Commercial and Industrial Electric Heaters – are heavy duty heaters with thicker gauge steel grilles and heating elements. This type of heater is designed to operate under higher work loads for a longer period of time. For example a commercial electric ceiling heater located in a bank vestibule in the northern states is going to work non stop in the winter. This heater needs to heat this space even though the doors are going to be opening every few minutes. An industrial electric unit heater located in a warehouse by the overhead truck doors is going to be running non stop. Large crates bump into the heaters so it needs a heavy duty metal casing commercial & Industrial grade heaters can come in a large range
120 volts 1 phase
208 volts 1 phase or 3 Phase
240 volts 1 phase or 3 Phase
277 volts 1 phase
480 volts 1 phase or 3 Phase
600 volts 3 Phase
Electric heating From Wikipedia, the free encyclopedia
Electric heating is widely used in industry.
Advantages of electric heating methods over other forms include precision control of temperature and distribution of heat energy, combustion not used to develop heat, and the ability to attain temperatures not readily achievable with chemical combustion. Electric heat can be accurately applied at the precise point needed in a process, at high concentration of power per unit area or volume. Electric heating apparatus can be built in any required size and can be located anywhere within a plant. Electric heating processes are generally clean, quiet, and do not emit much byproduct heat to the surroundings. Electrical heating equipment has a high speed of response, lending it to rapid-cycling mass-production equipment.
The limitations and disadvantages of electric heating in industry include the higher cost of electrical energy compared to direct use of fuel, and the capital cost of both the electric heating apparatus itself and the infrastructure required to deliver large quantities of electrical energy to the point of use. This may be somewhat offset by efficiency gains in using less energy overall to achieve the same result.
Design of an industrial heating system starts with assessment of the temperature required, the amount of heat required, and the feasible modes of transferring heat energy. In addition to conduction, convection and radiation, electrical heating methods can use electric and magnetic fields to heat material.
Methods of electric heating include resistance heating, electric arc heating, induction heating, and dielectric heating. In some processes (for example, arc welding), electric current is directly applied to the workpiece. In other processes, heat is produced within the workpiece by induction or dielectric losses. As well, heat can be produced then transferred to the work by conduction, convection or radiation.