Misplaced Pages

Energy conservation

Article snapshot taken from Wikipedia with creative commons attribution-sharealike license. Give it a read and then ask your questions in the chat. We can research this topic together.

This is an old revision of this page, as edited by Jonathan Kovaciny (talk | contribs) at 20:44, 22 August 2005 (Added more conservation tips. Some reorganization and corrections.). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Revision as of 20:44, 22 August 2005 by Jonathan Kovaciny (talk | contribs) (Added more conservation tips. Some reorganization and corrections.)(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff)
For the physical concept, see conservation of energy.

Energy conservation is the idealistic or economic practice of using energy resources in a sustainable way by considering which processes are wasteful, and addressing those inefficiencies. It is an important issue in manufacturing and other industries, primarily for reasons of cost-effectiveness. It can also be a useful strategy for addressing climate change. Consumers may also make attempts to conserve energy in order to reduce costs or promote responsible use of limited resources.

File:Gas burner on stove.JPG
Natural gas stoves are more energy-efficient than electric models.

As the clearly-finite quantities of non-renewable resources like coal, crude oil and natural gas are reduced and energy costs increase, the matter of conserving the remaining stocks until potential alternatives (such as fusion power or other alternative fuels) may be found viable will become more and more pressing. This can be addressed through decreased use of energy, or increased production by other means. The latter process does not consider other environmental consequences of increasing energy production.

Tips for consumers

General tips

Reduce heating costs

  • Operate your furnace efficiently:
    • Install a programmable thermostat and set it so your home will not be heated as much when you are away or asleep.
    • Replace your furnace's air filter every three months (more often if there is a lot of dust or pet dander in your home's air).
    • Follow the recommended maintenance schedule for your furnace.
    • Do not obstruct heating or air-return vents by placing furniture or other items in front or on top of them.
  • Insulate and weatherize your home effectively:
    • Ask your local utility to inspect your home to ensure that you have adequate insulation installed.
    • Seal off rooms that are not in regular use and close heating vents.
    • Carefully hold a smoking combustible material (such as an incense stick or cigarette) near the frames of exterior doors and windows. If the smoke moves toward or away from the window, an air leak is likely.
    • Replace old, leaky windows (especially single-pane glass) with newer windows.
    • Install heavy curtains over windows.
    • If you have basement windows that are never opened, consider replacing them with glass block, which is more insulative than a window. Keep at least two basement windows in place, however, so you can vent the basement if needed.
  • "Reuse" heat:
    • Leave hot water in the bathtub or in cooking pots instead of draining it immediately. This allows the water's stored heat to dissipate into your home rather than being lost down the drain.
    • If you have an electric dryer, vent it inside occasionally. The vented air will be very moist, so track humidity levels; if the humidity is high for extended periods you may encourage mold and mildew growth. UNDER NO CIRCUMSTANCES SHOULD YOU VENT GAS DRYERS INDOORS due to carbon monoxide present in the exhaust.
  • Use thick blankets or electric blankets so you can keep your home's air temperature lower at night.
  • Turn down the temperature on your water heater. The lowest setting on most modern water heaters in the United States is approximately 110°F to 120°F.
  • Replace your water heater with a tankless water heater, which heats water on demand rather than storing heated water.
  • Wear several layers of clothing.
  • If you live alone and/or in a large home, it may be more efficent to keep your overall house temperature low (55 to 65°F) and use an electric space heater to heat the areas you use most often. For example, if you work from home, keep a heater near your desk.
  • Protect your home from cold winds using windbreaks or other energy-efficient landscaping methods.
  • Choosing a smaller home and eschewing unnecessarily high ceilings reduces the amount of space your heating system will have to heat.
  • Choose an apartment or condominium rather than a free-standing house. These dwellings share walls and therefore have fewer exterior walls.

Reduce cooling costs

  • Many of the steps you can take to reduce heating costs, such as insulating and sealing your home, will also reduce air conditioning costs.
  • Use fans instead of air conditioning.
  • Turn fans off when no one is directly in the air stream of the fan. Fans do not actually cool the air; they help your skin to evaporate water more quickly, which cools you.
  • If you have more than two window air conditioners, it is usually more energy-efficient to install a central air conditioner.
  • If you have a portable air conditioners, be sure that it is vented outside. If it is vented inside, you are actually heating your home.
  • In geographic areas where summer nighttime temperatures fall below 70 F, open windows and use window fans to pull cool outside air into your home. Depending on the layout of your home, it may be best to only open certain windows and position fans so outside air is pulled in on one side of the house and interior air is pushed out on the other side of the house. It may be a wise choice to install a whole-house fan, which pulls air through your home and pushes it out through your attic. Choosing a whole-house fan.
  • Install awnings over windows and close window blinds or curtains to keep direct sunlight out.
  • Plant trees near your home. Choose locations that will shade your house during the afternoon. Even trees not directly shading your home will reduce local air temperatures.
  • Drink plenty of fluids to help your body cool itself.

Reduce lighting costs

  • Take advantage of sunlight and leave lights off during the day. If possible, adjust your daily routine to align your waking hours with sunlit hours.
  • Use compact fluorescent light bulbs in place of conventional incandescent light bulbs. A CFL uses approximately one-fourth the wattage of an incandescent bulb producing a similar level of illumination, and they last 8,000 to 10,000 hours. The savings in electricity typically amounts to over $30 per replaced bulb. Replace your most-used bulbs first for maximum savings.
  • Install motion-detection switches or timers for outdoor lighting rather than leaving lights on all night.
  • Install dimmer switches for incandescent light fixtures so you can use less light when less is needed. Most CFLs and other fluorescent bulbs are not designed for use with a dimmer.
  • Replace incandescent night lights with LED or electroluminescent (Indiglo&TM;, Limelite&TM;, etc.) lights.
  • Don't use excessive holiday lighting.
  • Dust light bulbs occasionally (with the power off) to increase light levels.
  • Use limited, focused lighting when performing a task in a small area instead of lighting the entire room.
  • Choose light fixtures that require fewer bulbs, or unscrew some of the bulbs in existing fixtures.

Reduce water usage

  • Install water-saving showerheads, faucets, and toilets.
  • Fix leaky pipes and plumbing fixtures in your home's plumbing system. Toilet tank leaks are easily detected by adding a few drops of food coloring to the water reservoir. If the water in the toilet bowl becomes dyed, water is leaking from the tank and the valve should be repaired or replaced.
  • Lower the water level of your toilet's water reservoir. Be careful not to lower it to the point that it does not flush adequately. If your toilet's flush mechanism does not allow an easy way to lower the water level, place a brick or glass jar filled with water into the water tank, clear of the flush mechanism, to displace water.
  • Take showers instead of baths.
  • Take shorter showers.
  • Use the light cycle when using a dishwasher on dishes that aren't extremely dirty. Try the same when using a washing machine.
  • Install a water softener if your water is "hard".
  • Water outdoor plants early in the morning or late in the evening to reduce the amount of water lost to evaporation.
  • Use a public swimming pool instead of purchasing your own.

Reduce household waste

  • Do not purchase products with excessive or unnecessary packaging.
  • Purchase products in the largest size practical so as to reduce the product:packaging ratio. However, do not purchase products in larger quantities than you will actually use, and be aware that having a larger quantity on hand may cause you to use more of the product than you would have ordinarily used.
  • Use and reuse gift bags in place of gift wrap.
  • Bring your own bags or boxes along when shopping to carry your purchases home.
  • Put off purchases whenever possible. You will often find that you didn't really need the item.
  • Use rechargeable batteries instead of conventional batteries.

Reduce transportation fuel usage

  • Walk, bike, carpool, or use public transportation whenever possible.
  • If practical for your job, ask your employer to let you telecommute on occasion to save trips to the office. Or, if your work hours are flexible, consider working four 10-hour days a week instead of five eight-hour days, to save a commute each week.
  • Choose a home near your workplace if possible.
  • If possible, avoid driving during rush hour so you aren't wasting fuel in slow-moving traffic.
  • Spend some time planning your errands to reduce the number of trips needed.
  • When purchasing a vehicle, choose a smaller, lighter vehicle. You may be able to purchase a small vehicle and borrow or rent a truck or other large vehicle when needed. Keep in mind that smaller vehicles, especially motorcycles, carry higher risks of injury or death in crashes.
  • Drive conservatively:
    • Reduce your speed. The amount of fuel needed to push air out of your vehicle's path increases exponentially with increases in speed. As a result, fuel efficiency drops rapidly.
    • Accelerate slowly. Getting your vehicle "up to speed" quickly is hard on your vehicle and uses more fuel than a slow start. Also, braking softly farther from your intended stopping point will make your brakes last longer.
  • Keep your vehicle running efficiently:
    • Keep your tires inflated to the recommended tire pressure.
    • Change spark plugs when recommended by your owner's manual.
    • Check your air filter regularly; more frequently if you drive in dusty conditions. To check it, hold it up to the light: if you cannot see light through the filter, replace it.
    • Use regular-grade gasoline unless premium or mid-grade gasoline is specifically recommended by your owner's manual.

Reduce electricity usage

  • Turn off all electric appliances (lights, computers, televisions) when they are not in use. Computer printers and photocopiers are typically high energy users.
  • Set your computer to automatically shut off the monitor and switch to standby mode (if available) after a certain number of minutes of disuse. Choose a flat panel display instead of a conventional CRT.
  • Use products with the Energy Star logo (or similar). In particular, recycling and replacing old refrigerators with an Energy Star-approved one can save a few hundred kilowatt-hours a year. Replacing old refrigeration and air conditioning units (even if they are still functional) with more efficient ones is often an economically and ecologically sound decision.
  • Unplug appliances that will not be used for an extended period of time; many devices, especially consumer electronics, use a small amount of electricity even when they are switched off, due to indicator lights or listening for remote-control signals. Direct current converters, which are typically used to connect small consumer electronics devices to household power, lose a significant amount of energy as heat, even when the device is not plugged into the converter.
  • Set your furnace/AC fan to "auto" rather than "on" so it will not run when the furnace/AC unit itself is off. The fan uses a significant amount of electricity.
  • Your refrigerator is typically one of the biggest energy users in the home. Take special care to operate it efficiently:
    • Clean the condenser coils on your refrigerator to keep them operating efficiently.
    • Reduce the number of trips you make to the refrigerator/freezer and do not leave the door open unnecessarily.
    • Refrigerator/freezer configuration effects the unit's efficiency. Bottom-freezer models are generally most efficient. Top-freezers (the most common configuration) are reasonably efficient. Side-by-side models are relatively innefficient. Chest freezers are generally more efficient than conventional front-opening models.
    • Small refrigerators are often less efficient than larger models because they usually have less insulation or a less-efficient compressor.
    • Keep your refrigerator/freezer reasonably well stocked so that less cold air is lost when the door is opened.
    • Cover beverages and moist foods to keep the humidity level in the refrigerator lower. Dry air is easier to cool.
    • Keep your refrigerator's temperature above 36°F and below 42°F. Keep your freezer's temperature at about 0°F. A good gauge of freezer temperature is ice cream. If the ice cream is too soft, lower the temperature; if it is very hard and difficult to spoon, raise the temperature.
  • When cooking:
    • Turn off your electric oven or stove shortly before the end of the required cooking time; the heating element will still be hot enough to finish the cooking process.
    • Cover pots to reduce heat loss.
    • Do not heat a small pot on a large burner.
    • Microwave foods when possible. However, microwaving water or other beverages is less energy-efficient than heating it on a stove.
    • Thaw or partially thaw frozen food in the refrigerator prior to cooking.
    • Avoid opening the oven door unnecessarily. Instead, view the food through the door's window and use a timer to help you determine when the food will be fully cooked. Most foods are fully cooked when the fragrance of the food begins to fill the room from within the oven.

Other conservation tips

  • Rent or borrow items you will not use very often. This eliminates the significant amount of energy that goes into the manufacture of the item.
    • Check books out from your local library rather than purchasing your own copy. This saves the energy and wood needed to produce another book.
    • Purchase used items when possible.
    • Donate usable clothing and other items to charity rather than discarding them.
  • Use "disposable" items (such as paper and plastic dishware and cutlery, or disposable cameras) sparingly. Opt instead for the reusable version.
  • At public restrooms, use electric hand dryers (if available) instead of paper towels. The energy needed heat and blow air at your hands is far less than the energy needed to make and transport paper towels and haul waste away.
  • Use a digital camera in place of a conventional film camera and get prints of only the best photographs. Use a printing service rather than purchasing your own photo printer.
  • Use toilet paper, paper towels, and other products made of recycled materials.
  • Ask your local energy utility about credits or rebates given for the purchase of energy-efficient appliances.

See also

External links

Conservation tips:

Conservation organizations

Categories: