Industrial Heaters: Major Types, Applications, and Methods of Heat Transfer

Industrial Heaters: Major Types, Applications, and Methods of Heat Transfer

Heating is a significant part of the process in each and every industry. Whether it is for mixing two fluids or merging two substances or changing a substance from a strong to a fluid, the requirement for heat is there. Concerning manufacturing and assembling units, large-scale industrial heaters are required. Each industry needs a different style of working across plants and facilities. Here is a glance at the 4 fundamental industrial heaters equipped with high-quality Industrial heating elements.

Flanged Heaters

Flanged heaters are often utilized in the industries such as chemical, petroleum, and water treatment. These heaters generally come with an ANSI-rated flange, alongside other hairpin or cornet cylindrical components distending from the front of the rib. This is a kind of electric drenching heater that applies direct heat intensity to the fluid medium.

These heaters allow the adaptability of utilizing a wide range of compounds to assist with resisting corrosion and keep up with the lifespan of the flanged heating element. They generally use steel flanges for lubricants, heavy and light oils, and waxes as well as somewhat corrosive fluids and low-stream gas heating. We can likewise find steel flanges in immersion heaters for water tanks and a large number of other applications.

Circulation Heaters

Circulation or Inline heaters also make use of the flanged immersion framework. These industrial heaters are used to heat fluids that include:

  • Heavy fuels
  • Oils
  • Superheated water
  • Water-like fluids, and
  • Fuel oil.

The thermal heating of gases like hydrogen, methane, and nitrogen at the desired temperature is also carried out using these heaters. These sorts of industrial heaters incorporate a siphon that makes the fluid course through a closed reheated pipe circuit. At the point when the fluid enters the line, it helps create heat and afterward exits through the spout. Different materials require different wattages. Some of the major industries where these heaters find applications include:

  • Petrochemical
  • Thermal energy stations, and
  • The oil and gas industry.

Over-the-side Heaters

These industrial heaters have been extremely popular right from the very beginning because of their economic applications. These heaters come with a water-resistant body in a large number of shapes and sizes so that they can fit in the tank well. Regardless of the nature of the tank – standard or non-standard, these heaters can serve your purpose very well. These days, various top industrial heater manufacturers have got the capability of custom designing over-the-side scepter tank steam heaters to serve the heating purpose in any type of container. The unmatched flexibility and versatility of these heaters make them an ideal choice to work with different containers, regardless of the size. These are the ideal industrial heaters for budget-conscious units.

Screw Plug Heaters

Manufacturers belonging to diverse domains often use screw plug heaters for moderate-sized applications. These industrial heaters are a type of immersion heaters that are extremely popular for their unmatched versatility and ease of installation. Manufactured by the standard and oil immersion heater companies in India, these heaters are simple devices for warming up solutions in more modest holders that also call for controls. Screw plug heaters find applications in areas that include:

  • Chemical industry
  • Food and beverage industry, and
  • HVAC systems.

Some other typical applications include:

  • Water heating
  • Protection of fluid from freezing, and
  • Heating process air.

These heaters are available in a wide range of:

  • Operating voltages
  • Power ratings
  • Temperature ratings
  • Sheath materials, and
  • A large number of elements.

Methods of heat transfer in industrial heaters


Convective heat transfer happens when heat moves because of the movement of a liquid (like a fluid or gas). There are two essential types of convection - free convection and constrained convection. Free convection happens when the liquid normally streams because of heat gradients. For instance, hot air goes up, and cold air sinks, so normal convection depicts the propensity for hot air to move above cooled air. As the air is moving, a portion of the heat from the hot air moves to the cooler air. Constrained convection depicts circumstances where an outside force is utilized to speed up the progression of a liquid. Involving a fan or stirrer to make development in a fluid or gas would be an illustration of constrained convection.


Conductive heat transfer is the most widely recognized strategy for heat transfer for solids. At the point when a solid is treated with heat using a conductive robust heater, the minute molecules (or particles) that structure the solid begin getting hotter and thus start vibrating all the more quickly. The energy from the vibrations goes to adjoining iotas, which start to get sultrier also. Conductive heating is typically utilized on solids since they have a thick, rehashing sub-atomic construction.


Radiant heat transfer, in simple words, is the transfer of heat that makes use of electromagnetic waves. Objects at a temperature above outright zero emanate thermal energy because of the random motion in their particles. The thermal power is transmitted as electromagnetic waves, which proliferate from the object. The energy in these waves can then heat up encompassing objects, liquids, and gases. Some common instances of radiant heat incorporate the heat we get and feel from the Sun, and the heat broadly utilized to cook objects in a conventional oven.

Concluding Remarks

Theeta is one of the leading manufacturers and suppliers of high-quality tubular heating elements for domestic and industrial applications. The elements that the company sells represent the brand name Theeta. With more than 43 years of proven experience within the industry, the company is led by highly qualified engineers and allied professionals. The manufacturing facilities of the company are capable of handling huge volumes both for domestic and export markets. Some of the major customers for heating elements include Philips, Bajaj Electricals, Crompton Greaves, Usha, Sunflame, Venus, etc. The company has earned a formidable reputation for every product that it manufactures including oil immersion heater, cooking heater coil, industrial heating elements, and air heating elements. For more details, visit the website of company.


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