The process of producing heat by passing the electric current through a conductor or resistance is known as electric heating. It is of great importance and use in industries and houses.
Advantages of electric heating
There are the following advantages:
(a) Cleanliness. There is no dust, ash, fumes or smoke in electric heating so it makes the system clean.
(b) Economical. It is cheap than other types of heating because electricity is cheap, electric furnaces have low initial cost and maintenance cost, hence requires less attention and there is no necessity of storage of fuel.
(c) Response. It is quick to respond and heat can be Obtained easily and quickly.
(d) Ease to control. Quick, simple, accurate and reliable, temperature
control can be obtained very easily. Such temperature controlling is
not possible in other types of heating.
(e) Pollution. This heating do not spoil or pollute the atmosphere.
(J) Special heating. In certain cases heating to a particular portion or uniform heating or heating of non-conducting material, is required
which is only possible in Case of electric heating.
(g) Upper limit of temperature. There is no upper limit to the temperature obtainable except the ability of material to withstand the heat.
(h) Efficiency. The electric losses only a little losses therefore the efficiency is more and heating is efficient.
(i) Better working condition. It does not produce irritating noise, the radiation losses are less and the working on the furnace etc. is convenient and cool.
(j) Safety. it is quite safe.
