CM 321 - Mechanical

Lessons Learned Top Mistakes to Avoid when Improving your

Building’s Water Efficiency

Troy Aichele

Aichele and Associates, LLC

October 7, 2010

CM 321 - Mechanical

Aichele

+ IKE

LEE

CM 321 - Mechanical

CM 321 - Mechanical

CM 321 - Mechanical

Plunging into Plumbing – Specialty Systems Instructors: Troy Aichele

CM 321 - Mechanical

CM 321 - Mechanical

CM 321 - Mechanical

Objectives

1. Audits

2. Installation

3. The Human

Factor

CM 321 - Mechanical

Troy’s Toilet Trivia

In the United States, when is the toilet flushed

more often than any other time of the year?

CM 321 - Mechanical

Objectives

1. Audits

2. Installation

3. The Human

Factor

CM 321 - Mechanical

Assemble Data

Historical Use

Cost Data /

Utility Rates

Building Use and

Occupancy

CM 321 - Mechanical

Compare Benchmarks Water Use / SF / Year Comparisons

0

20

40

60

80

100

120

0 500,000 1,000,000 1,500,000 2,000,000

Gallo

ns

Hospital Size (Square Feet)

CM 321 - Mechanical

CM 321 - Mechanical

CM 321 - Mechanical

Sensor Activated Water Closets

CM 321 - Mechanical

Waterless

Urinals

CM 321 - Mechanical

74

Find Existing Leaks

CM 321 - Mechanical

Be thorough

CM 321 - Mechanical

CM 321 - Mechanical

CM 321 - Mechanical

CM 321 - Mechanical

Actual Fixture Counts not matching

Audit Count

CM 321 - Mechanical

CM 321 - Mechanical

Troy’s Toilet Trivia

Which toilet cubicle in a public restroom is

usually the cleanest?

CM 321 - Mechanical

Over or Under Estimating Use Rates

Water Closet – 3 / Day (Women)

– 1 / Day (Men)*

Urinal – 2 / Day (Men)

Faucets – 1 Minute / Person / Day

Shower Use – 8 Minutes / Day

*3 / Day if no urinals

CM 321 - Mechanical

Over or Under Estimating Use Rates

CM 321 - Mechanical

Measuring with Bucket and

Stopwatch

Measure twice

and average

Measure 10%

of similar

devices

throughout

facility

CM 321 - Mechanical

Objectives

1. Audits

2. Installation

3. The Human

Factor

CM 321 - Mechanical

Lowering GPF without changing bowl

CM 321 - Mechanical

Fixture Footprints

are not all the same

CM 321 - Mechanical

System Shut-downs vs. Freezing

CM 321 - Mechanical

Beta-Testing

CM 321 - Mechanical

Problematic Existing Conditions

CM 321 - Mechanical

Aerators vs. Flow Control

CM 321 - Mechanical

CM 321 - Mechanical

Objectives

1. Audits

2. Installation

3. The Human

Factor

CM 321 - Mechanical

Straying from Water Audit

Recommendations

CM 321 - Mechanical

Low Water Flow Concerns:

Maintenance Problems

CM 321 - Mechanical

Low Water Flow

Concerns:

User Negative

Feedback

CM 321 - Mechanical

Putting Water Efficiency

Ahead of User or Building needs

CM 321 - Mechanical

Troy’s Toilet Trivia

What percentage of Americans feel better

about themselves after flushing the toilet?

CM 321 - Mechanical

Waiting for the perfect time

CM 321 - Mechanical

Irrigation (Xeriscaping)

CM 321 - Mechanical

Think you’re not eligible

for rebates ?

CM 321 - Mechanical

Utility Rate Trends

$-

$1.00

$2.00

$3.00

$4.00

$5.00

$6.00

$7.00

$8.00

$9.00

2002 2003 2004 2005 2006 2007 2008 2009

Year

PeakWater$/CCFSewer$/CCF

10% 10 %

Utility Rate Trends…

Waste

Water

CM 321 - Mechanical

CM 321 - Mechanical

Follow-up Audits /

Stop looking for new products

CM 321 - Mechanical

Boiler Stack Economizer

Condensate Recovery

Cost: $1,090

Water / Sewer Savings: 720 GPD

Return on Investment: 5 Months

77

CM 321 - Mechanical

Prioritize Work via ROI Durations

CM 321 - Mechanical

1. Audits

2. Installation

3. The Human

Factor

Objectives

CM 321 - Mechanical

CM 321 - Mechanical

CM 321 - Mechanical

BONUS ROUND !!!

What day is World Plumbing Day?

CM 321 - Mechanical