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Home Energy Seminary Save Money! Protect the Climate!

Home Energy Seminary Save Money! Protect the Climate!. Home Energy Seminary Introduction: Climate Change Home Energy: Lights Appliances: Fridges, Washing machines, AC A little Physics: Understanding your home! Building diagnostics Insulation vs. Air-tightness Windows Heating Systems.

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Home Energy Seminary Save Money! Protect the Climate!

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  1. Home Energy Seminary Save Money! Protect the Climate!

  2. Home Energy Seminary • Introduction: Climate Change • Home Energy: Lights • Appliances: • Fridges, Washing machines, AC • A little Physics: Understanding your home! • Building diagnostics • Insulation vs. Air-tightness • Windows • Heating Systems

  3. Cumulative CO2 Emissions from 1800-1988: The Ecological Debt of the North Graph by Martin Storksdiek

  4. “As the global climate changes, extreme weather events such as droughts, floods, heat waves, heavy rainfall, tropical storms and hurricanes are expected to increase.” (Dr. David Easterling, National Climatic Data Center, 9-26-00) Flooding of the Ohio river (NOAA Photo Library; www.photolib.noaa.gov)

  5. Temperature rise of 1 degree Celsius from the end of the twentieth century will leave up to 30 percent of species at risk of extinction. (IPCC, FAR) All pictures on this poster are from the NOAA Photo Library; www.photolib.noaa.gov

  6. Climate Change & Extreme Drought Severe drought as a result of global warming threatens to spread across half the Earth's land surface by 2100, turning one third of the planet into a desert. (Hadley Centre for Climate Prediction and Research, 2006) Drought Popenguine, Senegal (United Nations Photo Librarywww.un.org/av/photo)

  7. Climate Change & Equity Average Bangladeshi produces 0.2 tons of CO2 Average American produces 21 tons of CO2 Millions of Bangladeshi will loose their home and livelihood due to sea level rise.

  8. The Solutions to Climate Change can address many other problems: Energy SecurityNational SecurityJob SecurityLocal Air Pollution

  9. Efficiency An estimated 94% of materials become waste before a product is even manufactured. Only 6 per cent of materials extracted each year are embodied in durable goods!

  10. Home Energy Seminary Save Money! Protect the Climate! Americans spend more than $160 billion a year to heat, cool, light and live in our homes. Homes use about 21% of the energy we use as a nation. Homes contribute about 17% of our national emissions of greenhouse gases.

  11. Switch To Compact Fluorescent Light bulbs (CFLs)! More expensive upfront ($1-$12) but they'll save $30-$50! Many different types of CFLs available (including for small fixtures, 3-ways, etc). Last 10 times longer! Watch for available rebates.

  12. Compact fluorescent bulbs • Take 1-2 min to reach fullest brightness • Are less bright when it is cold • If you are concerned about brightness, buy a brighter one! • Should not flicker after 1-2 seconds

  13. Compact fluorescent bulbs • Are not all of equally good quality • Test out a brand before you invest in a lot of them

  14. Compact Fluorescent Bulbs: • Regular CFLs don’t work in dimmable fixtures • Buy a dimmable CFL • Check out www.efi.org for other specialty bulbs

  15. Compact fluorescent bulbs • Have a small amount of mercury: call your city about disposal. (But they still use less mercury than would have been produced at the power plant when you use a regular incandescent bulb)

  16. Compact fluorescent bulbFacts! If every household in the US replaced 5 fixtures with CFLs: Savings: 800 billion kWh The equivalent of shutting down 21 power plants.

  17. Energy Hog! Halogen Torchieres Nice light but… Uses 300W – 500W…. (a normal bulb uses 60W) Halogen torchieres are also a fire hazard! Buy a torchiere with CFL!

  18. Appliances: Energy Star: www.energystar.gov Look for the energy star label! More than 35 product categories are available with the ENERGY STAR label. Careful! Energy Star appliances are rated by size class. Look for the smallest appliance that fits your needs.

  19. Refrigerator If your refrigerator is more than 8 years old, it makes sense to replace it. The new one will pay for itself in energy savings in about 3-6 years. Again! Energy Star appliances are rated by size class. Look for the smallest refrigerator that fits your needs! Side-by-side are least efficient.

  20. Washing Machines BAD: Top-loader GOOD: Front-loader 40 to 60% less water 30 to 50% less energy 50 to 70% less detergent

  21. Front –loading Washing Machines Top-loader: 40 gallons of water per load. Front loader: 20 - 25 gallons. You could save as much as 7,000 gallons of water per year! Gentler on clothes. Decreases drying time considerably. Do a better job cleaning clothes. Be modern, get a front-loader! Top-loaders are the technology your grand-parents used!!! P.S. Only do full loads. Use cold water as often as possible.

  22. Conventional Dryer • 800-1000 kW/year • $80-$120/ year Be old-fashioned - dry your clothes like your grand-parents did! Tip: If you do not have time to hang all your clothes, hang the heavy, and thick items: towels, sheets, socks…

  23. Use Fans Instead of AC! Only 10-15% of the energy an AC uses. (Shut the fan off when you leave the room, because it does not actually cool the air but just move it. The exception to this is a window fan to get cool night air from the outside into the house.)

  24. Be cheap! Turn it off! Most electricity is used by things that are on a lot and use a lot of power: Refrigerator (500kWh-1300 kWh per year) Freezer (500kWh-1300 kWh per year) Desktop Computer (300-1000 kWh per year) Lights Don’t forget to turn your heat or AC off /down!

  25. Great Myths Turning off your computer will harm it. WRONG! This used to be true back when computers had green screens and punch cards……

  26. Great Myths Leaving your heat on is more efficient than turning it down because you need so much energy to heat the house back up. WRONG! Think about it! It’s as if you’d claim that putting down your suitcase while waiting for the bus uses more energy than holding it up the whole time, because you’d have to pick it up again.

  27. Get an Energy Audit A professional will be able to analyze your house and give you advise. You’ll get most out of it, if you are well educated! Prepare well and ask lot’s of questions!

  28. A Little Physics: How Heat Travels: Convection The flow of hot and cold gases This is how heat travels through leaks, cracks and gaps in your house.

  29. Will she be warm enough in the winter? Convection: Air leaks: This is why you wear a wind breaker over your woolen sweater!

  30. Blower-Door Test

  31. What You Can Do: Use weather stripping and caulking! It’s cheap, it works! Stay warm!Save Money!Protect the Climate! From the simple to the sophisticated, air sealing pays!

  32. Conduction Heat exchange between adjacent molecules This is how heat travels through materials. Some materials conduct heat better than others. Insulation slows the movement of heat.

  33. ConductionInsulation: This is why you wear a woolen sweater in winter and a cotton sweatshirt in the summer!

  34. Infra-redPhotography

  35. How Conduction is measured: Insulation is rated by: Resistance: R-ValueHigh R-value = high insulation properties You want: High R- Value Windows are rated by: Conductance: U-value Low U-value = high insulation properties You want: Low U- Value

  36. Two components to good weatherization: Minimize air leaks Optimize insulation

  37. How Your House Loses Heat

  38. Insulation (conduction):Get your walls and attic insulated! Insulating your walls and attic, along with addressing leaks around your doors and windows, can save as much as 30% on your heating bill. Insulate before you replace windows: it will cost you much less and save you more. Watch out for active knob-and-tube wiring before you insulate!

  39. Insulation materials Fiberglass

  40. Insulation materials Cellulose

  41. Fiberglass Vs. Cellulose

  42. Fiberglass vs. Cellulose • Fiberglass: like a woolen sweater • + easy to install • + can be cheaper • + moisture tolerant • - does not stop air flow • poor fire protection • most of the times poorly installed • Cellulose: like a down jacket • + stops air flow • + better fire protection • + can fill up nooks and crannies. • - does not tolerate moisture very well

  43. Slide by Paul Eldrenkamp @ Byggmeister

  44. Cellulose Installation This should be the very first home improvement you do! Pay back is 1-5 years Cost: $1000 - $5000

  45. Insulation Materials • Rigid foams Spray-foams Icynene; 2-part polyurethanes; Soy-based

  46. General Insulation Strategies Use an insulation that air-seals and insulates • Spray foam • Dense-pack (or wet-spray) cellulose When practical, insulate the outermost plane • Attic roof rather than floor joists • Crawlspace floor and walls rather than ceiling • Basement walls rather than ceiling Slide by Paul Eldrenkamp @ Byggmeister

  47. Radiation Electro-magnetic waves emitted from hot objects This is the how the sun heats the surface of the earth. This is why it can get very hot in a car in the summer.

  48. Window Replacement + New high-quality windows are definitively more energy-efficient and will cut your heating bills. + You’ll get rid of lead paint. + New windows are easier to operate and clean. - High-quality windows are expensive ($300-$600 per opening) - They have a very long pay back (30-50 years) - Esthetics

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