Energy Free Stock Watering Systems Deemed Savings Analysis

1
Energy Free Stock Watering Systems Deemed
Savings Analysis

• September 16, 2003

2
Energy Free Stock Watering Systems

• Energy free fountains are closed,
  super-insulated containers filled with water.
• These water heaters rely on the heat from
  incoming water to keep them ice free during cold
  weather rather than electric or propane water
  heating devices
• Oregon Trail Electric requested that the RTF
  review Energy Free stock watering systems to
  assess
• 1) Whether they could qualify for CRD and
• 2) What the potential savings might be from such
  a systems.

3
What Is An Energy Free Stock Watering System?
4
(No Transcript)
5
(No Transcript)
6
(No Transcript)
7
Summary of Available Data

• Field Study of Electrically Heated and Energy
  Free Automated Livestock Water Fountains -
  Prairie Agricultural Machinery Institute, Alberta
  and Manitoba
• From 1990 to 1993 PAMI compared 3 energy free
  livestock water fountains and 4 electrically
  heated ones
• Energy savings ranged from 440 1800 kWh,
  depending upon the efficiency of the electrically
  heated unit

8
Summary of Available Data (cont)

• Oregon Trail Electric Metering Study
• Metered single electrically heated tank use for
  most of 2002-03 winter
• Full season use for tank was approximately 1,134
  kWh/yr
• If Energy Free heater eliminates electric
  resistance heating, savings would be 1,134 kWh/yr
• Average savings from PAMI research 1,127 kWh/yr

9
Summary of Available Data (cont)

• Three manufacturers
• Incremental Cost 350 to 450 /tank depending on
  tank size and location. (New installations can
  also avoid wiring costs)
• Professional judgement average measure life
  7 yrs
• Used Residential Space Heating Load Shape

10
Results of Deemed Savings Calculation

• Current data restrict application to heating
  climate zones 2 3
• Option reduce savings to reflect milder winters
  in heating climate zone 1 and provide zone
  specific savings credits
• CR Discount Credit 172
• Still need product specification prior to
  establishing deemed value gt
• We unconditionally warrant that our two-hole hog
  drinker, Model WPM10, has more freeze resistance
  than any other two-hole hog waterer on the
  market Polar Max Energy Free Waterers