At ECEX, we’re always wanting for tactics to improve plant efficiency and make sure the longest possible life out of any equipment we provide. This fascinating article was posted by Randy Simmons, Vice President of Air Answer Firm; an organization that specialize in air filtration from throughout the pond. It’s longer than the articles we often put up, however definitely worth it!
Apparently, when somebody turns into unwell from an unsafe cooling tower it most frequently isnotthe results of a company’s blatant negligence. You is likely to be shocked to listen to that typically, the trigger usually originates from an organization having not understood the need for their water treatment program to be in alignment with an efficient debris management and cooling tower maintenance program.
If the amount of debris inside a cooling tower exceeds the established biocide dosage, the demand placed upon the dosage will rapidly be consumed, having little affect on the bioactivity.
Remember: Cooling towers are highly efficient air scrubbers; something drifting previous a cooling tower is more likely to get caught in its draft and be sucked-in. When organic debris similar to seed, leaves, insects, pollen, grass, birds and their droppings, and so forth. get into the water and decompose, they create a nutrient rich setting for bacterial development, together with Legionella.
It’s important to recognise that if the amount of decomposing debris exceeds the chemical dosage’s means to offer management, the cooling tower will silently grow dangerous, even while chemical dosing continues. It is easy for companies to develop a false sense of safety that their cooling towers are secure either as a result of they are treating the water themselves or because they’ve hired water remedy companies to establish dosage ranges that ought to make sure the tower is safe. In either case, if natural debris administration isn’t in alignment with water treatment dosage ranges and made integral to the maintenance process, there’s an increased probability of the tower changing into a health and security hazard. It doesn’t matter how massive or small the corporate or cooling tower is; bacteria, including Legionella, doesn’t discriminate; it thrives in any poorly managed cooling tower!
“What is the required ratio of water treatment chemicals to debris load inside the cooling tower so as to make sure cooling tower safety?/p>
The answer isn’t as clear as the question may suggest. Natural debris is drawn into cooling towers in several concentrations depending upon location and time of 12 months. Every type of debris locations a distinct demand upon the biocides and scale inhibitors being dosed into the water; subsequently, there is no such thing as a known ratio that can hold constant for every cooling tower. Nevertheless, it is safe to say that if you don’t deploy diligent upkeep procedures that specifically call for the prevention of natural debris from entering into the cooling tower or its periodic removal, more water therapy chemicals shall be required to maintain it protected.
Including chemicals to offset poor maintenance practices however is a shortcut that will do little to stop fouling and clogging of the fill, strainers, blow-down valves, chiller and heat exchangers. This may ultimately result in health and safety issues, along with a discount in gear performance. Although the answer to thechemical ratio to debrisquestion isn’t obvious, the answer to how to maintain a safe cooling tower is crystal clear:
Keep the cooling tower free from debris and deploy a superb water treatment program and your cooling tower will function safely and efficiently.
This may increasingly sound like over simplification, but if you keep the debris out of the cooling tower, you will break the bacteria-supporting meals chain. Additionally, if you chemically deal with the water you create an surroundings non-conducive to bacteria habitation. Briefly, whenever you get rid of food and shelter for micro organism, it won’t take-up residence in your cooling tower!
Although L8 ACOP and related pointers are glorious, corporations must finally weigh the operational and financial realities of any upkeep process they deploy. Because the old saying goes “There’s multiple strategy to skin a cat If on the one hand maintenance procedures are too frequent, cumbersome or complicated, it commonly results in more downtime, misplaced productivity and higher maintenance costs. Conversely, if the intervals between maintenance are too long, it could also be more cost effective, but the condition of the cooling tower at every interval could also be lower than desirable and potentially place maintenance employees, workers, tenants and the general public at risk. So the reply lies somewhere in the center, at the point the place water therapy and debris management within the tower come together.
Companies have many options obtainable to them for managing debris; together with quite a lot of water-based filtration applied sciences and air intake filtration technology. Water filtration may also help manage water-borne and other debris after it will get into the cooling water while Air intake filtration technology is highly effective at stopping airborne debris from moving into the tower by filtering the air because it enters the system. Furthermore, air intake filtration can be utilized in glycol based mostly cooling methods and on other air-cooled condenser programs to keep airborne debris out of the coils enabling optimum cooling effectivity.
When determining what maintenance and debris management know-how to make use of, you will need to first decide what the source of debris is. If the source is water-borne, water filtration in combination with a superb water therapy programme is often the very best solution to protect the chiller and heat exchanger from scaling and fouling. If however, the supply of debris is airborne, then water filtration methods won’t stop the debris from stepping into the cooling tower (particularly the fill). As such, the very best solution for prevention debris from entering into the system by using air intake filtration know-how to filter the air because it enters the system. Air intake filtration together with a good water therapy program is highly efficient in stopping the debris that clogs strainers, blow-down valves, fill, chillers and heat exchangers.
Briefly, air intake filtration successfully protects your complete system. In excessive instances the place both waterborne and airborne debris is problematic, both air intake filtration and water filtration in combination with a very good water remedy program could also be required in order to maintain the cooling tower secure and working efficiently.
Firms that don’t take acceptable precautions and insist upon diligent cooling tower maintenance procedures not only place their employeeswell being and safety at risk, but additionally their enterprise and repute. Consider the cost of a single cooling tower associated Legionella incident:
It Doesn’t Take Rocket Science
It merely requires that firms using cooling towers initiate proactive and on-going maintenance procedures that align effective debris administration expertise with effective water testing and therapy methods. When these elements are in alignment, the result is a safe, wholesome and efficient operation.
Randy Simmons is VP at Air Solution Company, Commerce Township, MI. a producer of air intake filtration options. Go to their web site atwww.airsolutioncompany.com.
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