The Thermoflu concept,
The fruit of lengthy experience in the application of electric fluid heating techniques, Thermoflu represents a genuine innovation in the heating of liquids and gases.
We have put all our experience and know-how into developing and perfecting this exclusive process.
- +A patented concept
The Thermoflu takes the form of a hollow cylinder which the fluid to be heated passes through.
The concept is based on a cast aluminium tubular component with a heating element embedded in it. This avoids all direct contact between the resistor and the fluid it heats, thereby eliminating any risk of corrosion and increasing its useful life.
The thermal energy is exchanged between the electrical resistance heating element and the fluid to be heated through a tubular heat exchange surface with fins on its inner periphery. The energy is dissipated as heat in the mass of aluminium and transferred by thermal conduction to the fins, and then to the fluid by convection.
- +A recognised innovation
The Thermoflu system has been tested and validated at the EDF research centre at Les Renardières and was the subject of an article in the EDF publication in the EDF Cahiers de l’Innovation.
This concept has been used in industry for over 15 years to the considerable satisfaction of our customers. We have over 2,000 units currently in use.
Two types of installation are possible
Mounting in a single-flow system :
Mounted between two flanges, the fluid flows directly through the Thermoflu module in one direction only, a blind tube closing off the central part in order to optimise the passage of the fluid through the heat exchanger fins.
Installation in a dual-flow system :
The Thermoflumodule is mounted between a solid flange and a special connection flange. The fluid is conveyed through a central tube to the other side of the exchanger and returned to the first side via the heat exchanger fins.
- +An innovative design for an autonomous module
The Thermoflu has the advantage of being able to operate autonomously thanks to its compact design which includes all the necessary components – thermostat, control, safety features and a pump on some versions.
- +A multi-form solution
The predetermined length of this exchanger combined with a wide range of accessories makes it a component that is easy to integrate, whatever the configuration of your installation.
The Thermoflu offers two unique features that allow it to overcome the major disadvantages of traditional heating systems using submersed heating elements: :
- +insusceptible to corrosion : longer useful life
The main reasons for immersion heater failures are due to the liquid reacting with the heating element. Excessively hard water is most often the cause of such failures: the high surface temperature of the heating element causes the minerals present in the water to precipitate and attach to the electric resistor sheath. The minerals gradually build up to form an insulating layer that causes theinternal temperature of the heating element to rise, further and further as the layer thickens until the point of rupture is reached.
With the Thermoflu, the heating element is embedded in a block of aluminium, which means it never comes into contact with the liquid. The thermal energy is exchanged between the electrical resistance heating element and the fluid to be heated through a tubular heat exchange surface equipped with fins. The energy is dissipated in the mass of aluminium and transferred by thermal conduction to the fins, and then to the fluid by convection. This principle enables us to increase the heat exchange surface and reduce the surface load and therefore to reduce the surface temperature in order to limit the mineral precipitation effect, thereby eliminating the main cause of failure in conventional immersion heaters.
- +precise temperature control to within +/- 1°C : particularly useful for thermosensitive fluids
As the temperature is controlled by a pocket tube placed in the flow of heated liquid at the heater outlet, it allows the temperature to be controlled with an accuracy of +/- 1°C, thereby eliminating any risk of burning the fluid, particularly when the fluid in question is oil.
It can easily be integrated in new or existing systems thanks to its main features:
- – 3 times more compact than an immersion heater of equivalentoutput.
- Modular, compact, robust system that is easy to install
- Multi-purpose: water, oil, coolant, and hydrocarbons
- Multi-position mounting
- Integrated thermal cut-out
- Extremely easy to dismantle and clean
The Thermoflu can easily and advantageously replace the submersed heating elements usually used to heat liquids, overcoming all the latters’ weak points.
- overall output
- number of modules
- exchange coefficient
- the different system temperatures
from 2400 to 10000 watts
- Service pressures
up to 20 bar
up to 300°C.
The range exists in four configurations :