How do heating coil materials work

This is how electrical resistance heating works

There are two different types of electrical resistance heating: Electric direct heating and electric storage heating.

Direct electric heating

Resistance heating that works as direct electrical heating is also called direct current heating. you gives off the heat directly to the heated room. The advantage of these heaters is that theirs Installation quite cheap is. At least in comparison with the installation of central heating. However, their operation costs a lot. This is mainly due to the low energy efficiency that is inherent in them. Consumers should be skeptical of advertising promises made by manufacturers and providers who claim that the operating costs of their products and / or the latest generations of devices are significantly lower. The following heating systems belong to this type of resistance heating:

  • electrically heated radiators: These include both so-called Radiators as well as so-called convectors and electrically heated towel dryers. They are either permanently mounted, similar to the individual radiators in a central heating system, or, thanks to castors, they are mobile, i.e. they can be moved freely in the room.
  • Electric radiant heaters: This includes one, for example Infrared heating. The electric radiant heaters often have a rod insert, such as a filament in a tube made of quartz. The immersion heater becomes very hot when it is energized and most of the heat is emitted. You can feel it immediately after switching on the device, whereby the heat can only be felt where the heater radiates directly. The same applies to infrared lamps that work according to this principle.
  • mobile fan heaters: Lots of these right compact resistance heating devices heat the room air and circulate it. The downside: fan heaters literally stir up a lot of dust.
  • Electric underfloor heating: Resistance heating for the floor consists of so-called heating coils that were laid under the floor covering.

Electric storage heater

Resistance heating is then an electric storage heater or night storage heater, when it heats up its integrated heat storage system during so-called low-load timeswhich can then be called up at a later point in time as required. Compared to the variants of direct resistance heating described above, the electric storage heater has the The advantage that the storage tank was filled with "electricity heat", which is cheaper because of the low prices of electricity at night (so-called low tariff electricity). That saves energy costs. That's what this is for Installation of the night storage heating system, especially in the form of central heating, is more complex and correspondingly more expensive. Resistance heating of this type also leaves a lot to be desired in terms of energy efficiency, as there are high distribution and standby losses. An electric storage heater can be implemented as follows:

  • Centrally electrically heated heat accumulator: A centrally electrically heated heat accumulator, which contains, for example, a ceramic heating element that can get very hot, can be install like a conventional boiler in the basement. It transfers its heat directly to the connected components of the central heating system, including standard radiators.
  • Mini electric storage heaters: The Small electric storage heaters are set up where their heat is needed directly. However, since they only have a small amount of storage space, it can happen that the storage units also have to be topped up during the day at more expensive electricity tariffs because the heat supply from the night does not last the entire day. An undesirable side effect of this can be a fluctuating room temperature.

Electric heat pumps

Such resistance heating must be distinguished Heat pumps that work with the help of an electrically operated compressor. The heating is generated through the compression and expansion of a refrigerant with the addition of environmental energy. The In other words, electricity is not converted into heat via a resistor, but according to thermodynamics by exerting pressure on a gas.