Saving Energy in Your Home Presented by Jim Phillips, P.E., CEM, CEA, - - PowerPoint PPT Presentation

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Saving Energy in Your Home Presented by Jim Phillips, P.E., CEM, CEA, - - PowerPoint PPT Presentation

Apr 30, 2023 331 likes •627 views

Saving Energy in Your Home Presented by Jim Phillips, P.E., CEM, CEA, GBE VP - Independent Energy Alternatives Introduction The Cost of Energy how to read your electric, gas, & water bills Energy Wasted how energy is lost in

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Saving Energy in Your Home

Presented by Jim Phillips, P.E., CEM, CEA, GBE VP - Independent Energy Alternatives

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Introduction

 The Cost of Energy – how to read your

electric, gas, & water bills

 Energy Wasted – how energy is lost in

your home (envelope, appliances, control)

 Measuring Energy –devices that let you

see how much electricity is used by appliances

 Changing Behavior – thinking &

becoming energy efficient – what you can do to lower energy usage or eliminate wasted energy

 Measuring Results & Calculating Savings

– a simple excel program to calculate energy & dollar savings

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The Cost of Energy – reading your energy bills

 Electric Meters

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The Cost of Energy – reading your energy bills

 Electric Meters

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The Cost of Energy – reading your energy bills

 Electric Bill

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Residential Electric Energy Usage – one week

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The Cost of Energy – reading your energy bills

 Gas Meter

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The Cost of Energy – reading your energy bills

 Gas Meter

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The Cost of Energy – reading your energy bills

 Gas Bill

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The Cost of Energy – reading your energy bills

 Water Meter

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The Cost of Energy – reading your energy bills

 Water Bill

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Energy Wasted

 Building Envelope – Leaks & Insulation

  • Attic/Roof/Floor

 Insulate attic to R-49 (14”) – each inch to R-49

saves approx. $350/yr

 Install Radiant Barriers (saves 15% of cooling bill)  Insulate Peer&Beam floors to R-25 (6”)

  • Windows/Doors

 Seal all cracks – a ǒ” wide 6’ long crack costs

about $28 a year in lost AC cooling.

  • Walls

 Insulate walls to R-13 (3”)  Install electrical outlets & switches on exterior wall

with sealers

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Energy Wasted

 Building Envelope – Insulation

  • Research has found that, due to improper

installation (gaps and misalignment), Batt Insulation often achieves less than one half of its rated R-value.

  • Insulation must be in contact with the attic or

wall surface to be insulated.

 Chimney – chimney balloon keeps warm air

from escaping up the chimney.

 Windows – mist window and apply bubble wrap to

the inside of the pane (bubbles against the glass).

 Pools – install solar pool covers to reduce evaporation

and heat pool

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Energy Wasted

 Building Envelope – Leaks & Insulation

  • Piping & Ducts

 Water Leaks – a slow drip = 36 gallon per day,

costing approx. $187 annually for cold water; $270/yr for gas heated hot water; $444/yr for electric hot water A leak of 1 drip per second cost $1 per month

 Low Flow Showers = 2.2 gpm – saves approx. 40%  Aerated faucets reduce water flow to 2.2 gpm or less  Air Duct Leaks – the loss of heated or cooled air

(velocity x area x delta T x energy cost = Dollars lost)

 Air Duct Insulation – eliminates the loss of heated or

cooled air into the attic or under the home (1/R x area x delta T x energy cost = Dollars lost)

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Energy Wasted

 Building Envelope – Leaks

  • Ducts

 Leakage increases required HVAC size by about 40%  Supply leaks draw in hot, moist air, causing mold, and

creating negative pressures

 Return leaks bring air from attic or crawlspace and

bypass filter grille, caussing dust, discomfort, backdrafting (CO), high bills, and mold

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Energy Wasted

 Appliances – High Efficiency

  • AC units (13 SEER+) – each SEER

improvement saves approx. $250/yr

 Tonnage - Bigger is NOT Better

 Causes short cycling  Reduced Life, Efficiency, Dehumidification, Filter Effectiveness

  • Energy Star Appliances – are generally 40%+

more efficient than standard appliances

  • LED or CFL light bulbs – reduces lighting costs
  • ver 50% and increase bulb life 300%
  • Low Flow Toilets & Showers – reduces water

flow 40+%

  • Choose Gas over Electric Appliances –

1 to 4 cost ratio

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Energy Wasted

 Controls

  • Programmable Thermostats

 Raise/lower “away” temperature 10 degrees –

each hour saves about $1.50

 Raise/lower living temperature – each degree is

worth 3%-6% in cooling/heating cost

  • Hot Water Heater Settings

 Set at 120°F (minimum due to germs)  Each 20°F reduction saves $17/yr (gas)

$95/yr (elect)

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Measuring Energy

 Measuring Devices

  • Kill-A-Watt Meter – used to test the energy

use of plug-in appliances

  • Blue Line Meter – monitors the electric meter,

registering changes in energy usage and real time cost of energy usage

  • Incense Sticks – place a lit stick near windows

and doors. If the smoke moves, you have a leak. Seal it.

  • Your nose – if you smell gas (rotten egg smell),

leave the house and then call 911.

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Changing Behavior

 Turn it OFF

  • Lights & Computers – 100 watts, 10 hrs/day,

at 10±/kWh = 10±/day or $36.50/yr Use “smart” surge protectors.

 Keep it CLEAN –filters and coils; air

conditioner & furnace (savings of 15%)

 COVER it UP – pools; roof turbines  Have it TESTED – AC & furnace  Keep a LIST

  • Appliance maintenance dates
  • Service companies & personnel
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Measuring Results & Calculating Savings

 Tracking your energy usage using your

energy bills

  • Benchmark – record your past year’s bills
  • Make changes to more efficient appliances
  • Record each month’s energy bill
  • Look for changes – reduction in energy & cost

 Use a simple excel program to record

energy changes & calculate energy savings

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Sample Excel Program

ENERGY Management Program for:

Name

Enter data in Blue areas Location City/Zip Base Year Before Changes Electricity: Natural Gas: Year: 2012 Energy (kWh) Base Rate ($/kWh) Cost ($) Base Usage (MCF) Base Rate ($/MCF) Cost ($) Base January 701 $ 0.0959 $ 67.20 13.2 $ 8.3114 $ 109.71 February 505 $ 0.0977 $ 49.33 18.0 $ 7.5467 $ 135.84 March 506 $ 0.0976 $ 49.41 4.7 $ 10.9170 $ 51.31 April 587 $ 0.0967 $ 56.79 3.0 $ 12.0467 $ 36.14 May 933 $ 0.1054 $ 98.36 1.5 $ 14.3800 $ 21.57 June 1,027 $ 0.0990 $ 101.71 1.8 $ 14.1056 $ 25.39 July 1,238 $ 0.0964 $ 119.40 1.6 $ 16.1188 $ 25.79 August 1,323 $ 0.0987 $ 130.56 1.5 $ 17.4867 $ 26.23 September 1,077 $ 0.1000 $ 107.70 1.0 $ 20.7800 $ 20.78 October 638 $ 0.1138 $ 72.59 1.7 $ 14.3588 $ 24.41 November 591 $ 0.1157 $ 68.37 4.8 $ 10.7792 $ 51.74 December 573 $ 0.1165 $ 66.77 11.8 $ 9.1322 $ 107.76 Total: 9,699 $ 0.1028 $ 988.19 65 $ 12.9969 $ 636.67

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Sample Excel Program

ENERGY Management Program for:

Name

Enter data in Blue areas Location City/Zip Base Year Before Changes Electricity: Natural Gas: Water: Year: 2012 Energy (kWh) Base Rate ($/kWh) Cost ($) Base Usage (MCF) Base Rate ($/MCF) Cost ($) Base Usage (gal) Base Rate ($/kgal) Cost ($) Base January 701 $ 0.0959 $ 67.20 13.2 $ 8.3114 $ 109.71 4,000 $ 8.3925 $ 33.57 February 505 $ 0.0977 $ 49.33 18.0 $ 7.5467 $ 135.84 5,000 $ 7.6800 $ 38.40 March 506 $ 0.0976 $ 49.41 4.7 $ 10.9170 $ 51.31 4,000 $ 8.3925 $ 33.57 April 587 $ 0.0967 $ 56.79 3.0 $ 12.0467 $ 36.14 5,000 $ 7.6800 $ 38.40 May 933 $ 0.1054 $ 98.36 1.5 $ 14.3800 $ 21.57 5,000 $ 7.6800 $ 38.40 June 1,027 $ 0.0990 $ 101.71 1.8 $ 14.1056 $ 25.39 4,000 $ 8.3925 $ 33.57 July 1,238 $ 0.0964 $ 119.40 1.6 $ 16.1188 $ 25.79 11,000 $ 6.0109 $ 66.12 August 1,323 $ 0.0987 $ 130.56 1.5 $ 17.4867 $ 26.23 14,000 $ 5.4879 $ 76.83 September 1,077 $ 0.1000 $ 107.70 1.0 $ 20.7800 $ 20.78 12,000 $ 5.8075 $ 69.69 October 638 $ 0.1138 $ 72.59 1.7 $ 14.3588 $ 24.41 11,000 $ 6.0109 $ 66.12 November 591 $ 0.1157 $ 68.37 4.8 $ 10.7792 $ 51.74 9,000 $ 6.4133 $ 57.72 December 573 $ 0.1165 $ 66.77 11.8 $ 9.1322 $ 107.76 6,000 $ 7.2050 $ 43.23 Total: 9,699 $ 0.1028 $ 988.19 65 $ 12.9969 $ 636.67 90,000 $ 7.0961 $ 595.62 Next Year Following Changes Electricity: Natural Gas: Water: Year: 2013 Energy (kWh) New Rate ($/kWh) Cost ($) New Usage (MCF) New Rate ($/MCF) Cost ($) New Usage (gal) New Rate ($/kgal) Cost ($) New January #DIV/0! #DIV/0! #DIV/0! February #DIV/0! #DIV/0! #DIV/0! March #DIV/0! #DIV/0! #DIV/0! April #DIV/0! #DIV/0! #DIV/0! May #DIV/0! #DIV/0! #DIV/0! June #DIV/0! #DIV/0! #DIV/0! July #DIV/0! #DIV/0! #DIV/0! August #DIV/0! #DIV/0! #DIV/0! September #DIV/0! #DIV/0! #DIV/0! October #DIV/0! #DIV/0! #DIV/0! November #DIV/0! #DIV/0! #DIV/0! December #DIV/0! #DIV/0! #DIV/0! Total: #DIV/0! $ - #DIV/0! $ - #DIV/0! $ -

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Sample Excel Program

Lighting Savings

Energy Cost $ 0.1028 /kWh Savings $ 288 Hours/Day 10 Payback 1.6 Yrs. Days/Week 7 Weeks/Year 52 Hours/Year 3,640 Light Totals 0.8 2,803 $ 288.11 Initial Initial Annual Total kW Annual Lighting Lighting Annual 1.0 Cost $ 470 Existing Proposed Watts Watts kW kWh Lighting Total kWh Price Total Lighting Lighting Before After QTY Reduced Reduced Savings 3,549 $ 364.81 per Lamp Cost EXIT Incandescent EXIT LED 40 3 0.0

  • $ -

$ - $ 60.00 $ - EXIT Fluorescent EXIT LED 11 3 0.0

  • $ -

$ - $ 60.00 $ - Incandescent CFL 175 32 0.0

  • $ -

$ - $ 15.00 $ - Incandescent CFL 150 23 0.0

  • $ -

$ - $ 15.00 $ - Incandescent CFL 100 20 0.0

  • $ -

$ - $ 3.00 $ - Incandescent LED PAR 38 100 15 0.0

  • $ -

$ - $ 40.00 $ - Incandescent LED PAR 38 75 10 0.0

  • $ -

$ - $ 50.00 $ - Incandescent LED 75 17 0.0

  • $ -

$ - $ 40.00 $ - Incandescent CFL 75 15 0.0

  • $ -

$ - $ 5.00 $ - Incandescent LED WallPak 75 10 0.0

  • $ -

$ - $ 130.00 $ - Incandescent Flood CFL Flood 75 14 0.0

  • $ -

$ - $ 15.00 $ - Incandescent Flood LED Flood 75 9.5 0.0

  • $ -

$ - $ 25.00 $ - Incandescent Outdoor CFL Outdoor 60 13 0.0

  • $ -

$ - $ 10.00 $ - Incandescent CFL 60 13 5 0.2 855 $ 87.93 0.3 $ 112.25 $ 3.00 $ 15.00 Incandescent LED 60 9 5 0.3 928 $ 95.41 0.3 $ 112.25 $ 26.00 $ 130.00 Incandescent LED MR16 5.3 60 6 0.0

  • $ -

$ - $ 45.00 $ - Incandescent CFL 40 10 0.0

  • $ -

$ - $ 5.00 $ - Incandescent LED 40 7.5 0.0

  • $ -

$ - $ 20.00 $ - Incandescent LED MR16-12-7-4 40 9 0.0

  • $ -

$ - $ 45.00 $ - Incandescent LED PAR 20 30 7 0.0

  • $ -

$ - $ 40.00 $ - Incandescent LED MR16-12-3-3 30 3 0.0

  • $ -

$ - $ 45.00 $ - Incandescent CFL 25 9 0.0

  • $ -

$ - $ 5.00 $ - Incandescent candle obra CFL candle obra 25 9 0.0

  • $ -

$ - $ 5.00 $ - Halogen (90 W) CFLw/Par 38 Lens 90 19 0.0

  • $ -

$ - $ 65.00 $ - Halogen (75W) CFLw/Par 38 Lens 75 19 5 0.3 1,019 $ 104.77 0.375 $ 140.31 $ 65.00 $ 325.00 Halogen (75W) LED WallPak 75 10 0.0

  • $ -

$ - $ 130.00 $ -

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Sample Excel Program

Air Exfiltration This Chart denotes cooling losses to direct wind pressure for various size openings at a temperature differential of 25 degrees Fahrenheit. Tons of Air Conditioning Length (ft) width (ft) Area (SF) Open Area 1 mph 2 mph 5 mph 10 mph

Open Area (SF) =

10 0.0104

0.104

0.104 0.0594 0.1189 0.2971 0.5943

1 / 8 " wide

Savings Calculation Tons 0.2971 2,311 kWh reduced/Yr. EER 10 Price/kWh $0.11000 kW/ton 1.2 Cooling Months 9 Total Savings kW 0.3566 Hours 6,480 per year = $254.16

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Sample Excel Program

Temperature Reset

Initial Temp. New Temp. AC Tons AC EER AC Hours/Yr. Cost/kWh AC Cost/Yr. Savings/ Degree Annual Savings 72 75 5 10 3,300 $ 0.11 $ 2,178.00 3% $ 196.02 1,782 kWh reduced/Yr. EER = SEER x 0.85

Temperature Setback

Initial Temp. Set-Back Temp. AC Tons AC EER AC Hours/Yr. Cost/kWh AC Savings/Yr. 72 82 5 10 2,808 $ 0.11 $ 98 887 kWh reduction/Yr. EER = SEER x 0.85

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Sample Excel Program

Smart Standby Power Management Enter data in blue cells or areas Device Controlled Kw Rating Hours/Wk Saved Weeks Cost/kWh Savings/ Yr. Monitor 0.1 10 52 $ 0.11 $ 5.72 156 kWh reduction/Yr. Printer 0.2 10 52 $ 0.11 $ 11.44 $ - $ - $ - $ - Total = $ 17.16 /yr. 1,000 watts = 1 kW

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Energy Web Sites

http://energy.gov/ http://www.epa.gov/ http://www.energystar.gov http://www1.eere.energy.gov/ analysis/tools.html#0 http://energy.gov/science- innovation/energy-efficiency

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Questions & Answers