Tuesday, April 24, 2012


           1.      Room Air Conditioners

1.      Consider using ceiling or table fans as the first line of defense against summer heat. Ceiling fans, for instance, cost about 30 paise an hour to operate, which is much less than air conditioners (Rs.10.00 per hour).
2.      You can reduce using the air-conditioner as much as 40 percent by shading your home's windows and walls. Planting trees and shrubs can help to keep the day's hottest sun off your house.
3.      Consider setting the thermostat of the air conditioner to 25°C (77°F) as it not only provides the most comfort at the least cost but also uses 3 to 5 percent less energy for each degree above 22°C (71.5°F).
4.      The use of a ceiling or room fan will allow you to set the thermostat higher because the air movement will cool the room.
5.      A good air conditioner will cool and dehumidify a room in about 30 minutes, so use a timer and leave the unit off for some time.
6.      Keep doors to air-conditioned rooms closed as often as possible.
7.      Clean the air-conditioner filter every month. A dirty air filter reduces airflow and may damage the unit. Clean filters enable the unit to cool down quickly and use less energy.
8.      If the room air conditioner is older and needs repair, it's likely to be very inefficient. It may work out cheaper on life cycle costing to buy a new energy-efficient air conditioner.
9.      Request your office or hotels to increase the AC temperature and earn social carbon credits.

2.      Refrigerators

1.      Make sure that refrigerator is kept away from all sources of heat, including direct sunlight, radiators and appliances such as the oven or cooking range. Seals can be checked by placing a lit flashlight inside the refrigerator and closing the door. If any light around the door is seen, the seals need to be replaced.
2.      Refrigerator motors and compressors generate heat; therefore, there should be enough space for continuous airflow around refrigerator. If the heat can't escape, the refrigerator's cooling system will work harder and use more energy.
3.      A full refrigerator is a fine thing, but be sure to allow adequate air circulation inside.
4.      Think about what you need before opening refrigerator door. You'll reduce the amount of time the door remains open.
5.      Allow hot and warm foods to cool and cover them before putting them in the refrigerator. Refrigerators will use less energy and condensation will be reduced.
6.      Make sure that refrigerator's rubber door seals are clean and tight, it should hold a slip of paper snugly. If the paper slips out easily then the door seal needs to be replaced.
7.      When dust builds up on refrigerator's condenser coils, the motor works harder and uses more electricity. Clean the coils regularly to make sure that air can circulate freely.
8.      Manual defrost refrigerators need to be defrosted regularly as the accumulation of ice reduces the cooling power by acting as an unwanted insulator.


3.      Computers

1.      Consider turning off your home or office equipment when not in use. A computer that runs 24 hours a day uses more power than an energy-efficient refrigerator.
2.      If your computer must be left on, consider turning off the monitor; this device alone uses more than half the system's energy.
3.      Setting computers, monitors, and copiers to use sleep-mode when not in use helps cut energy costs by approximately 40%.
4.      Battery chargers, such as those for laptops, cell phones, and digital cameras use power whenever they are plugged in and are very inefficient. Consider disconnecting the plug and save energy.
5.      Screen savers save computer screens, not energy. Start-ups and shutdowns do not use any extra energy, nor are they hard on your computer components. In fact, shutting computers down when you are finished using them actually reduces system wear and saves energy



4.      Microwave Ovens & Electric Kettles

1.      Microwaves save energy by reducing cooking times. In fact, one can save up to 50 percent on your cooking energy costs by using a microwave oven instead of a regular oven, especially for small quantities of food.
2.      Remember, microwaves cook food from the outside toward the center of the dish, so if you're cooking more than one item, place larger and thicker items on the outside.
3.      Use an electric kettle to heat water. It's more energy efficient than using an electric cook top element.
4.      When buying a new electric kettle, choose one that has an automatic shut-off button and a heat-resistant handle.
5.      It takes more energy to heat a dirty kettle. Regularly clean your electric kettle by combining boiling water and vinegar to remove mineral deposits.
6.      Don't overfill the kettle for just one drink. Heat only the amount of water you need.

visit www.greenyatra.org for more notes.

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