in 9 ~ 9.9 because iron passivation at pH 9-13, iron-alkaline, alkaline copper afraid, when pH reached 10, copper began in corroded, copper and iron are side by side in the water system, strictly control the pH in 9 ~ 9.9. It also help to curb the growth of bacteria and algae. Good air conditioning water treatment is not difficult, as long as the design and installation, select Advanced, run control chemicals, can satisfactorily completed central air conditioning of water treatment.