Whew! I don't know what he said but I am impressed! <smile>
Just joking. I really am impressed. I don't know how you can write such a grate and informative post, but, I am glad you can. At 08:54 PM 10/14/2006 -0400, you wrote: >I find the hype on this device a little hard to read. > >The temperature of a room or any space is a function of how fast and far the >molecules of air are moving. This takes a fixed amount of energy. The >structure of the building, the furniture and other contents of the space all >are made up of molecules which vibrate and the faster and further they move, >the hotter things will be. > >Now electricity moves through a conductor more or less at the speed of >light. When it meets resistance it gives off energy. Typically energy is >released as sound, various forms of electromagnetic radiation such as light, >heat, magnetism often used to perform movement. > >Heating with electricity is pretty efficient because the electricity can be >converted directly into various forms of heat. The electromagnetic radiation >can be pretty well at any point along the range from very long waves such as >long wave radio, up through short wave, UHF, VHF, Microwaves, the spectrum >of infrared into the light range and beyond ultraviolet through x-rays up >through gamma and alpha radiation. > >Water absorbs radio frequency radiation pretty well but it takes some >circuitry to produce that sort of energy. Short waves have been used for a >very long time for therapeutic heat and in the operating room for >cauterizing for example. Shorter radio waves in what is now known as the >microwave range are used to efficiently heat water in foods as in cooking >although that was not the original purpose, it was discovered in the '40s as >a side effect of radar radiation, it was not until the invention of the >magnetron tube by, I believe the British that it was possible to reliably >produce radio frequency wave lengths in that range. We could heat ourselves >fairly efficiently with microwaves if we were willing to sit in the directed >beam of a device but the room around us would not warm and there are other >risks. > >This brings us to the light radiation wave lengths. > >While we cannot see infrared light it is there. You can feel it coming off >your stove top when the elements are on. Infrared radiation will pass >through optically clear materials such as glass and air, well mostly it >will. It doesn't generate heat very much until it is absorbed by another >substance. Like light, it can be absorbed and it can be reflected. It is >mostly the infrared we feel in the sun, why we can feel heat through a glass >window while the window does not get warm. > >Some of you will be familiar with those radiant heaters which glow red and >when the reflector concentrates the light at you, you get warm even if >surrounding you is cool. > >For these to actually heat a room the infrared has to be absorbed by >something then that heat transferred to the air by convection or conduction. >Air, coming into contact with such a substance will become excited, the >molecules will jump about more and it warms up. > >So, an infrared heater may warm you up or parts of your room up, eventually >the entire room by shining on stuff and being absorbed causing the molecules >of that stuff, be it you or a table to begin jumping about and causing air >in contact with that stuff to get excited too. > >Inside a heater, the infrared bulbs radiate this low red light which is >absorbed by some or other material which in turn gets hot and excites air in >it's vicinity warming that air which will be moved or circulated either by >convection or with a fan to warm more air and so on. > >Now here is the thing! You can heat oil inside of a panel directly with an >element and as that panel heats up it will radiate some infrared and it will >warm up air touching it through conduction which will then rise and heat air >it contacts through convection. Either way, 1500 watts of electricity will >convert into a fixed amount of heat, some methods will be a little more >direct than others but the efficiency now is pretty well defined. > >You can put ten kilowatts into a brick and the brick will cool over some >period of time but that isn't free energy as it cools, you put in a lot of >energy to raise the temperature of that mass so it takes some time for that >energy to defuse. The same ten kilowatts applied more slowly over a longer >period of time will keep you as warm. > >Now there may be many reasons to purchase one particular type of electric >heater but these days the efficiency will be about the same just because >that is the limit of physics of it. It is the same reason why no one seems >to be able to get more energy out of a gallon of gasoline than chemistry put >there regardless of the stories of energy companies buying out the patents >of people inventing super carburetors. > >A heat pump might be more efficient in many circumstances because it >extracts heat from outside air even if that air is cooler than inside air >and has the other advantage that it can be reversed for cooling in summer >months but that requires a little more study. > >These are just a few thoughts to consider. I think we probably all would >like to save energy money. It can leave us vulnerable though to hype. > > >Dale Leavens, Cochrane Ontario Canada >[EMAIL PROTECTED] >Skype DaleLeavens >Come and meet Aurora, Nakita and Nanook at our polar bear habitat. > > >----- Original Message ----- >From: "Geno" <[EMAIL PROTECTED]> >To: <[email protected]> >Sent: Saturday, October 14, 2006 5:36 PM >Subject: [BlindHandyMan] Quartz Infrared Heaters > > > > Ralph, > > I would very much to know what you think of this unit. > > Though I use my sun-room for solar heat, the days there is no sun for the > > sun-room. I am thinking if the reports are good it would be a nice unit to > > have. > > So, I would be very interested in your model and it's performance. > > Geno > > Portland, ME. sent 5:36 PM EST > > > > > > > > > > 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 > > > > The Pod Cast address for the Cooking In The Dark Show is. > > http://www.gcast.com/u/cookingindark/main.xml > > > > Visit The New Blind Handy Man Files Page To Review Contributions From > > Various List Members At The Following Address: > > http://www.jaws-users.com/handyman/ > > Visit the new archives page at the following address > > http://www.mail-archive.com/[email protected]/ > > For a complete list of email commands pertaining to the Blind Handy Man > > list just send a blank message to: > > [EMAIL PROTECTED] > > Yahoo! Groups Links > > > > > > > > > > > > > > > > -- > > No virus found in this incoming message. > > Checked by AVG Free Edition. > > Version: 7.1.408 / Virus Database: 268.13.4/475 - Release Date: 13/10/2006 > > > > > > > >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 > >The Pod Cast address for the Cooking In The Dark Show is. >http://www.gcast.com/u/cookingindark/main.xml > >Visit The New Blind Handy Man Files Page To Review Contributions > From Various List Members At The Following Address: >http://www.jaws-users.com/handyman/ >Visit the new archives page at the following address >http://www.mail-archive.com/[email protected]/ >For a complete list of email commands pertaining to the Blind Handy >Man list just send a blank message to: >[EMAIL PROTECTED] >Yahoo! Groups Links > > > > > > > > >-- >No virus found in this incoming message. >Checked by AVG Free Edition. >Version: 7.1.394 / Virus Database: 268.13.4/476 - Release Date: 10/14/2006 > > > > >-- >No virus found in this incoming message. >Checked by AVG Anti-Virus. >Version: 7.1.394 / Virus Database: 268.13.4 - Release Date: 10/14/2006 Thanks. Kevin Doucet [EMAIL PROTECTED] confuse as says Blind man with unmarked forehead has large belly! -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.1.394 / Virus Database: 268.13.4 - Release Date: 10/14/2006 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 The Pod Cast address for the Cooking In The Dark Show is. http://www.gcast.com/u/cookingindark/main.xml Visit The New Blind Handy Man Files Page To Review Contributions From Various List Members At The Following Address: http://www.jaws-users.com/handyman/ Visit the new archives page at the following address http://www.mail-archive.com/[email protected]/ 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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