Can Water Treatment Reduce Facility Operating Costs?An introductory presentation for Property Managers, Administrators, and Owners on the

essentials of HVAC Water Treatment

BOMA Chicago Brown Bag Lunch Hosted by Global Water Technology, Inc.

Day, Month, Day, Year 12:00 – 1:00 p.m.

About Global Water Technology, Inc. (GWT) Introduction

• Regional Water Treatment/Management firm specializing in cooling towers, steam boilers, closed systems, and consulting services.

• Green Conscious & Exploring Water Conservation Strategies• 27 + Years of Incorporation• Based in Orland Park, IL• BOMA Chicago Member, 15+ Years

Presentation Team

• Michael Byerley, President• Paul Yudys, Senior Account Executive, Main BOMA Contact• Brian Burgess, CWT, Account Executive, Speaker

Presentation Goals

• Introduction into the theory/basics of water treatment• Understanding the cost relationship between water treatment and other

operational costs such as energy, fuel, water, sewage, and HVAC repair/maintenance

• Discussion of minimum standards for water treatment – equipment and safety

• Discussion of the recently passed ASHRAE Standard 188 and Legionella Bacteria

• HVAC Equipment that Uses Water as a “Heat Transfer Medium”

• Steam Boilers, Cooling Towers, Chillers, Hot Water Boilers, RecirculatingSystems

• Air Handlers and Condensate/Drip Pans

• Domestic/Potable/Drinking Water

• Ejector Pit and other Misc. Drain Solutions

• Consulting Projects

• Legionella Management

Where In your buildings do you need to know about water treatment?

Basics of Water Treatment

• Water treatment - the management of water used in process heating and cooling systems to reduce the harmful effects of scale, corrosion, or microbiological fouling.

• Universal Solvent

• Impurities- Ca, Mg

• Microbiological Concerns

Basics of Water Treatment

• Scale:• Inverse solubility • Becomes less soluble as temperature increases

• Readily forms on heat transfer surfaces with a tendency to form on the hottest point in systems (condenser tubes)

• Corrosion• Destroys system metals and contributes to deposits

• Microbiological Growth• Contributes to corrosion rate

• Inhibits heat transfer/efficiency of system

• Potential disease to humans

• Fuel and energy costs continue to rise

• Contamination increases expenses

• Scale and deposits insulate

• Most applicable systems: Steam Boilers and Cooling Towers/Chillers

Fuel and Energy Costs Directly Relate to Water Treatment Efficiency

• Scale, corrosion, and biological fouling can directly increase water and sewer costs

• Sewer rate is directly proportional to make up water

• Deposits and “slime” accumulation will reduce heat transfer efficiency and cause inefficient use of water

• Water meters – on make up water and blow down or discharge points are necessary to properly manage usage

• Large enough systems can investigate evaporation credits

Sewer and Water Costs Have Increased

General Tips for Steam Boilers• Pre-Treatment:

• Water softener• Reverse osmosis• Dealkalizer• Deaerator

• Automated Skim Blow Down

• Data Collection• Ensure proper meters (water, fuel, steam, etc …)• Engineer and provider tracking via logs and on-line data management software

• Automation & on-line probes

• Dual biocide (3 treatment products)

• Biannual tower cleaning (sump and fill)

• Make up and blow down meters

• Proportional feed of chemistry

• Remote on-line monitoring

• Data Collection

Cooling Tower Tips

• Filtration

• Pot feeders

• Make-up systems

• Glycol %

• Corrosion Coupon Racks

• Water meters

General Tips for “Closed Loops”

Switching to a Concentrated Product Can Save on Delivery and Be Safer• Safety and Delivery

• Hands free treatment delivery

• Solid chemistry alternatives https://www.youtube.com/watch?v=iV2r3Q5HEZMLiquid concentrate alternatives

• Chemical Storage• On-line vs. inventory storage

• Dual walled containment vs. spill decks

• Operator Training

• Infrastructure Automation -High ROI

Evaluating Performance Should be Standardin Your Building’s Water Treatment Plan

• Annual Reviews

• Water Usage Studies

• Corrosion Coupon Results

• Data & Trend Evaluation – Online reporting

• Efficiency Evaluations

• Training

• Innovation & Infrastructure Improvement

• Consulting on Projects

• Goals and Achievements

• Understand overall costs• Lowest contract is not necessarily lowest cost

• Chemical company vs. service provider

• Contract vs. Pay-Per-Drum

• What should be included in a service agreement?

Evaluating Competitive Bid Situations Should be All-Encompassing

• ASHRAE Standard 188-Legionellosis Risk Management for Building Water Systems

• Establishes minimum legionellosis risk management requirements for building water systems.

• Per ASHRAE “essential for anyone involved in design, construction, installation, commissioning, operation, maintenance, and service of centralized building water systems and components.”

• Adopted by New York State after July 2015 outbreaks, might be law in Chicago some day

• Basics include establishing a team, a risk assessment, and a procedure for dealing with legionella potential water systems

ASHRAE-188 Introduction and Current Legal Status

ASHRAE 188’s Goal is to Encompass all Buildings At Risk of Having a Legionnaire’s Outbreak

ASHRAE 188 is a standard for all buildings with:

• Cooling Tower(s)

• Whirlpool/Spa

• Ornamental Fountain, Mister or Humidifier

• Centralized Water System

• Greater than 10 Stories

• Healthcare Facility withOvernight Patients

• Houses Immune Compromised Patients

• Senior Care Facility

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