mrxalex319 asked:
Because its been getting cold these days I decided to buy a portable heater from walgreens. Now it does the job when its on the floor, heats room up in like 20 minutes. But then I thought to myself, I want to put it on top of my TV and so I did that but it takes longer!! I wonder why that is?
Because its been getting cold these days I decided to buy a portable heater from walgreens. Now it does the job when its on the floor, heats room up in like 20 minutes. But then I thought to myself, I want to put it on top of my TV and so I did that but it takes longer!! I wonder why that is?
January 10th, 2010 at 8:28 am
Because heat rises. So if it’s already half way to the ceiling, you’re not getting to enjoy the full amount of heat because its escaping.
January 11th, 2010 at 5:35 pm
My guess is that because heat rises when the source is at floor level it will heat the entire room from that level but when it is higher it is,in effect, only heating the room from the middle to thew ceiling leaving the lower half with no heat
January 13th, 2010 at 11:25 am
cause the warm air goes up if its on the floor its gonna heat the whole thing if its higher it will heat only half the room…which mean the top of the room…live it on the floor its better…
January 15th, 2010 at 12:02 am
Heat rises.So if you put the heater on the floor it will warm the room from the floor up. When it’s elevated the top of the room gets warm but the cold air on the floor does not.
January 17th, 2010 at 1:11 am
Well, I’m not sure I am right, but… Hot air tends to rise up, even in a room. If you will open a window on a cold day, you will feel the cold air at your feet first and more intense. So hot air goes up, cold air stays down.
If your heater is down on the floor, where the cooler air tends to accumulate, then the heater will be in more direct contact with it and the energy transfer will take place faster. In other words, the cool air will get heated while the hotter air above just stays there (disregarding other flow of air in your room). More energy is being released in your room this way and it heats up faster.
If the heater is somewhere up, it has nothing to heat but the already hot air, so the energy has to go from the heater to the hot air and then to the cool one lower, which takes more time, because of the smaller differences of temperature on the way.
Another idea might be that the heater also heats the floor, which heats the cool air.