UNICA CE Italy
UNICA CE Italy immersion heat exchanger UNICA CE Italy immersion heat exchanger UNICA CE Italy immersion heat exchanger UNICA CE Italy immersion heat exchanger UNICA CE Italy immersion heat exchanger

Immersion heat exchangers

Immersion heat exchangers are electric heaters installed on board of a pressurized cylindrical container. They are produced to satisfy the most diverse industrial applications in liquid fluid heating, such as water-based solutions and/or oily emulsions (different concentrations of water or oil).

This heater typology guarantees high-level performance and efficiency in temperature maintenance of large volumes of fluids in forced circulation; the heating elements composing the tube bundle can mainly have a twisted, eyelet or U shape. They are designed for horizontal and vertical installation, for both direct and indirect fluid heating.

Heat exchange is guaranteed by properly designed separators (diaphragms at 50% or 75%, or laser-cut separators) to take full advantage of the heat produced by the electric heaters with reduced load loss (expressed in mmH2O).

UNICA CE Italy designs heat exchangers with a length up to 3 m and a diameter up to 600 mm, with insulation available in spun glass or rockwool. Heat exchangers can be paired with an electric heater already possessed by the customer or with a custom-made heater from our production (sealed or ATEX execution).

Application fields: heating of fluids (water, oil, diathermic oil, glycol) in forced convection; cogeneration plants; indirect heating or preheating of process fluids inside stocking tanks in the petrochemical, chemical and pharmaceutical industry; heat treatment of food; steam production; plastics, shipbuilding and aerospace industry; water treatment and waste separation.

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Technical characteristics

Maximum length Up to 3 m
Maximum diameter Up to 600 mm
Tube bundle materials Carbon steel, AISI304, AISI321, AISI316L, Incoloy800, Incoloy825, Inconel
Insulation Spun glass or rockwool, any thickness and finish
Heating element shapes U-shaped, eyelet-shaped, twisted
Heat exchange separator type 50% or 75% diaphragms, or laser-cut spacer separators
Heater electrical execution Sealed or ATEX
Installation orientation Horizontal or vertical

Variants

  • Can be paired with a heater already owned by the customer
  • Can be paired with a custom UNICA CE Italy heater (sealed or ATEX execution)
  • Spun glass or rockwool insulation, any thickness and finish

Frequently asked questions

Yes, the immersed electric heater can be supplied in sealed or ATEX execution, for use in potentially explosive atmospheres in the chemical and petrochemical industry.
UNICA CE Italy manufactures custom-designed exchangers up to 3 metres long and 600 mm in diameter, with a tube bundle in carbon steel, AISI304, AISI321, AISI316L, Incoloy800, Incoloy825 or Inconel depending on the fluid and operating temperature.
Yes, the exchanger can be paired with a heater already owned by the customer, or with a heater custom-designed by UNICA CE Italy based on the process parameters.
Heat exchange is optimised through properly designed separators — 50% or 75% diaphragms, or laser-cut spacer separators — that make the most of the heat produced by the heaters with reduced load loss.
They are suitable for heating water, oil, diathermic oil and glycol, in both water-based and oily solutions, with horizontal or vertical installation, for direct or indirect heating.
Yes, spun glass or rockwool insulation is available, with thickness and finish chosen according to heat loss containment needs.