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Re: [hreg] CFL article

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  • John Miggins
    90% of the energy of incandescent bulbs goes towards heat production. 20% does not seem that high to me. John Miggins Harvest Solar & Wind Power renewable
    Message 1 of 7 , Aug 31, 2006
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      90% of the energy of incandescent bulbs goes towards heat production.  20% does not seem that high to me.
      John Miggins
      Harvest Solar & Wind Power
      "renewable solutions to everyday needs"
      Phone/Fax 918-743-2299
      Cell: 918-521-6223
      ----- Original Message -----
      Sent: Thursday, August 31, 2006 11:46 AM
      Subject: RE: [hreg] CFL article

      I wonder what the lighting vs. total energy used ratio is for an average home. If my electric bill is $200, does conventional lighting cost me $50 and my additional A/C expense due to heat from lighting equal $10? At first glance, this seems a bit high.

      From: hreg@yahoogroups. com [mailto: hreg@yahoogroups. com ] On Behalf Of Nan Hildreth
      Sent: Thursday, August 31, 2006 10:47 AM
      To: hreg@yahoogroups. com ; hreg@yahoogroups. com
      Subject: RE: [hreg] CFL article

      At 09:59 AM 8/31/2006, Jack Wagner (HSN) wrote:

      <snip> Walmart <snip> I may actually start shopping there again <snip>

      I think Home Depot has the best deal on bulbs.

      Since CFLs generate so much less heat, what effect will this have on our air conditioning bills for a typical home in Houston ?

      It seems incandescent lighting watts * 25%  = extra a/c load.  So if your lighting costs $80 then increased a/c load would be another $20.   "According to the Rocky Mountain Institute, lighting is responsible for about a fourth of the electricity consumed in the United States , of which 20 percent goes to extra air conditioning to remove unwanted heat given off by light bulbs. More than 90 percent of the energy consumed by a standard incandescent bulb is given off as heat, while only 10 percent is converted into light. That's a 10 percent efficiency of converting electricity to light. "   http://www.truthout .org/docs_ 2006/printer_ 082806R.shtml

      Let’s say a typical 2500 square foot home that has 8 to 10 lights on for an average of 6 to 8 hours. I know there are several folks with math/engineering backgrounds in this group – is there a way to calculate this and come up with a figure? Might it be significant in the range of $5 to $10 a month just due to less heat generated? Before we switched to CFLs, we noticed that small rooms in our house were warmer whenever we had a four-light fixture blazing. At any rate, any A/C savings would add fuel to the fire for the argument of making a change to CFLs.

      From: hreg@yahoogroups. com [ mailto:hreg@ yahoogroups. com] On Behalf Of Paul Archer
      Sent: Wednesday, August 30, 2006 7:33 PM
      To: Houston RE Group
      Subject: [hreg] CFL article

      CFLs (compact flourescent lightbulbs) are nothing new to this group, but
      here's a good article on them, and how Walmart is starting a campaign to
      sell 100 million bulbs:

      http://www.fastcomp any.com/subscr/ 108/open_ lightbulbs. html


      ------------ --------- --------- -------
      O give me a home,
      Where the buffalo roam,
      Where the deer and the antelope play,
      Where seldom is heard
      A discouraging word,
      'Cause what can an antelope say?
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      Nan Hildreth, Houston   713-842-6643  Nan.Hildreth@ riseup.net

      "... the essential conflict is between those who are prepared to imagine and create fundamental change and those who want to maintain a status quo which is more and more dangerous.   -   Robert Theobald, Turning the Century

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