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FARM ENERGY

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FARM ENERGY Energy Fundamentals for Farm Lighting FARM ENERGY PM 2089N – PowerPoint PPT presentation

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Title: FARM ENERGY


1
FARM ENERGY
Energy Fundamentalsfor Farm Lighting Farm Energy
PM 2089N
2
FARM ENERGY
(USDA Census of Agriculture, 2007)
PM 2089N
3
FARM ENERGY
  • Proper lighting should
  • Provide a safe, effective working environment
  • Deliver proper light level for animals
  • Be energy efficient
  • Be cost effective

PM 2089N
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FARM ENERGY
  • Lumens
  • Quantity of light output (lm)
  • Average rated life
  • Number of hours for half of the bulbs to burn
    out in lab tests

PM 2089N
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FARM ENERGY
  • Efficiency
  • Lumens/Watt
  • Example
  • 1200 lm/20 W 60

PM 2089N
6
FARM ENERGY
  • Foot-candles (fc)
  • Level of light at a working surface
  • One fc is amount of illumination from a candle
    falling on a surface at a distance of one foot

PM 2089N
7
FARM ENERGY
  • Incandescent
  • Most common currently
  • Least energy efficient
  • Cheapest initial cost
  • Shortest life
  • Being phased out from retail
  • 100 W Jan 1, 2012
  • 75 W Jan 1, 2013
  • 60 40 W Jan 1, 2014

PM 2089N
8
FARM ENERGY
  • Compact Fluorescent (CFL)
  • 10 times more life than incandescent
  • 75 less energy usage
  • Should be rated for moist and dusty environment
  • Enclosure globes can shorten life

PM 2089N
9
FARM ENERGY
  • Light Emitting Diodes (LED)
  • Five times more efficient than incandescent
  • Long rated life (near 100,000 hrs)
  • Directional lighting
  • Currently limited in damp or dusty environments
  • Improving efficiency and costs every six months
    stay tuned

PM 2089N
10
FARM ENERGY
  • Tube Fluorescent
  • T 12 (1.5 diameter)
  • Phasing out (bulbs July 2012)
  • T 8 (1 diameter)
  • 4x more efficient than incandescent
  • lt 12 off floor
  • Mount electromagnetic ballast in weatherproof
    fixtures
  • T 5 (0.6 diameter)
  • Shorter and more efficient than T8
  • Only good in clean-dry environments currently

PM 2089N
11
FARM ENERGY
  • Economic comparison example
  • 23 W CFL (1600lm) vs. 100 W incandescent (1580
    lm)
  • Used 8 hours per day (2920 hrs)
  • Electricity is 0.10/kWh

CFL CFL Type of Lamp Incandescent Incandescent
23 W Input Wattage 100 W
69.6 lm/w 1600 lm/23 W Efficiency 15.8 lm/w 1580 lm/100 W
67.2 kWh 0.023 kW x 2920 hr Energy Use 292 kWh 0.1 kW x 2920 hr
6.72 67.2 kWh x 0.10 Energy cost/yr 29.20 292 kWh x 0.10
PM 2089N
12
FARM ENERGY
  • 23 W CFL (1600lm) vs. 100 W incandescent (1580
    lm)
  • Used 8 hours per day (2920 hrs)
  • Electricity is 0.10/kWh

CFL CFL Type of Lamp Incandescent Incandescent
23 W Input Wattage 100 W
12,000 hrs Rated life 1500 hrs
6,000 hrs 50 of rated Assumed life 750 hrs 50 of rated
0.49 bulbs 2920 hrs/6000 hrs Bulbs/yr 3.9 bulbs 2920 hr/750 hrs
3.19 Cost/bulb 0.45
1.56/yr 3.19 x 0.49 bulbs Bulb cost/yr 1.75/yr 0.45 x 3.9 bulbs
13
FARM ENERGY
  • 23 W CFL (1600lm) vs. 100 W incandescent (1580
    lm)
  • Used 8 hours per day (2920 hrs)
  • Electricity is 0.10/kWh

CFL CFL Type of Lamp Incandescent Incandescent
23 W Input Wattage 100 W
6.72 67.2 kWh x 0.10 Energy cost/yr 29.20 292 kWh x 0.10
1.56/yr 3.19 x 0.49 bulbs Bulb cost/yr 1.75/yr 0.45 x 3.9 bulbs
8.28/yr 6.72 1.56 Annual Cost 30.95/yr 29.20 1.75
22.67/yr 30.95 - 8.28 Savings
0.14 yrs 3.19/22.67 Payback
14
FARM ENERGY
  • Summary
  • Adequate light level is important to meet basic
    needs in facilities in a safe manner
  • There are multiple options for efficient indoor
    lighting
  • Be aware of the impact of dust and humidity on
    light in your lighting decision
  • Include initial cost of wiring and fixtures when
    looking for cost savings
  • Appropriate disposal measures should be taken

PM 2089N
15
FARM ENERGY
  • For More Information
  • Google ISU farm energy or visit us online at
  • http//farmenergy.exnet.iastate.edu
  • Download ISU Farm Energy publications at no
    charge
  • Follow us on Twitter _at_ISU_Farm_Energy for updates
  • Ask your local utility provider to contact us!

http//farmenergy.exnet.iastate.edu
16
FARM ENERGY
http//farmenergy.exnet.iastate.edu
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