Hi Betsy It must have been because I got that from an Official Government Site, but the article was a little old. What I was after was a list of energy usage for appliances. Regards Ray---- Original Message ----- From: "Betsy Whitney, Dolphin Press" <[EMAIL PROTECTED]> To: <blindhandyman@yahoogroups.com> Sent: Saturday, January 19, 2008 6:16 PM Subject: Re: [BlindHandyMan] Estimating Appliance and Home Electronic Energy Use
Aloha Ray, I just have to ask. Is the rate in this email of 8.5 cents per kilowatt hour real somewhere? Our rate is $.32. It is $.20 in Honolulu. Betsy At 05:37 PM 1/18/2008, you wrote: >If you're trying to decide whether to invest in a more energy-efficient >appliance or you'd like to determine your electricity loads, you may want >to >estimate >appliance energy consumption. > >Formula for Estimating Energy Consumption > >You can use this formula to estimate an appliance's energy use: > >(Wattage × Hours Used Per Day ÷ 1000 = Daily Kilowatt-hour (kWh) >consumption > >(1 kilowatt (kW) = 1,000 Watts) > >Multiply this by the number of days you use the appliance during the year >for the annual consumption. You can then calculate the annual cost to run >an >appliance >by multiplying the kWh per year by your local utility's rate per kWh >consumed. > >Note: To estimate the number of hours that a refrigerator actually operates >at its maximum wattage, divide the total time the refrigerator is plugged >in >by three. Refrigerators, although turned "on" all the time, actually cycle >on and off as needed to maintain interior temperatures. > >Examples: > >Window fan: > >(200 Watts × 4 hours/day × 120 days/year) ÷ 1000 >= 96 kWh × 8.5 cents/kWh >= $8.16/year > >Personal Computer and Monitor: > >(120 + 150 Watts × 4 hours/day × 365 days/year) ÷ 1000 >= 394 kWh × 8.5 cents/kWh >= $33.51/year > >Wattage > >You can usually find the wattage of most appliances stamped on the bottom >or >back of the appliance, or on its nameplate. The wattage listed is the >maximum >power drawn by the appliance. Since many appliances have a range of >settings >(for example, the volume on a radio), the actual amount of power consumed >depends on the setting used at any one time. > >If the wattage is not listed on the appliance, you can still estimate it by >finding the current draw (in amperes) and multiplying that by the voltage >used >by the appliance. Most appliances in the United States use 120 volts. >Larger >appliances, such as clothes dryers and electric cooktops, use 240 volts. >The >amperes might be stamped on the unit in place of the wattage. If not, find >a >clamp-on ammeter-an electrician's tool that clamps around one of the two >wires >on the appliance-to measure the current flowing through it. You can obtain >this type of ammeter in stores that sell electrical and electronic >equipment. >Take a reading while the device is running; this is the actual amount of >current being used at that instant. > >When measuring the current drawn by a motor, note that the meter will show >about three times more current in the first second that the motor starts >than >when it is running smoothly. > >Many appliances continue to draw a small amount of power when they are >switched "off." These "phantom loads" occur in most appliances that use >electricity, >such as VCRs, televisions, stereos, computers, and kitchen appliances. Most >phantom loads will increase the appliance's energy consumption a few >watt-hours. >These loads can be avoided by unplugging the appliance or using a power >strip and using the switch on the power strip to cut all power to the >appliance. > >Typical Wattages of Various Appliances > >Here are some examples of the range of nameplate wattages for various >household appliances: >List of 24 items (contains 3 nested lists) >. Aquarium = 50-1210 Watts >. Clock radio = 10 >. Coffee maker = 900-1200 >. Clothes washer = 350-500 >. Clothes dryer = 1800-5000 >. Dishwasher = 1200-2400 (using the drying feature greatly increases energy >consumption) >. Dehumidifier = 785 >. Electric blanket- Single/Double = 60 / 100 >. Fans >List of 4 items nesting level 1 >. Ceiling = 65-175 >. Window = 55-250 >. Furnace = 750 >. Whole house = 240-750 >list end nesting level 1 >. Hair dryer = 1200-1875 >. Heater (portable) = 750-1500 >. Clothes iron = 1000-1800 >. Microwave oven = 750-1100 >. Personal computer >List of 3 items nesting level 1 >. CPU - awake / asleep = 120 / 30 or less >. Monitor - awake / asleep = 150 / 30 or less >. Laptop = 50 >list end nesting level 1 >. Radio (stereo) = 70-400 >. Refrigerator (frost-free, 16 cubic feet) = 725 >. Televisions (color) >List of 5 items nesting level 1 >. 19" = 65-110 >. 27" = 113 >. 36" = 133 >. 53"-61" Projection = 170 >. Flat screen = 120 >list end nesting level 1 >. Toaster = 800-1400 >. Toaster oven = 1225 >. VCR/DVD = 17-21 / 20-25 >. Vacuum cleaner = 1000-1440 >. Water heater (40 gallon) = 4500-5500 >. Water pump (deep well) = 250-1100 >. Water bed (with heater, no cover) = 120-380 >U.S. Department of Energy > > > >To listen to the show archives go to link > http://acbradio.org/handyman.html >or >ftp://ftp.acbradio.org/acbradio-archives/handyman/ > >The Pod Cast address for the Blind Handy Man Show is. >http://www.acbradio.org/news/xml/podcast.php?pgm=saturday > >Visit The Blind Handy Man Files Page To Review >Contributions From Various List Members At The Following address: >http://www.jaws-users.com/JAWS/handyman/ > >Visit the archives page at the following address >http://www.mail-archive.com/blindhandyman@yahoogroups.com/ > >If you would like to join the JAWS Users List, >then visit the following address for more information: >http://www.jaws-users.com/ >For a complete list of email commands pertaining >to the Blind Handy Man list just send a blank message to: >[EMAIL PROTECTED] >Yahoo! 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