The process of convection sets up a current in which the hot air warmed by the radiator will rise as it becomes less dense due to it expanding. As it loses energy and cools down it becomes more dense and falls back down to be heated by the radiator again. Infrared heating systems will heat solid objects including the body, walls and furniture. When the body receives the infrared waves it can give a feeling of deep heat as the waves travel around an inch into the body.
When the waves hit an object, the waves are absorbed and then re-emitted, causing them to radiate heat towards you. Read more about the comparison between traditional heating and infrared here. Redheat is an ultra thin mat material that you can install underfloor such as under carpet, tiles or vinyl , under plaster, paint or wallpaper on walls or ceilings. The film contains a mixture of carbon crystal, graphite and graphene with copper strips down each side.
When plugged into a mains power supply via a suitable transformer, electricity is conducted through the copper strips which causes the chemicals in the middle to emit infrared waves. The rigid infrared panels or bulky standing heater alternatives available on the market would take up space in a room or on a wall, and particularly a small room or flat. Reducing the chance of mould and damp build-up is a major selling factor of infrared heating.
Not only will it improve the health of the occupants but also the health of the building by deterring damp; water can damage masonry causing it to rot, rust and causing mortar to crumble. Damp can also cause wallpaper to peel and paint to flake from the wall. Stains on walls also reduces the aesthetic of a room and can be hard to completely remove.
Home treatment of mould uses harsh chemicals which can affect the paint colour, meaning you may need to redecorate. Moisture also increases heat loss from the building, altering the insulating ability of the property. Infrared heating systems do have a warm up time like other heating systems, but this is comparatively quicker than conventional electric underfloor heating systems.
The time taken to warm the space will depend on what is above it. This is why it is important to ensure you use an approved Redheat installer. The installer will be able to assess the space and what the best way to install the product will be to ensure maximum efficiency.
Infrared heating is considered safer than traditional forms of space heating such as radiators. Redheat for example gets to around 35 degree heat at full capacity. Comparably, water through radiators is delivered at a temperature of 60 degrees or above. This is able to conduct through the metal of a radiator, whereas Redheat is not felt either as it can be underneath carpet or another building material.
These systems will heat the floor material to heat the room by convection. Far Infrared — unsurprisingly — the same band of infrared that the human body itself emits. All objects including people absorb and emit infrared and whether one is absorbing or emitting depends on the difference in temperatures between objects in an environment. If objects in an environment are warmer than you are, you will warm up from them.
If you are warmer than objects in an environment you will radiate out to them and feel cold. This Infrared emission is why police Infrared cameras can see fugitives trying to escape detection. An experiment at the John B. I mentioned that when a photon is absorbed, the molecule gains energy, well it can also emit a photon and lower its energy to another of its allowed vibrational quantum states.
This being said, the reason why IR light is produced and associated with heat is that you are seeing molecules go from one vibrational quantum state to a lower vibrational quantum state by giving off a photon of appropriate energy in the IR region.
Note that vibrational states are only really accessible at higher near room temp generally temperatures. All matter in bulk radiates approximately as a black body radiator , approximately because there are coefficients of emissivity depending on the constituents. For gases the functional form is different. The radiation has a specific spectrum and intensity that depends only on the temperature of the body. As the temperature decreases, the peak of the black-body radiation curve moves to lower intensities and longer wavelengths.
The black-body radiation graph is also compared with the classical model of Rayleigh and Jeans. Heat may be defined as energy in transit from a high temperature object to a lower temperature object. An object does not possess "heat"; the appropriate term for the microscopic energy in an object is internal energy.
The internal energy may be increased by transferring energy to the object from a higher temperature hotter object - this is properly called heating. The energy loss by a black body is given by the Stefan-Boltzman law. Thus the energy carried away by the infrared radiation reduces the heat content of the radiating body. This is the connection of infrared to heat. The microscopic interactions that give rise to the photons are explained in the other answers. This answer concerns the thermodynamic framework.
I think I understand your confusion. The answer would be: You've been misguided. There is no special link between heat and infrared radiation, except for the fact that most bodies radiate most of their heat in the infrared spectrum because they don't have enough energy heat to radiate at a higher frequency. See the graphs in this thread. So one could claim the same connection between X-rays and heat.
In fact, it would be even more so, since interactions with X-rays are even higher energy, except that there aren't that many things radiating x-rays around.
The easiest answer is that below 3, Kelvin in temperature, heat radiates EM often referred to as light by physicists although it is all EM not just visible light in the infrared.
Because most heat generates light in the infrared, scientists often refer to infrared light as heat. This is a generalized term or a convention.
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