Very well said Dale. I couldn't have said it better myself. The bottom line is, you can't get something for nothing.
Regards. Max. K 4 O D S. Email: [EMAIL PROTECTED] Transistor site http://www.funwithtransistors.net Vacuum tube site: http://www.funwithtubes.net Music site: http://www.maxsmusicplace.com To subscribe to the fun with tubes group send an email to, [EMAIL PROTECTED] ----- Original Message ----- From: "Dale Leavens" <[EMAIL PROTECTED]> To: <blindhandyman@yahoogroups.com> Sent: Saturday, October 14, 2006 7:54 PM Subject: Re: [BlindHandyMan] Quartz Infrared Heaters >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: <blindhandyman@yahoogroups.com> > 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/blindhandyman@yahoogroups.com/ >> 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/blindhandyman@yahoogroups.com/ > 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 > > > > > > 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/blindhandyman@yahoogroups.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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