Extra Notes and Citations
- Source Images: freeimages.co.uk ; freeimageslive.co.uk ; 'creator' bamboo cr103.com CC-BY
- Total Energy Use (US 2011): 97.5 quadrillion (=10^15, or one thousand trillion) Btu. US EIA
- Residential Sector: 38.07% of electricity from power sector (1.42 trillion kWh) US EIA
- For housing units, only (not vehicles or goods/package production) that's an average of 89.6 million BTUs and $2,024 per household avg. 2009 US EIA
- 97.5 quadrillion BTU's = ~2.85744293 × 10^13 kwh US EIA
- Electricity Generation takes 40.4 quadrillion BTUs, losing 25.22 of them in conversion, and another 1.04 of them in transmission. However power plants are still much more efficient than cars, about 33% on average and up [missing] to while gas car engines are around 15-23% (city-highway) efficient US EIA
- US EIA
- US DOE
- Electric vehicles are 59-62% efficient US DOE
- So the total efficiency of an electric vehicle, from plant to wheels is around 39%, and rising with better power plantsMathWe use about 51 million BTUs worth of gasoline (but not at 100% efficiency.
- US DOE
- US EIA
- US DOE
- Environment Victoria
- US DOE
- mapawatt.com
- Tufts U.
- Washington Post
- inhabitat.com
- nature.com
- US DOE
- Heating and cooling account for about 56% of the energy use in a typical home. Many homes are not constructed optimally for efficiency. Windows are too large in the north, and too small in the south and west where they can catch the optimal amount of from the sun and air. Older homes lack insulation or have little of it. Bad air seals and cracks can lose as much heat as open windows.
Energy Efficient Home topics list from Wikipedia:
In the practice of sustainable design, sustainable architecture, low-energy building, energy-efficient landscaping low-energy houses often use active solar and passive solar building design techniques and components to reduce their energy expenditure.
Passive solar design and landscape
Sustainable landscaping Sustainable landscape architecture Sustainable gardening Rainwater harvesting Water conservation
Lighting and electrical appliances
Energy-saving lighting Lighting Windows Energy conservation Alternative energy
Extras: Improvements to heating, cooling, ventilation and water heating
Absorption refrigerator Annualized geothermal solar Earth cooling tubes Geothermal heat pump Heat recovery ventilation Hot water heat recycling Passive cooling Renewable heat Seasonal thermal energy storage (STES) Solar air conditioning Solar hot water Solar devices
