Industrial heaters use different ways to heat the environment. The most widely used is using electricity to generate heat. Among other forms of heating, this type has its distinct advantages and disadvantages. Each of their designs was based on the assessment of temperature required, how much sustained heat is needed and the feasible ways of transferring heat energy.
Electric industrial heaters chief advantages were precise control of the temperature and circulation of heat energy; no combustion was needed to sustain heat, and the ability to achieve certain temperatures faster than any other means. Heat energy produced can be directed at a precise point in the industry as needed in the process, concentrating power in a small area.
The electrical heating apparatus can be placed anywhere in the plant where it is needed and can be built in any required size. Heating processes involved are commonly silent, clean, and produced no pollution in the surrounding environment. Thus, it was suitable for green industry plants.
Though having many advantages, the cost of electricity itself is the main limiting factor for using the electric heaters at most industry. Electrical energy has a higher cost compared to direct use of fuel. Aside from the capital cost of the apparatus itself and the infrastructure needed to distribute large quantities of energy in an area.
Electric heaters generate heat by resistance heating, induction heating, electric arc heating, and dielectric heating. As such, electric industrial heaters are feasible for use from low temperature to high temperature processes.
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