0
Describe a convection in a room heated by a radiator?
KambrieVinsonfb1475
it hotter
Pearline Blick
Add your answer:
Earn +20 pts
A radiator heats a room by heating the air which circulates in convection currents?
Yeah you are right convection currents are movement of the air
Explain how convection could be used to heat a room with a hot radiator on one side of the room?
Hot air rises to the ceiling and as it cools on the far side of the ceiling it sinks back down to the floor on the opposite side of the room from the radiator. It will not evenly heat the room. To get the best comfort level, you need a ceiling fan to push the hot air to the floor. The hot radiator sets up convection currents that transfer thermal energy to the rest of the room and eventually heat the entire room. How do convection currents work? The hot radiator warms the air that is closest to the radiator. The warm air expands, becomes less dense and rises to the top of the room. When the air reaches the top of the room it is pushed sideways towards the far wall by the more recently warmed air rising from the radiator below. In this way warm air moves to the other side of the room. Once on the other side of the room the air drops down both because it has cooled a little and because the air behind it continues to push on it. The air then continues to circulate back to the radiator and repeat the process.
How is heat from the air surrounding the radiator transferred to the air in the rest of the room?
Heat gets into the room in two ways: convection and infrared radiation. The "fins" of a radiator heat the air molecules around it, causing them to expand. As the hot air expands, it rises, creating a vacuum behind it.
How does heat get from inside the boiler to the wall behind the radiator?
Conduction of heat energy from the source to the water in the boiler. A pump moves the hot water to the radiator.The heat radiates out from the radiator to the air, where convection then circulates it through the room.
How do convection radiators work?
Being designed to radiate (give out/emit etc) the thermal energy of the hot water inside them, a convection radiator will heat the air above itself. As the gas is heated it expands (thermal energy is "converted" to kinetic energy and hence the molecules move faster and hence expand), as the gas expands it's density decreases and so it rises above the cooler, denser gas surrounding it. As more gas is heated the gas will diffuse across the roof of the room and gradually cool. When the gas is initially heated it's original volume is filled by in-rushing cooler gas, this in turn is heated, eventually the original gas, which has recently cooled and descended, is heated once more thus forming a convection current. One of the problems with convection heating of any kind is the tendency for the central areas of large spaces to remain unheated, furthermore longer spaces may not be heated at the far end from the heat source as the gas cools and descends before travelling the length of the space.
How does a room with a hot radiator get hot?
The room heats by convection transfer into the air, aided by humidity produced when water is heated.
What 3 examples of convection?
convection currents an example is a heat radiator...it radiates heat which warms the air. the air rises as its heated and cooler air takes its place then being heated by the radiator...this continues until the room is heated and so is a pot is on a stove and the water is boiling and the cold water is at the top and it goes to the bottom
What is an example for convectioon?
Convection is the movement of molecules in fluids and gasses. An example of convection is a warm radiator. A radiator warms the air near it which causes this air to rise. This also sucks in cold air from near the floor, which also gets heated and rises. This causes a circulation within a room.
What kind of thermal transfer happens when hot air rises?
ConvectionI'll tell you all i know ;) convection is the heat transfer through atoms or molecules that move, so that's liquids or gases. It's difficult to see in gases, it just kind of, happens. If you turn a radiator is turned on and the room is full of cool air, the radiator in the middle will warm up the particles above it and as warm things rise these heated particles will rise, pushing the cool air towards the radiator to be heated too.Image: http://www.revisionworld.com/files/convection%20copy.jpg
A radiator heats a room by heating the air which circulates in convection currents?
Yeah you are right convection currents are movement of the air
What heat transfer processes change air temperature?
Convection is the heat transfer through atoms or molecules that move, so that's liquids or gases. If you turn a radiator is turned on and the room is full of cool air, the radiator in the middle will warm up the particles above it and as warm things rise these heated particles will rise, pushing the cool air towards the radiator to be heated too.
What are 3 examples of convections?
convection currents an example is a heat radiator...it radiates heat which warms the air. the air rises as its heated and cooler air takes its place then being heated by the radiator...this continues until the room is heated and so is a pot is on a stove and the water is boiling and the cold water is at the top and it goes to the bottom
What is the process of heat in air called?
ConvectionI'll tell you all i know ;) convection is the heat transfer through atoms or molecules that move, so that's liquids or gases. It's difficult to see in gases, it just kind of, happens. If you turn a radiator is turned on and the room is full of cool air, the radiator in the middle will warm up the particles above it and as warm things rise these heated particles will rise, pushing the cool air towards the radiator to be heated too.Image: http://www.revisionworld.com/files/convection%20copy.jpg
When warm air rises and cold air takes its place what is created?
A convection current is created because, for example, if you have a room with a radiator at the bottom then the radiator will heat the air closest to it at the bottom of the room. When the air is heated it expands which makes it less dense because the particles are further apart. This means that the hot air will then rise above the cool air which was above it, therefore meaning that the cold air has to sink in order to fill in the space below. This cycle then continuous: a convection current.
Would a gas room heater be convection conduction or raidiation?
it would emit heat in the form of radiation. It will also heat the air which will cause convection. However, these heated gasses will be vented out of the flue so as not to contaminate the air in the room.
How does thermal energy from a radiator reach the other side of the room?
Hot air from a radiator reaches the other side of a room by convection current. Convection current is when hot water/ air rises, hot water/ air cools, cool water/ air sinks, cool water/ air warms and then the cycle starts over.
An example of convection?
Hot Air Rising And Cooler Air Falling Is One Example Of Convection Which That Example Is Called Convection Currents. Example Two An old-fashioned radiator creates a convection cell in a room by emitting warm air at the top and drawing in cool air at the bottom.
