WESH Water Technology Incentives

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• WESH Water Technology Incentives
• Drain water heat recovery5- used in waste-water
  drain piping
• Structured plumbing systems6 used with
  on-demand pumping systems on the hot water lines

• Both technologies are good for the good for
  business, your customers and the environment!

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• Hot Water Issues
• Water heating energy is wasted waiting for hot
  water at the fixture
• Water itself is wasted going down the drain
• YOU PAY FOR BOTH! on your utility and water bill

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Annual Energy Use for Heating Water
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Annual Water and Energy Waste
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US Potential

• Annual waste in existing homes (10 gallons/day)
• 415 billion gallons
• 3 billion therms
• 50 billion kWh
• 10 billion
• Annual increase in waste in new construction
• 1,200,000 new units per year
• Increased waste
• 4.4 billion gallons
• 110 million
• In 20 years waste will grow by
• 88 billion gallons
• 20 increase of current waste (existing homes)
• Additional water and energy waste in
• multifamily, commercial and industrial buildings.

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According to the research.

• Water is wasted
• Based on the volume of water between the source
  of hot water and the fixture.
• At low flow rates (really low face velocities).
  The lower the flow rate, the more water that is
  wasted.
• When there are restrictions to flow in the
  piping.
• Energy is wasted
• When water is wasted. This is true both in the
  building (pressurizing and heating) and in the
  water use cycle.
• When overcoming the heat losses in the piping.
  The longer the pipe, the larger the diameter, the
  slower the face velocity, the less the
  insulation, the worse the ambient environment
  surrounding the pipes, the more energy that is
  lost.

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Nothing New..

• "The efficiency of storage hot-water systems may
  be increased if pipe-runs are kept as short as
  possible.  Eight feet of ¾ inch copper pipe holds
  one pint of water. Therefore, in a pipe 32 ft
  long, half a gallon may cool off between
  operations of the tap it feeds.  This not only
  wastes energy, but lengthens the time before
  really hot water reaches the tap   
• Source Your House and How to Build It A
  Complete Illustrated Guide for the Home Builder
  and House Owner.  With plans and working
  drawings.  Written and designed by Ken Sherrott.
   A color gravure publication. Australia 1954

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Gallons Wasted as a Function of Time and Fixture
Flow Rate(Green lt 2 cups), Red gt1/2 Gallon)
1 cup 8 ounces 1/16th gallon 0.0625 gallon
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• What can be done?
• Structured plumbing systems
• Drain water heat recovery
• -Lets look at both technologies-

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• Sequence of operation
• Pump is turned on when entering room
• Hot water is circulated in the loop until the
  temp sensor is satisfied at farthest point of
  draw
• Pump shuts off and water is hot at all fixtures
  (sometimes this is only a matter of seconds after
  being activated)
• Water is used and cycle is completed

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• Multiple ways to activate circulation pump
• conventional wall witch
• activate off light switch for the room
• motion detector switch
• push button type switch
• wireless switch for retrofit applications
• NOTE the pump must be activated from any room
  where hot water will be needed. Each room with a
  fixture must have a control switch of some type

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• There is still substantial energy available to
  recover from the drain water discharge!
• Drain water heat recovery technology

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Drain water heat recovery system- GFX
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3 Installation choices
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Drain water recovery compares well with appliance
savings!
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Contact program manager for details on upcoming
training for these technologies! 888-509-3247 xtn
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