Did you ever marvel what insects make that very loud buzzing sound in bushes during the daytime in summer? Nicely, it’s a extensively heard but rarely seen form of insect known as a cicada. The ones you hear every summer time are non-periodical, a few of them showing as adults every year despite requiring several years to develop to adulthood; however those appearing as adults in the next few years that may overwhelm your cooling towers, evaporative condensers and air handling units emerge as adults in 17 year intervals in massive and customarily non-overlapping geographic areas of the northeastern United States. Due to this separation in time and place, these species are known as periodical cicadas, and their varied widespread populations are referred to as broods. A complete of a dozen such broods are acknowledged. The one largest 17-year brood, referred to as “Brood X” [ten] is anticipated to look in sixteen states in 2004 (see figures 1 and a couple of below for state and county distribution), while one other 17-12 months brood ought to appear in 4 states in 2007, and one more in 12 states in 2008 (many the same as for Brood X). One can establish periodical cicadas by the mixture of largely black our bodies, reddish eyes, and reddish veins in their wings. If your company is in a region affected by Brood X this 12 months, you need to begin planning how you’ll deal with the potential drawback because it may have a devastating impression on your operation when you wait till it is just too late.
So What’s The big Deal?
When Periodic Cicadas emerge, their inhabitants density is huge and might exceed 1million per sq. acre (a number of a whole lot of thousand is regular). In case your facility is in a brood infested region and your cooling towers, evaporative condensers and air handling models are in or close to naturally forested areas or, surrounded by timber your system could also be vulnerable. Please notice that this otherwise harmless insect may be sucked into your gear whereas flying previous the draft zone of the intake opening as they make their strategy to the closest tree.
Location Of Your Tools Can help Decide If your System Is At risk.
Units positioned on rooftops and away from timber or, in the course of a paved space are much less more likely to encounter cicada associated problems then these which might be near the ground or surrounded by bushes or woody plants. If your facility is instantly adjacent to or, nestled away in affected wooded areas, your techniques are likely to be at risk.
How Massive Are They And When Will They Emerge?
These insects are about the size of your little finger, measuring about zero.5 inches extensive and 1.5 inches lengthy. There are three species or varieties that normally emerge combined collectively in the identical area. Their songs are quite completely different, they usually vary in common dimension. They are anticipated to emerge from the soil in early Could and June, and are lively as adults (solely males sing) for 30-50 days. Throughout their brief time above floor, they feed each day and evening by sucking the sap of trees and different woody plants. They don’t chew or chew leaves or people. The songs of males promote mating. After mating, females lay a whole lot of eggs in woody tissue, by making slits in the bark of pencil-sized twigs. Shortly after mating and laying eggs, the grownup cicadas die, leaving huge numbers of carcasses in every single place. In about nine weeks the eggs hatch and pale ant-sized child cicadas drop from the twigs to the bottom where they burrow underground and remain there for 17 years, sucking sap from the roots of plants.
Here’s What Can Occur
As one Stationary Steam Engineer, working at a serious client products manufacturer within the Cincinnati, OH space puts it, “The final time the Periodic Cicadas emerged, we had to wash our cooling tower strainers and flume a number of instances per day. If we didn’t clean the strainers, we would lose our chiller as a result of excessive-pressure circumstances and it might shutdown our cooling system. We had to keep up our cooling towers around the clock just to maintain our programs operational”.
If your facility is in an affected space and you don’t anticipate emergence of the Cicadas, it could affect your annual upkeep funds and have an economic affect on your online business. Here’s how:
Cooling Towers & Evaporative Condensers:
– Clog Cooling Tower Fill – decreasing airflow.
– Overwhelm sump water rising organic content and increasing micro organism count.
– Increase water remedy chemical consumption and related cost.
– Clog strainers, cut back flow charge and influence chiller effectivity.
– Clog solenoid blow-down valves in the open place, leading to increased make-up water and water therapy chemical consumption
– Clog heat exchangers reducing flow charge and heat switch efficiency
– Could cause production downtime, lost productivity and missed shipments.
– Improve maintenance value.
Air Dealing with Units
– Clog Internal Filters
– Load Intake Air Pathways with insect debris
– Improve Filter Adjustments
– Reduce Inside Air High quality
– Cause Extreme Service & Upkeep Cost
In short, Periodic Cicadas can cause real havoc to corporations that are not prepared.
How you can Forestall Hassle
1. To begin with you need to find out in case you are located in an affected region – When you had an issue the final time they emerged and there has been little development or disruption to the soil or forested area round your operation, then you’re prone to have trouble once more (See Fig. 2).
2. If you’re in an affected area, It’s suggest that you just determine your most critical systems and set additional upkeep dollars aside specifically for protecting and maintaining those techniques (programs that support production or other revenue generating operations are key) – anticipate additional upkeep, service, elevated water remedy chemical consumption, frequent filter adjustments on air handlers, overtime or investment in preventative expertise similar to Air Intake Filters that stop the insects and debris from getting into your systems).
Three. Research your alternatives. Water filtration and air intake filtration are two good options. Depending upon the level of protection you’re in search of, every present varying degrees of safety – Water filtration will enable you to to handle the insects and different airborne debris after it has entered the cooling tower and will protect down stream techniques together with chiller and heat exchanger; however, water filtration does little to protect the cooling tower where many of the maintenance can be required. Air Intake Filtration Methods that mount to the outside of the cooling tower or different air intake openings (as in chillers and air handling models) will filter the air as it’s getting into the system stopping the debris at the purpose of entry and protecting your total system. Long after the Cicadas have come and gone, use of Air Intake Filters will present long run safety against annual airborne debris (together with: cottonwood seed, small & large insects (e.g., May Flies / Fish Flies, Lady Bugs, Cicadas), leaves, pine needles, paper and wrappers, harvest chaff, development debris, birds and extra).
Anticipation and Prevention is vital
Knowing if you will be affected and growing a plan of motion is step one in avoiding influence to your operation. Taking a preventative approach is often extra price effective than merely reacting when the issue happens and can literally save you 1000’s of dollars whereas keeping your operation running smoothly.
What Not to Do
When airborne debris turns into a critical drawback, the natural tendency is to look for something to cover the intake opening to forestall entry of the debris. Never use window screen, roll filter media or mesh purchased from a hardware store to cover air intake openings on cooling towers or, evaporative condenser models; these supplies aren’t designed to permit proper airflow and may drastically enhance static strain, improve power price and impede cooling effectivity. When using air intake filtration it should provide less than 1/10inch drop in static stress (as measured in inches H2O). Air intake filtration specifically designed for use on cooling towers and evaporative condensers and chillers is very recommended.