Posted by jdemaris on November 03, 2010 at 05:52:00 from (67.142.130.30):
In Reply to: Re: heaters posted by Stuart on November 02, 2010 at 21:22:08:
I guess you do NOT believe in the scientific law of "Conservation of Energy." Or, the First law of Thermodynamics?
With a non-vented heater, all the "exhaust" is used to heat the room and is not lost via a vent or chimney. Does not matter if it's infrared, or not.
Depending on why someone is using it, you've got things backwards.
First of all - a heater is converting energy, from one state to another. Be it electric or propane, both are almost 100% efficient (if the propane is non-vented and no electric blower involved). If it IS vented,then efficiency goes way down. Note, I'm talking 100% efficiency only within this closed loop of existing fuel into heat, and am not figuring in how much energy is wasted making the electricity or propane.
Second - after that conversion is made, the way the heat travels is a factor - depending if you want an entire area generally warm, or wish to target certain areas. You cannot have a loss if all takes place within the room you are heating.
For somebody with a cold room who does not want to completely heat it up, infrared is more efficient since a few people can get warm next to it, without entire room heating. I.e., you are only using enough fuel to heat the people and nearby objects. Often you can run the heater at a lower setting and use less fuel per hour.
Both styles of heat are equally efficient for heating the entire room. There is no difference. The heat does not magically disappear at a higher rate with either mode of heat transfer.
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