Zero-Energy House Presentation

Dan Hackett202008134M-HTopic: Statistical Comparison to Ordinary House

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Zero Energy Houses

A Comparison of Standard Homes and Efficient Homes

--By Dan Hackett--

Some Facts:

• Started by US Department of Energy– 1995 Energy Star

• 50% energy savings

– 1996 Building America• 70% energy savings

– Zero Energy Homes• 100% energy savings

Basic Strategies for Energy Efficiency

• Increase insulation

• Solar cells

• Wind turbines

• Leak-proof windows/doors

• Use low power appliances

• Spectrally selective windows– Keep heat out or in

• Fluorescent bulbs– 65%

• Hot water heater that only heats when tap is turned on

• Solar cells– 2 kW– Net metering

Experiment:***The cooling and heating systems count for over

35% of year round energy use***Standard House Zero Energy HouseGray/Brown Shingle Roof White Tile Roof

1.5 ft Overhang 3 ft Overhang

R30 Attic Insulation * R30 Attic Insulation *

R4 Wall Insulation R10 Exterior Wall Insulation

Single Glazed Windows Double Glazed, Solar Sensitive Windows

Standard Ducts Extra Large Ducts

Standard Appliances Energy Star Appliances

Standard Lighting Fluorescent Lightbulbs

Typical Air Conditioning Unit Supreme Air Conditioning Unit

Solar Cells on Roof

Results

Normal House Zero Energy

Initial Energy Use

1839 kWh 837 kWh

Solar Power 0 kWh 502 kWh

Net Energy Use 1839 kWh 335 kWh

Monthly Cost $ 147 $ 27

Yearly Cost $ 1764 $ 324

Monthly Savings: $120

Yearly Savings: $1,440

Canadian Energy House Attempts

• Annual Numbers– BC Advanced House

• 12300 kWh• $984

– Waterloo Green Home• 15000 kWh• $1200

– Maison Performante• 11500 kWh• $920

References:• No More Electric Bills – MSNBC:

http://www.msnbc.msn.com/id/8852127/site/newsweek/• On the Path to Zero Energy Homes – FSEC:

http://www.nrel.gov/docs/fy01osti/29915.pdf• Zero Energy House Reinvents Resource Efficiency –

DoItYourself.com :http://doityourself.com/energy/zeroenergy.htm

• A Review of Low and Net-Zero Energy Solar Home Initiativeshttp://cetc-varennes.nrcan.gc.ca/fichier.php/33655/2005-133_e.pdf

• EnerGuide Appliance Directoryhttp://oee.nrcan.gc.ca/Publications/infosource/Pub/appliances/eg-environment.cfm?attr=4