Heating a liquid by immersing an electrical resistor has several advantages:
- Very high thermal efficiency, with a conversion efficiency of almost 100% while radiation is minimal.
- Rapidly obtain the desired temperature, easy to regulate, and precise control.
- Simple maintenance.
- Low investment cost, low labor cost.
The immersion heaters, manufactured by Quartz Alliance are equipped with silica glass tubes, a 1.7 m rubber covered cable and a molded plug, all of which leads to the following advantages:
- Permeability to infrared radiation means an increased electrical power can dissipate in a reduced volume.
- The expansion coefficient is almost zero, therefore the tube is insensitive to variations in temperature, even strong ones.
- The high chemical inertness of silica means the immersion can be used to heat corrosive materials, (except hydrofluoric acid) such as those used for electroplating.
The radiating part of the immersion heater must always be completely submerged; so the level of the liquid must be frequently checked.
These advantages explain why it is interesting to use the immersion heater in electroplating (such as integrated circuits, stripping metals with acid, electrolyte deposits, gilding various mechanical parts and electronic components).
A differential of 30 milliamps must be used in case of short circuit.