INNOVATIONS IN EFFICIENCY SHOWCASE Cooling Tower Management: Managing and Optimizing Water Efficiency

Transcription

1 INNOVATIONS IN EFFICIENCY SHOWCASE Cooling Tower Management: Managing and Optimizing Water Efficiency October 29,

2 Alliance for Water Efficiency Welcome to the Webinar Webinar will be 60 minutes in length with time for questions. Audio is through your telephone or computer microphone and speakers. The webinar phone line will be muted during the presentation because we are recording. Questions can be typed in throughout the webinar and will be answered at the end by the speakers. Innovations in Efficiency Showcase Series Educational webinar series for water professionals. Objective: share efficiency-related content to keep professionals and communities ahead of the curve. Innovative and emerging technologies and services New approaches to efficiency-related challenges Case studies of successful application AWE Business and Industry partners are eligible to participate. Series will continue with new webinars in Contact us if you are interested in participating! 2

3 Alliance for Water Efficiency Webinar Speakers Mary Ann Dickinson, President and CEO Alliance for Water Efficiency Rick Alvarado, Cooling Tower Program Director Denver Water Shawn Bray, Business Development Director Terlyn Industries Scott Whipp, Regional Manager & Principal Phigenics, LLC Kellen Utecht, Director of Sustainability Phigenics, LLC Purpose of the Webinar Cooling tower management an important efficiency strategy: Creates significant savings in water, wastewater, energy and money. Businesses offering innovative services and technologies to utilities and facilities to capture these savings. Strategies and solutions available to facility managers to make their operations more cost-effective, safe and sustainable. Utility rebate and incentive programs available to help commercial customers achieve these savings. 3

4 What is a Cooling Tower? Used in large building central cooling systems to remove large amounts of heat from air and equipment Also used for refrigeration, cold storage facilities, dry cleaning, medical equipment, manufacturing and industry Cooling Tower Water Consumption Source: EPA WaterSense at Work 4

5 Developing a Cooling Tower Conservation Program with Denver Water Cooling Tower Performance Rebate Program Presented by Rick Alvarado Conservation Tech III Cooling Tower Program Director Denver Water 5

6 Why Does Denver Water Care? Reduce water & energy (heating) costs for our customers Reduce operating costs (water treatment, pumping, chemicals) Reduce wastewater discharge & costs Save potable water for expanding population Recycled and New Supply Drought response Cooling Tower Performance Rebate Program Customers can earn 50% of project costs up to $40,000 for improving the efficiency of their Tower. Earn $18.50 for every 1000 gallons of water saved over a one-year period. Which ever is less! Must meet a minimum savings requirement of 50,000 gallons per year to qualify. 6

7 Water Conservation Increase cycles of concentration Quickest method of water conservation No downtime Consult a chemical supplier Performance Rebate Program Requirements Make-up and blowdown meters Controller capable of monitoring tower conductivity Communications package allowing for monthly reports to Denver Water 7

8 Alliance for Water Efficiency Why Performance Based Rebate? Cooling Towers Only! No More Contracts! Paying for results Don t leave money on table! Allows for long-term savings component. Easier sell for vendor! Example 800 Ton HVAC Tower Total Savings: $1,659/year + chemical costs + $6,253 incentive Assume: average 25% heat load, 24 hour/day, 365 Cycles 5 8 Savings Makeup Water 15 gpm 10,800 gpd 3,942,000 gpy gpm 9,874 gpd 3,604,000 gpy 1.25 gpm 926 gpd 338,000 gpy $1,100/year@$3.38/1000gal Blowdown Water 3 gpm 2,160 gpd 788,400 gpy 1.75 gpm 1,234 gpd 450,514 gpy 1.25 gpm 926 gpd 338,000gpy $1.95/1000 gal 8

9 Water Treatment Programs Traditional chemical treatment Green chemical treatment Physical water treatment Example 800 Ton HVAC Tower Total Savings: $3,474/year + chemical costs + $13,079 incentive Assume: average 25% heat load, 24 hour/day, 365 Cycles 5 40 Savings Makeup Water 15 gpm 10,800 gpd 3,942,000 gpy 12.3 gpm 8,860 gpd 3,234,500 gpy 2.7 gpm 1,940 gpd 707,500 gpy $2,389/year@$3.38/1000gal Blowdown Water 3 gpm 2,160 gpd 788,400 gpy 0.3 gpm 220 gpd 80,900 gpy 2.7 gpm 1,940 gpd 707,500gpy $1.95/1000 gal 9

10 Action Plan!!!! Can customer save at least 50k gallons? Does customer have meters? DW can provide used meters! Need to verify tower consumption! Targeted cycles? Target Set point? Days of operation? Rebate application Wastewater Credit? Start Rebate Process Complete and send form to DW Meet with DW and Customer for Tower audit. Determine best date to begin. Denver Water will track your water use for 1 year. Provide make up and bleed readings (monthly) Provide receipts for service (project cost) After a year of monitoring, Denver Water will issue a check for the amount of water saved. 10

11 Cooling Tower Incentive Program 11

12 TERLYN INDUSTRIES Shawn Bray, Business Development Director My main focus is to introduce and educate individuals and companies about the concept of cooling tower water conservation. 12

13 A comprehensive water treatment program is utilized on all cooling towers to control the major problems that can occur. It is the scale inhibitor alone that determines the amount of bleed-off that is required to maintain system integrity. A scale inhibitor is used to control scale formation. A corrosion inhibitor is used to control corrosion. A biocide is used to control biological growth. All water treatment programs use similar products to control corrosion, and biological fouling. Scale Inhibitors All scale inhibitors work by increasing the natural saturation point of the cooling tower water, increasing its ability to hold hardness in solution. For example, if the incoming water is 100 ppm hardness naturally and you add a typical scale inhibitor, you would increase the water s ability to hold hardness to 300 ppm (or you increase the saturation point 3 times). The TERLYN Scale Inhibitor is tested and proven to increase the saturation point to the highest levels possible while still maintaining complete system integrity - higher than any other product available. 13

14 Operating Range Comparison 14

15 Water Conservation in Cooling Towers Study Sponsored by Denver Water Paul R. Puckorius Puckorius & Associates, Inc. Water & Waste Water Consultants Arvada, Colorado Water Treatment Study Denver Federal Center Richard T. Castro Building City & County of Denver Jason Millheim, LEED AP Denver Water Water Treatment Study Four Roof-Top Units (RTU) Each RTU is an independent system that serves a quadrant of the building Units share equal load Units are on same roof-top Install same controls in each unit Results came down to water treatment only 15

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17 Traditional Chemical High-cycles Chemical Improved Chemical Electro Magnetic Pulse 17

18 6 Year Total Water Savings 2,127,983 GALLONS Small Tower (under 1000 ton) w/ Low Demand Load Executive Order All government buildings must reduce their water use by 26% by

19 Driving Innovation in environmental performance To help lead to positive market transformation. Building 67 19

20 GSA is expanding the use of the TERLYN Program to more of their Mission Critical Buildings - all experiencing substantial cooling tower wastewater reduction. National Ice Core Laboratory NOAA Data Center Social Security Administration Department of Agriculture Department of Education Department of Labor FBI EPA GSA Inspector General 40%-80% Reduction These buildings are the headquarters for our Nation s critical operations. GSA Cooling Tower Water Conservation Savings Building Start Date Months % Water Savings Gallons Saved Building 67 Oct, % 4,232,131 Cesar Chavez May, % 852,270 Building 56 Jun, % 936,940 Building 810 GSA Jun, % 1,233,336 Building 85 Feb, % 130,249 Building 810 USDA May, % 111,980 Water Conservation Savings Average 60% 20

21 Chiller Efficiency With Scale Present 45% 36% 27% 18% 9%.25mm.51mm.76mm 1.02mm 1.27mm Scale Thickness On Tubes Increased Energy Demand (Cost) Benefits of Terlyn Cooling Tower Water Conservation Program Complete System Integrity No scale, no corrosion, no biological growth Highest Possible Cooling Tower Water Conservation 50%-25% down to only 2%-5% waste water Utility Savings Our program pays for itself from the water utility savings and puts significant water & energy savings back into your operating budgets Decreased Energy Consumption Pumps run less Increased Efficiency of Entire System 21

22 Thank You! For more information Contact: Shawn Bray Ext 105 Pioneering a Portfolio Approach to Cooling Water Management with Walmart 22

23 Scott Whipp Regional Manager and Principal Phigenics, LLC Kellen Utecht Director of Sustainability Phigenics, LLC Phigenics, LLC Independent Water Management Company Purpose: To help facility managers optimize the efficiency and cost and improve the safety of their water systems. Product: 4 Box Water Management Programs 2 CDC ELITE Certified Water Testing Laboratories 23

24 If your building water system is not safe, then it is not sustainable. Overview of the New York City Outbreak and Response As of : 12 Dead 121 Infected 20 out of 135 cooling towers tested had Legionella Politically dynamic situation 24

25 New York City Outbreak and Response New York City Council Measure INT Passed 42-0 on August 13, 2015 Requires building owners cooling towers to: Register all towers (within 30 days) Receive a quarterly inspection Develop and implement a maintenance plan in line with the current engineering standards to prevent bacterial contamination Penalties $2,000 for first violation $5,000 for subsequent Penalty doubles if someone is killed or hurt Maximum fine of $25,000 and one year in prison 25

26 ANSI/ASHRAE Standard 188 "Legionellosis: Risk Management for Building Water Systems" The new Standard was officially approved and published on 26 June More than 5 million buildings in the U.S. are within scope of the requirements in the standard. The Standard requires at a minimum building owners to establish and practice a Water Management Program for facilities with any of the following: Cooling towers or evaporative condensers, Whirlpool spas, Ornamental fountains, Misters, atomizers, air washers, humidifiers, or Other devices that release water droplets. And, for potable (domestic) plumbing systems if a building has: Multiple housing units with a centralized hot water system, More than ten stories, Housing for occupants over the age of 65, Patients staying longer than 24 hours, or An area housing or treating people with certain health factors. Pioneering a Portfolio Approach to Cooling Water Management through Independence 26

27 Decision Criteria for Water-Cooled Stores Fragmented Approach Driving Higher Costs & Water Use 27

28 Costs of Operational Inefficiencies Excessive Water Consumption Low cycling of water in cooling towers Insufficient supplier oversight Slow response time to leaks Decreased Energy Efficiency Tower shutdowns and remediation Scaling reduced heat transfer which increased electrical consumption Major microbiological issues Exhausted Labor Operations Additional hours required Lack of access to real-time data Increased worker health and safety risks Cooling Water Management Framework 28

29 1. Attractive return on investment through reduced operational and capital expenditures in the portfolio s cooling tower operation 2. Alignment with existing corporate sustainability goals Being proactive stewards of water resources Achieving energy efficiency goals Promoting a healthy environment for consumers and employees Reporting to disclosure programs 29

30 Key Elements Product and equipment specifications; Process flow diagrams Water quality standards e.g., source and quality; Key performance indicators (KPIs) Test methodology requirements; Water treatment supplier requirements; A summary of roles and responsibilities; and A corrective action policy for noncompliance. 30

31 Key Elements A cloud based software platform specialized for cooling water management A standardized system for automatic sensor monitoring; Make-up and blow-down meters; Secure wireless data communications; A standardized online service report for contractors. 31

32 Fragmented Approach Driving Higher Costs & Water Use Portfolio Approach 32

33 Portfolio Approach Benefits Reduced Water Consumption by 25%/CT 660 Million Gallons $4.4 Million Improved Labor Operations Reduced labor expense Enhanced decision making Enhanced worker health and safety Increased Energy Efficiency Decreased tower failures Increased heat transfer ability Significant improvement in microbiological control 33

34 Alliance for Water Efficiency Thank You! For more information about defensible water safety and CAPEX/OPEX optimization programs for potable and utility water systems Contact: Kellen Utecht In Closing Got any questions? Type them in! A PDF of the presentation as well as the recorded webinar will be posted online at Learn more about Showcase Companies and special offers for AWE members at 34

35 Thank You for Attending the Webinar! 35