Industrial heating elements are used in a wide variety of different applications in many industrial settings. Industries such as plastics, food, oil and gas and the chemical industry all use industrial heating elements to help with their various processes.
Here are five of the most common types of industrial heating elements and a bit of information about each of them:
- Immersion heaters: They are used in many different industries to heat up liquids in large vats, containers and tanks. Immersion heaters use the technique of direct heat transfer to heat up the liquid that increases the speed at which the liquids reach the desired temperature. They work well for liquids that have vastly different properties and usually require in terms of maintenance. Some of the common types of immersion heaters are, flanged heaters, circulation heaters, over the side heaters and screw plug heaters. Air heating elements are also part of this group of heaters.
- Pipe heaters: As the name suggests, these industrial heating elements are designed to fint inside small pipes to provide heat. They work well for any application that requires a low heat like making tar, molasses, wax or with more corrosive materials. The pipe heaters do not actually touch the item that they heat and the transfer of heat happens only indirectly. This transfer of heat happens through the pipe which is in turn being heated by the industrial heating elements attached on the outside to the pipe.
- Circulation heaters: These are a variety of immersion heaters which are sometimes even called ‘in-line’ heaters. Air blowers used at home are also sometimes referred to as circulation heaters though they only have a form of an immersion heater that is surrounded by air and so may be called as air heating elements. Their density is usually specially designed for the type of liquid that needs heating and things like viscosity and flow rate help determine their wattage and type of circulation heater to be used. They also have a drain valve feature that can be installed anywhere to enable quick and easy maintenance. They can be installed either horizontally or vertically depending upon their usage and application.
- Cartridge heaters: They are designed to heat up solids inside a mould or cavity and can reach very high temperatures. They come installed with a thermocouple that helps to control and maintain their temperature with a great degree of accuracy. They are used for hydraulic oil and motor oil applications, gearboxes, food equipment, laboratory equipment, water based applications and more. They sometimes have a lead wire connection to transfer the heat and different connections from the same industrial heating elements can be used to heat up different parts with varying temperatures as well.
- Electric heaters: The rising fuel costs over the past few decades saw the emergence of the electric immersion heaters. They are better for the environment and easily transfer heat immediately to the substrate. The electric heaters nowadays come in all of the above mentioned categories.