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Quotes - Engineering - SalesImmersion Tank Heating
Heat Transfer Inside the Vessel
An immersion assembly is a rack of Temp-Plate panels hung inside the vessel, with the medium circulating through them. Double embossed panels are usual, since both faces then contribute surface.
Where it is the right answer. When the process fluid cannot be pumped through an external exchanger, when design pressures and temperatures are high, when the environment is highly corrosive and a fully welded assembly is the only thing that survives, and when the tank needs low surface disturbance.
Natural convection sets the size. Most immersion duty has no forced circulation on the tank side, so heat moves by natural convection and the coefficient is low. Assemblies therefore carry a lot of surface for a modest duty. Where agitation exists, say so, because the assembly gets smaller.
Removal for cleaning. On product duty the assembly should be designed to lift out. That has to be decided at design stage so connections, supports and lifting points suit it.
Common FAQs
When the fluid cannot practically be pumped out and back. Viscous products, abrasive slurries, batch processes that must not be disturbed, and tanks where adding pumps and pipework is unwelcome all qualify.
It can be designed for it, and on food and product duty it should be. Raise it at design stage so the connections, supports and lifting arrangement are built for removal.
Considerably. An agitated tank transfers heat far better than a still one, and the assembly gets smaller accordingly. If the tank has an agitator, tell us its type and speed.
A fully welded assembly with no gaskets is a real advantage, because there is no elastomer to attack. Material selection then follows the fluid rather than the seal, and plating and pickling tanks are common applications.
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