Flange/ Immersion Heaters

More Information

Immersion Heaters
For Liquids and Gases

Immersion heaters are designed for direct contact with water, solvents, oils, process solutions and gases.

Immersion heaters are mounted sideways into the vessel, preferably close to the bottom. Since the elements are fully immersed, virtually 100% energy efficiency is achieved.

Special elements are available for heating of corrosive solutions, highly viscous oils, high pressure or hazardous areas.

Typically a number of U-shaped heating rods are welded to a threaded boss or a flange. The terminations are usually covered by a termination housing.

Design Criteria:

Medium: Oil, sugar based liquids (e.g. fruit juice) and other solutions may degrade if subjected to a high element temperature. This can also lead to carbon build-up on the element, hindering heat transfer and eventually causing element failure. For these liquids a low watts density is advisable.

Flammable substances: Fuels, oil and generally combustible substances must be heated with care. The element temperature and the operating temperature of the system must be maintained below the flashpoint to prevent fire or explosion. Ex-rated elements are therefore specially designed and equipped with a thermostat to limit element temperature. In addition, approved temperature- and pressure control equipment must be used.

Applications:

Heating of tanks
Heating of tanks

Heating for boilers
Heating for boilers

Ex - in line heaters
Ex - in line heaters
  • Hot water tanks
  • Electrically heated boilers (better control than with gas or coal burners)
  • Control of bulk oil temperature in lube oil reservoirs (improves lubrication)
  • For heavy weight oil (for better flow, easier pumping, increased combustion efficiency)
  • Industrial water tanks, vessels and process piping
  • Cleaning and rinsing tanks
  • Heat transfer systems
  • Circulation heating
  • Steam superheating
  • Heating of air or gas
 
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