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EJ TCIGT: Solar Power for your Home > Chapters 1-4 > Flashcards

Chapters 1-4 Flashcards

1
Q

Home Energy Rating The Energy Rater Inspects:

A
  1. Insulation levels
  2. Window efficiency
  3. Heating and cooling systems
  4. Air leakage
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2
Q

Home Energy Rating The Energy Rater’s report (HERS) includes…

A
  1. Home’s Energy Rating (Zero to 100; low is good)
  2. Estimate of annual energy use
  3. Estimate of annual energy cost
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3
Q

Home Energy Rating The Energy Rater’s Report Recommends…

A
  1. Energy Efficient Improvements
  2. Costs
  3. Savings
  4. Expected payback times
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4
Q

Fannie Mae

A
  • Federal National Mortgage Association Private, shareholder-owned corporation
  • Set up by congress to keep money flowing to mortgage market
  • Purchases mortgages from lenders to ensure funds are available
  • Placed under power of Federal House Finance Agency in 2008
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5
Q

EEM?

A

Energy Efficiency Mortgage

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6
Q

REEIL

A

Residential Energy Efficiency Improvement Loan

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7
Q

Freddie Mac

A

Federal Home Mortgage Loan Corporation Secondary Mortgage Market:

  1. Buys mortgages from lenders
  2. Packages them as securities
  3. Sells them as guaranteed investments to insurance companies and pension funds

Placed under power of Federal House Finance Agency in 2008 More long term than short term

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8
Q

Is solar allowed in this community?

A
  1. Contact local building department
  2. Study local building codes
  3. Ask local contractors
  4. Check HOAs
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9
Q

Livability Questions of home design

A
  1. # of bedrooms?
  2. # of bathrooms?
  3. Special rooms?
  4. Special storage/rec (RV?, pool?)?
  5. Garage
  6. Location
  7. Lot
  8. Available services (water?/sewer?/cable?/elec?)
  9. Architecture
  10. Solar orientation
  11. Lot costs
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10
Q

Residential Construction Process (steps 1-5)

A
  1. Preconstruction prep
  2. Excavation
  3. Pest control
  4. Concrete
  5. Waterproofing
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11
Q

Residential Construction Process (steps 6-10)

A
  1. Framing
  2. Roofing
  3. Plumbing
  4. Electrical
  5. HVAC
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12
Q

Residential Construction Process (steps 11-15)

A
  1. Siding/masonry
  2. Doors and windows
  3. Insulation
  4. Drywall
  5. Trim
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13
Q

Residential Construction Process (steps 16-20)

A
  1. Painting
  2. Cabinetry
  3. Flooring and tile
  4. Gutters and downspouts
  5. Landscaping and driveways
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14
Q

3 means of heat transfer

A
  1. Conduction
  2. Convection
  3. Radiation
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15
Q

3 solar design techniques

A
  1. Direct gain
  2. Indirect gain
  3. Isolated gain
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16
Q

Direct gain

A

Sunlight enters south-facing windows and is absorbed by dark (or water-filled) floors/walls/thermal mass. At night, the sunless, cooling room is warmed by these.

17
Q

Indirect gain

A

Interior walls/thermal mass are placed very close to exterior windows to block light and absorb heat.

18
Q

ARRA

A

American Recovery and Reinvestment Act (Federal Program to bring down solar costs and create solar jobs)

19
Q

Incentives and Paybacks

A
  1. Energy Policy Act Renewable Energy Certificates (RECs)
  2. State and local rebates and buy-downs (naseo.org, dsireusa.org)
  3. Federal and state tax incentives
20
Q

Direct Gain Diagram

A
21
Q

Indirect Gain Diagram

A
22
Q

Isolated Gain Diagram 1

A
23
Q

Isolated Gain Diagram 2

A
24
Q

ARRA

A

American Recovery and Reinvestment Act

(Federal Program to bring down solar costs and create solar jobs)

25
Q

Incentives and Paybacks

A
  1. Energy Policy Act Renewable Energy Certificates (RECs)
  2. State and local rebates and buy-downs (naseo.org, dsireusa.org)
  3. Federal and state tax incentives
26
Q

Solar Diagram

A
27
Q

Isolated Gain

A

Sunspace (solarium) uses solar energy to warm a room

Greenhouse on your house

Requires ventilation (too hot and too cold)

28
Q

Solar Noon

A

9 am to 3 pm

29
Q

Home Orientation

A

Rectangle with long side running east/west

30
Q

4 Components of Energy Efficient Design

A
  1. Well-contructed/tightly sealed thermal envelop
  2. Energy-efficient doors/windows/appliances
  3. Properly-sized, high-efficiency heating and cooling systems
  4. Controlled ventillation
31
Q

Windows

A

South-facing? High Solar Heat Gain Coefficient (SHGC)

North-, East-, West-facing? Low Solar Heat Gain Coefficient

32
Q

Appliances with Energy Star label

A

Exceed minimum efficiency requirements

33
Q

Appliances that commonly use most energy

A
  • water heaters
  • clothes washers
  • clothes dryers
  • dishwashers
  • refridgerators
34
Q

Solar Tubes

A

Vertical tubes of reflective material installed vertically between the home’s exterior roof and interior ceiling

35
Q

Thermal Envelope

A
  • All that shields living space from the outdoors: walls, roof, insulation, vapor retarders, windows weather stripping
  • Designed to keep interior air in and exterior air out
  • Good insulation has high R value
36
Q

Vapor Retarders

A
  • Minimize condensation of water vapor on exterior walls
  • Colder climates: water vapor condenses on the inside of exterior walls
  • Humid climates: water vapor condenses on the outside of exterior walls
  • Condensation contributes to heat loss, mildew and other problems
37
Q

Heating and Cooling

A

Homes with good envelopes and need less heating and cooling

38
Q

Ventillation

A

Important for health, bad for energy efficiency

Energy Recovery Ventilators (ERVs) can extract 70% of energy from stale air being cycled out of the home

Roof Ridge Vents: vents hot attic air out without letting water in

EJ TCIGT: Solar Power for your Home (1 decks)

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