Blog Listings

Cooling Tower Passivation Explained

Posted by Micah Thomson on Jun 13, 2017 11:00:00 AM

New evaporative cooling systems, typically cooling towers, ammonia condensers and fluid coolers are manufactured with several options for materials of construction, each with their own benefits and draw backs. Hot-dipped galvanized steel (steel that has been coated with zinc) has become the most common choice for construction as it provides structural strength at a relatively low cost and enhanced corrosion resistance over that of uncoated steel. However, the zinc coating is not well-suited for locations that are in constant contact with water, and requires passive oxidation to be protected from corrosion when exposed to cycled cooling tower water. Passivation is the process by which this zinc layer is oxidized slowly under controlled conditions to produce a passive layer of zinc oxide on the exterior surface of the coating, which provides superior resistance to corrosion.

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Topics: Cooling Water Treatment

Legionella Educational Series: Understanding Building Risk Factors

Posted by Stephen Betts on May 19, 2017 11:00:00 AM

Legionella bacteria live in water and are found in natural aquatic environments.  However, the artificial environments within building systems can provide conditions that encourage the bacteria’s growth, such as ideal temperature, water stagnation, and presence of biofilm. Various water systems have been the source of legionellosis cases including potable water systems, cooling towers, spas, and other artificial systems. Understanding building risk factors is an important part of preventing Legionnaires' disease.  To cause harm, the bacteria must be present and grow in water, the colonized water needs to be transmitted to a person, and that person must be susceptible to infection. 

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Topics: Water Safety

4 Common Issues in Feedwater Tank Design and Operation

Posted by Peter Miller on Apr 10, 2017 11:00:00 AM

Boiler water treatment is critical to ensuring your boiler is operating as efficiently as possible and no proper water treatment program is complete without a thorough understanding of the feedwater setup.  A crucial step in preparing the feedwater for the boiler is preheating and deaerating the water in a separate vessel directly upstream of the boiler. 

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Topics: Boiler Water Treatment

World Water Day - How to Apply the 3 Pillars at Your Facility

Posted by Patrick Kehoe & Chris Ford on Mar 7, 2017 11:00:00 AM

                                                              Breaking the Ice
Water. H2O. You know how important it is but what you might not realize is how scarce it really is. Notice the three blue spheres in this image. The large sphere on the left represents the volume of all of the world’s water. The smaller ball to the right represents the volume of the total fresh water on the planet. Now, can you see that really small blue dot below that? That tiny spec represents the total volume of fresh water that is readily available for the entire world. Approximately 56 km (35 miles) across, this tiny sphere represents all of the clean, usable water on the planet. 

That’s not a lot of water.

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Topics: Sustainability

4 Things Every Purchaser Should Know About Water Treatment

Posted by Christa Brown on Feb 14, 2017 11:00:00 AM

Water Treatment can be a tricky category to purchase.  I’ve spent much of my career trying to explain the nuances.  There are many different offerings in the marketplace, and on the surface, the costs can appear to span a very large range.  So let’s get started with the basics.

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Topics: Purchasing

Steam Humidification: Choose Your Own Adventure

Posted by Louis-Philippe Beauchemin on Jan 10, 2017 11:01:50 AM

The relative humidity level in our built environments is critical to prevent occupant discomfort and/or damage to building materials. Choose to read the quick high level summary, or test your knowledge by following this interactive blog that delves deeper and deeper into the details of the steam that we inject into our air.

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Topics: Boiler Water Treatment

Point-of-Use Filters for Control of Microorganisms in Building Water Systems: 5 Things You Should Know

Posted by Stephen Betts on Dec 19, 2016 11:12:38 AM

Building water systems can be the source of illnesses such as Legionnaires’ disease and others caused by waterborne pathogens.  Point-of-Use (POU) filters can play an important role in managing this risk, and may be a valuable part of a comprehensive water management program. 

 

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Topics: Water Safety

A Guide to Waterside Inspections

Posted by Micah Thomson on Dec 7, 2016 10:30:00 AM

Performing regular waterside inspections of your critical system equipment is an important part of a successful preventative maintenance program. As we enter the holiday season, many systems may be temporarily shut down, providing a perfect opportunity for waterside inspections.

Visual inspections provide an indication of the overall health of your system and validate the results of your water treatment program. It is crucial to catalog inspection reports to allow you to determine if the current condition indicates equipment status is unchanged, improving or degrading.

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Topics: Boiler Water Treatment, Cooling Water Treatment

Is My Softener Wasting Salt?

Posted by Mark Davey on Nov 7, 2016 4:33:20 PM

Water softeners are commonplace in industrial and institutional settings. These units utilize salt to ideally eliminate the hardness of the incoming water. Since salt usage is essential for softener function and has associated environmental and financial costs, it is important for its consumption to be monitored and optimized. 

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Topics: Pre-Treatment

How to Prepare for Seasonal Chiller Shutdown and Lay-Up

Posted by Andrew Young on Oct 11, 2016 7:49:40 AM

The leaves on the trees are beginning to change color and temperatures are fluctuating day to day.  We have officially entered the cooling shoulder season.  Temperatures this time of year result in a period of intermittent system operation followed by winter shutdown.  While control of water chemistry is vital to minimizing HVAC system corrosion and preventing deposit formation during the cooling season, additional factors begin to play a critical role during the shoulder season and winter months.

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Topics: Cooling Water Treatment

Back to Basics: Understanding Your Water Treatment Report

Posted by Luke Bobel on Sep 6, 2016 11:14:30 AM

As we enter September and the first week of school for many, it’s a great time to talk about report cards. Teachers use report cards to evaluate a student’s overall performance, and to communicate with parents regarding their progress.  Much like a report card, your water treatment report summarizes the status of your systems, the work performed on-site, and most importantly, it looks to improve your system’s overall performance by highlighting areas in need of attention.  Through working with your water treatment expert to maintain results, rectify existing system issues, and prevent future equipment failures, you are ensuring the long term success of your water management program and ultimately extending the lifespan of your facility’s infrastructure.

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Topics: Water Management

The Rising Costs of Water

Posted by Mathew Bonarek on Aug 9, 2016 9:51:15 AM

The value of water is often overlooked and taken for granted due to its abundance. Although water makes up 70% of our planet, only 2.5% of this is fresh water, and of this scarce supply, less than 1% is freely available in non-glacial forms. The demand for water grows in parallel to the competition for access to clean potable water. Meanwhile, failing infrastructures, combined with a continuous increase in our global population and decreasing supply of groundwater, are driving up the costs of water. Consequently, water pricing for both the industrial and residential sectors are on the rise and as a result, our sustainability hangs in the balance.

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Topics: Water Management

Physical Water Treatment Devices: Understanding and Selecting ‘NCDs’

Posted by Micah Thomson on Jul 20, 2016 11:10:23 AM

The goals of cooling water treatment systems are to minimize corrosion, inhibit scale formation, control biological activity, avoid fouling, and minimize water consumption.  Physical water treatment devices, often referred to as non-chemical devices or NCDs may target all or some of the same requirements as a traditional chemical water treatment program.

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Topics: Cooling Water Treatment

Summer is Heating Up - Top 5 Ways to Save on Cooling Tower Bleed

Posted by Patrick Smith on Jun 21, 2016 9:43:21 AM

Cooling towers work by taking advantage of heat lost to the atmosphere when water evaporates. As we’ve just reached the summer solstice, it’s officially peak season to find ways to improve your tower performance. Whether your cooling tower is used for HVAC cooling, cold storage, or an industrial application, reducing the amount of bleed can reduce your water consumption and chemical use

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Topics: Cooling Water Treatment

What's Inside your Water Softener: A Closer Look at Resin

Posted by Claire Beauregard on May 17, 2016 11:00:00 AM

Water softening is a process in which water flows through a bed of resin to exchange the hardness ions, calcium and magnesium, for sodium ions.  When the resin has reached its capacity for holding hardness ions, the water softener initiates a regeneration cycle.  During this cycle, a sodium chloride brine solution flows through the resin and effectively reverses the process by exchanging sodium ions for hardness ions, and flushing the hardness ions down the drain.

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Topics: Pre-Treatment

Big Data in Water Treatment: Challenges & Opportunities

Posted by Peter Miller on Apr 26, 2016 11:13:30 AM

The Power of Data

Modern steam and cooling plants have objectives that go beyond the primary goal of producing heating and cooling reliably.  Within the context of business, the goal is to also achieve the Least Cost Operating Scenario (LCOS).

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Topics: Water Management

Successful Cooling Tower Start-Ups in 5 Simple Steps

Posted by Mark Bertulli on Mar 15, 2016 8:45:06 AM

Many HVAC evaporative cooling systems are idle or off throughout the winter months, and are often drained to prevent freezing. These extended shutdowns provide excellent conditions for deposits to form and bacteria to grow.

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Topics: Cooling Water Treatment

5 Steps to Increase Steam Boiler Efficiency

Posted by Joseph Ham on Feb 19, 2016 11:58:33 AM

Close to 40% of all fossil fuel burned by industry is consumed in steam production.  Simple steps can have a large operational impact on the cost of fuel, water, treatment, and labor.  The chart shows a typical breakdown of these costs where fuel consumption is the primary expense.

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Topics: Boiler Water Treatment

4 Things to Know for Increasing Steam Boiler Deaerator Effectiveness

Posted by Joshua Ince on Jan 18, 2016 4:18:11 PM

1 – Why should you have a deaerator?

Raising steam for your facility requires water, and depending on the steam plant’s size and design, the volume of feedwater needed can be small or quite large.  Some applications allow for steam condensate to be recycled back to the boiler which is reused as part of the feedwater, with the rest coming in as fresh water, called makeup.   The makeup water comes from your local utility or well water source.  It is often cold and contains many dissolved gases, with oxygen being the most prevalent.  Regardless of the volume of condensate returns you have, the makeup water needs to be conditioned before it can be used as boiler feedwater.  The conditioning requirement for the boiler's feedwater quality must achieve 4 goals, as outlined in both the 2015 ASHRAE Handbook chapter on Water Treatment , and the ASME Consensus on Operating Practices for the Sampling and Monitoring of Feedwater and Boiler Water Chemistry in Modern Industrial Boilers (CRTD-81).  These goals are:

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Topics: Boiler Water Treatment

Water Safety Plans Can Mitigate Risk During A Water Crisis like Flint Legionnaires' Disease Outbreak

Posted by Patrick Racine on Jan 15, 2016 11:43:03 AM

The water crisis in Flint is an unfortunate situation, but should not initiate knee-jerk reactions on the part of facility managers.  Let this serve as an important reminder that a proper Water Safety Plan is vital to the protection of humans in buildings.  Follow the six steps below to develop your facility specific Water Safety Plan and ensure building occupants are safe from Legionnaires' Disease.

STEP 1:  Water Safety Team

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Topics: Water Safety

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DISCLAIMER: All content provided on the Eldon Water blog is for informational purposes only.  Eldon Water Inc. makes no representations as to the accuracy or completeness of any information on this site or found by following any link on this site.  Because of the generality of this update, the information provided herein may not be applicable in all situations and should not be acted upon without specific legal and technical advice based on particular situations.