controlled hydrodynamic cavitation - vortex...

CONTROLLED HYDRODYNAMIC

CAVITATION

Chemical-Free Cooling Tower Water Treatment System

A Marmon Water/Berkshire Hathaway Company

CHC Technology History !! Developed by Cliff Ashbrook and licensed to Lancer

Corporation in the early 1990’s. !! Ballistics observations

!! AW Chesterton licensed the technology from Lancer in 1998.

!! VRTX established as a company in 2003.

!! Liberation Capital invests in VRTX in 2011.

!! EcoWater Systems acquires technology IP in 2014 and renames the business EcoWater CHC.


Standard Features

Controlled Hydrodynamic Cavitation Reactor Remote Monitoring Pump Inlet Basket Strainer Two-Stage Automatic Filter System Conductivity Control Toroidal Conductivity Probe Integrated Corrosion Rack Combined Motor Starter with Power Disconnect Basin Suction Manifold Basin Sweeper System

CHC B-Series Mechanical Water Treatment Systems for Evaporative Cooling

Optional Features

Copper/Silver (Cu/Ag) Ionizer Power Economizer SCADA Interface (Bacnet IP) Make-Up Flow Meters Blowdown Flow Meters pH Monitoring


!!Cavitation!

Metal Destruction from Uncontrolled Cavitation! CAVITATION BUBBLE COLLAPSE!

cav.i.ta.tion \ kav' i ta' shun \ n [1. the rapid formation and collapse of vapor pockets in a flowing liquid in regions of very low pressure.


Shear stress = 150,000 psi Temperature rise = 10,000 F

Inside the CHC Cavitation Chamber

"! The opposing water streams collide in the cavitation zone, causing millions of high energy, micro-sized cavitation bubbles to rapidly form and collapse. This stresses any bacteria and forces calcium carbonate to form in the bulk water.

#! Water from the sump is pumped under high pressure into the cavitation chamber, where it is forced to rotate at high velocity through precision nozzles.

$! The treated water exiting the cavitation chamber is returned to sump where the precipitated calcium carbonate is removed by the integral filtration system.

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Controlled Hydrodynamic Cavitation

Scale Control Changes water chemistry to precipitate calcium carbonate scale

Cell Lysing Cavitation kill biologics by breaking down cell walls

Corrosion Control Vacuum strips CO2 which elevates pH creating a low corrosion environment

Cavitation Zone Chemistry

Implications

Notes: 1.! Chemical treatment tries to

keep hardness in solution. CHC removes hardness from the water.

2.! Chemicals maintain delicate balance between scale control and corrosion

3.! High temperature accelerates CaCO3 precipitation

Scale Control Using CHC 1 CO2 Stripping: High-vacuum exceeds

partial-pressure of CO2; CO2 is vented

2 Hardness Removed (!): As CO2 vents, reaction shifts right, soft, powdery CaCO3 precipitates and is filtered :

Ca(HCO3)2 (CaCO3 + H2O + CO2 Dissolved Precipitate Gas (vented)

1.! Automatic Scale Control…removes requirement to maintain delicate chemical equilibrium

2.! Cycles of Concentration Increase – resulting in less water usage

3.! Towers run cleaner – resulting in better heat transfer and lower energy usage

Notes: 1.! With CHC, you cannot

over treat.

Watch CHC Remove Calcium Scale

Time lapse video - water becomes cloudy as scale precipitates


Why is Water Savings Important? !! HVAC: 450,000+ towers in the US

!! Ammonia Refrigeration: 90,000+ condensers

!! Cooling Towers consume ~50% of fresh water in the US or ~200,000,000 gallons per day!

!! On average CHC will reduce water consumption by 20% --- we have already saved over 1,000,000,000 gallons of water!


Improves Efficiency

Lowers Costs

Minimizes Factors that Reduce Efficiency 1.  Controls scale 2.  Prevent biological fouling 3.  Inhibits corrosion

Reduces Total Cost of Ownership 1.  Eliminates chemical costs 2.  Cuts water & sewer usage 3.  Improves energy efficiency 4.  Minimizes maintenance

Economically Achieves ‘Green’ Initiatives 1.  Eliminates hazardous chemicals 2.  Improves water conservation and reuse 3.  Provides energy savings 4.  World-class bacteria control

Proven Technology

Over 15-years of successful, chemical-free cooling water treatment world-wide

Meets Environmental

Sustainability Goals

Why is Excellent Water Treatment So Important?

Energy

COLD HEAT

$$$

Energy



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COST OF SCALE



Energy

COLD HEAT

$$$$$

Same Load Scale Impact


Energy

Effect of Scale on Energy Consumption


Restores Energy Efficiency

Condition at startup After six months of treatment


CHC Solution

!! Cooling water drawn from sump and treated by CHC Cavitation Chamber. !! Side stream

!! Sweeper nozzles direct precipitated scale and other debris to filtration intake. !! Manifold design critical

!! Maintenance-free filters maintain a “pool clean” highly energy efficient system.

!! PLC Controller – all data available for system interface

!! Wireless remote monitoring


CHC Solution

Cavitation Chamber

Dual Pumps for improved

energy efficiency

PLC with Remote

Monitor & Control

Torroidal Conductivity

Control

Motorized Actuated Valves for

remote control Self-contained stainless skid


Filtration

Centrifugal separator

Self-cleaning screen

polishing filter

Basin sweeping Dual drains for blow-down

reuse


Water & Sewer Savings

!! Average customer reduces make-up water 20%

!! Average customer eliminates 50% of blow-down

!! Because CHC is chemical-free, blow-down may be repurposed for other applications, (i.e. irrigation) saving significantly more water!


Average customer reduces make-

Average customer eliminates

Because CHC is chemical-free, blow-down may be repurposed

irrigation) saving significantly


Average customer reduces make-

Because CHC is chemical-free, blow-down may be repurposed


Water Savings

Examples of Water Savings Through !Increased Cycles of Concentration!

State! Tons! System Gallons!

Chemical CoC!

CHC! CoC!

Water/Sewer Savings!

% Savings-Makeup!

% Savings-

Blowdown!

VA! 730! 2,610! 4.5! 7.0! 991,408 Gallons! 18%! 40%!

FL! 850! 4,000! 2.0! 4.0! 5,400,000 Gallons! 40%! 73%!

ND! 4,500! 80,000! 3.5! 5.8! 10,830,000 Gallons! 15%! 50%!

CoC = Cycles of Concentration


Legionnaires’ Disease Legionnaires' outbreak in UK leave 1 dead and 15 ill Published June 05, 2012 Associated Press

LONDON – Health authorities in Scotland say one man has died and 15 people are in critical condition in hospitals after an outbreak of Legionnaires' disease in the Edinburgh area. NHS Lothian, the local health authority, says it is investigating another 15 suspected cases. It said Tuesday that the man who died was in his 50s and had underlying health conditions.

Health officials are investigating the source of the outbreak. Legionnaires' disease is contracted by breathing in small droplets of water contaminated with Legionella bacteria. The bacteria can end up in artificial water supply systems, including air conditioning systems, water services and cooling towers.

http://www.foxnews.com/health/2012/06/05/legionnaires-outbreak-in-uk-leave-1-dead-and-15-ill/#ixzz1x1rPFIYj


World-class Bacteria Control !! CHC approved for

Legionella control under world’s most strict standard, L-8 in the UK.

!! Biologics adapt to traditional chemical treatment. However, they cannot adapt to CHC.

Biological Control Using CHC!

**Biological Cells Do Not Build Tolerance to CHC**!

cannot adapt to CHC.


Eliminate Chemicals

!! Save money !! Eliminating direct costs !! Reducing reporting &

management !! Reduce Risk

!! System failure from chemical overtreatment "!System damage is more

common than you think! !! Environmental, Health &

Safety

System failure from chemical


Meet Environmental Sustainability Goals

No Hazardous Chemicals

Water Savings Water Reuse* Energy Savings

*Additional Permitting may be required for Blowdown Reuse

CHC Qualifies for USGBC LEED-NC Innovation and Design (ID) Credit 1.1.

An additional point may be earned (Water Efficiency 1.2) by utilizing cooling tower blowdown for landscape irrigation purposes.



Alcoa Aldi AmeriCold ASDA Baxter CB Richard Ellis Coca-Cola Costco Cuisine de France Eaton Genetech General Mills

Georgia Pacific

Gerdau Ameristeel

GlaxoSmithKline

Hill's Pet Nutrition

Johnson Controls

Keystone Foods

Kimberly-Clark

Lineage Logistics

Mars

Miller-Coors

NorthStar Foods

Novartis

Pepsi

Pfizer

Renault

Rich's

Royal Ahold

Sara Lee

Schwan's

Shiner Bock

Siemens

Smithfield Foods

Sysco

Tropicana

Tyson

Unilever

US Cold Storage

US Foodservice

Vornado Realty

Wal-Mart

Whole Foods

Yahoo

Yakult

Unsolicited Testimonial

Excerpt from email sent to Global Network of locations regarding their CHC experience

!! Lu***** CDC was the first site to have CHC fitted were one of the two condensers was fitted with CHC and the other fitted with a conventional automated chemical water treatment system. When comparing the two systems it was noted that the cycles of water were!reduced, the condenser pond water was clear!and tubes were cleaner on the condenser fitted with CHC compared with the condenser fitted with the conventional chemical water treatment system.!

!! Both condensers at Lu***** CDC where put onto CHC and it was noted that after an initial period the cycle of water was!reduced, the!pond water became clear, and the tubes lost scale on the condenser that was initially fitted with the chemical system.!


Case Study: Food & Beverage


Situation •! 15,000 tons of ammonia refrigeration, one of the

largest refrigeration systems in North America.

•! 18 evaporative condensers responsible for keeping 70 million gallons of fresh orange juice cold.

•! CHC installed concurrent with overall system start-up in 2002

•! System still providing excellent treatment today.

3 x v250 gpm units Automated Filtration


Results •! Completely eliminated on-site hazardous

chemicals/biocides for treating towers •! Improved worker Safety

Improved Food Safety

•! CoC increased from 6 to 9 •! Saving 5MM gallons of water per year

•! Reducing sewer discharge by 5MM gpy! •! 7MM gpy of blowdown water available for reuse

Water Savings

Effective Tower Treatment

1.! Corrosion: corrosion rate significantly below limits set by Cooling Institute for stainless and galvanized steels

2.! Biologics: In control with lower counts than prior chemical treatment

3.! Scale: In control … and towers actually became cleaner


Case Study: Cold Storage

•! New Orleans Cold Storage, America’s oldest Cold Storage Company.

•! Battling scale in a 1,000 ton ammonia system’s evaporative condenser using traditional chemical treatment.!

•! Planned to expand and wanted to avoid scale issues with their new condenser, while cleaning up the scale in existing equipment.


Results

•! Scale was removed from the old condenser after just four months.! The tubes in the new condenser continue to look new.!

•! Cycles of concentration increased from 2.0 to 4.0 after CHC installation.! The customer is now saving 8.7 million gallons of make-up water annually at this facility alone.

•! Customer has installed four additional CHC systems at three other facilities.

Water Savings

Restored Energy Efficiency

Established Best Practice


Case Study: Hotel & Convention Center

•! Two separate cooling systems at hotel & convention center in San Marcos, TX.

•! Scale issues were so prevalent in both towers that de-scaling/cleaning was required from outside vendor on quarterly basis.

•! Facility was using acid in cooling water treatment program with evidence of corrosion in engine room.


Results

•! Scale gradually being removed from interior heat transfer surfaces of both cooling towers.

•! Recirculating water clarity in cooling tower basins is better than at any point under chemical treatment.

•! Completely eliminated need for on-site hazardous chemicals (including acid) for treating towers.

Water Quality

Restored Energy Efficiency

Improved Safety


Cooling Tower Water Treatment

•! Eliminate Chemical Costs

•! Lower Water/Sewer Costs

•! Reduced Energy Consumption

•! Extends Life of Towers

•! Saves Precious Water

•! Blow Down Reusable

•! Reduces Carbon Footprint

•! Eliminates Hazardous Chemical Use/Contamination


Cooling Tower Water Treatment Cooling Tower Water Treatment

Thank You www.ecowaterchc.com


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