Superheated water systems are defined as those closed heating systems in which, in the boiler, a temperature equal to or even higher than 110 degrees is reached.
These are devices that are used in district heating systems, or for the transport of heat in industrial plants, where it is necessary to avoid evaporation.
To achieve this goal, the water must remain liquid despite the very high temperature and therefore it is necessary to operate correctly on the system pressure.
Special safety valves are therefore used to avoid any risk deriving from overheating.
In a pressurized closed circuit system in which the superheated water circulates as a heat transfer fluid, the pressure must not exceed the permitted threshold value.
The company B.S. Impianti, which has been involved in the design and construction of industrial plant engineering for over 20 years, also boasts considerable experience in the sector of steam superheated water production, carrying out in-depth feasibility studies.
Characteristics of superheated water systems
The main objective of systems of this kind is to guarantee that at each of their points the heat transfer fluid remains in the liquid state, keeping the pressure within the reference range.
The system organization includes a hot water generator, expansion systems, protection devices, water circulation and treatment systems and user equipment.
In order for the system to work in the best conditions, it is essential that each component is kept in good condition and that there are no problems of wear or reduction in wall thickness.
To avoid any risk associated with excessive overheating, the generator must operate at calibrated pressure values controlled by the safety valves.
The expansion system, which serves to allow the modification of the water volume, works by maintaining the pressure within the limits of normal operation.
As is known, in a closed expansion system, pressurization depends on variable pressure values.
Uses of superheated water systems
Superheated water boilers are the evolution of normal boilers, and therefore represent the ideal solution for obtaining medium-high temperatures, whose overall efficiency is considered excellent.
Thanks to their flexible use that uses different fuels, such as gas, biogas, diesel or hydrogen, these systems offer high-level performance, adaptable to residential or industrial contexts.
There is no requirement for a minimum burner load, as no condensation forms inside the system.
Plants of this kind demonstrate all their power even with small-sized boilers, which can be used in series to optimize the production of hot water with relatively low consumption.