How does a radiator warm up a room?

Answer 1

The filament in the radiator heats up on getting electricity.this heating is caused by vibrations of molecules of radiator.
these heated molecules emits infrared rays.These rays strike the air molecules in the room.On striking,the infrared rays cause the air molecules to heat up.and this increases the temperature of air inside room and we feel warmth !!!!!
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WNB-actually the processes of conduction,convection and radiation start after the process of transfer of heat to filament to air molecules.So it describes how heat is 'circulated' by air and not "How does a radiator warm up a room"

Answer 2

Actually it dissipates heat in all 3 of the usual ways - conduction, convection, and radiation. Mostly the last two - the rising heat causes a circular motion of air in the room - this is known as convection. The warm air rises, drawing cooler air in below, which itself is warmed and rises. The heat coming from the face of the radiator is 'radiating', You'll notice that you can't feel this heat as you move further away from the heat source, because of air's insulating properties.. it's actually pretty hard to move heat through a gas - you really need to move the gas itself!.. As for conduction, lean your back against the radiator and you'll see how that bit works :)

hth

christo

Answer 3

It heats the air above and in front of it. Hot air rises, and in order not to leave a vacuum, cold air fills the space... heats and rises... cold air fills it. Slowly the heat circulates into the whole room... got it?

Answer 4

water is heated by a boiler then pumped thru the radiators in the house.

Answer 5

sorry, dont know