This nitrogen expansion system (HP) can only be used in conjunction with a PED-approved expansion vessel designed to accommodate the expansion, for example, for a horizontal buffer tank or a geothermal expansion vessel. The nitrogen expansion system creates a “nitrogen cushion” at the top of the expansion vessel. The desiredpressure can be set to, for example, 1 bar, with higher pressures also possible.
It is necessary to provide nitrogen at the top of the thermal storage tank to prevent the water from absorbing air. In short, the nitrogen is intended to provide separationbetween the water and air.
The SOTEX nitrogen expansion system is an effective solution in applicationswhere conventional diaphragm-type expansion systems can no longer be used, for example, in systems with high medium temperatures (>120°C).
Systems
Nitromat Pro HP
The Sotex Nitromat Pro HP nitrogen expansion system generally consists of a Nitromat Pro nitrogen generator, a compressor, and a nitrogen storage tank. It is often supplemented with a PED-approved buffer tank where the expansion water is collected, topped with the nitrogen pressure from the Sotex nitrogen expansion system. With an operating pressure of 1 to 2 bar (optionally adjustable), this constitutes a pressurized system.
The Nitromat Pro HP series consists of highly reliable nitrogen generators, is energy-efficient, and delivers a purity of 99% nitrogen or more. The Nitromat Pro HP is the standard version in the product range, equipped with highly reliable components from global brands, effective compressed air treatment, an oil/water separator, and Siemens PLC control. The Sotex Nitromat Pro HP nitrogen generators are built in accordance with the European CE PED directive and are usually applied to PED-approved buffer tanks used as expansion containment. For example, in systems with high medium temperatures (> 120 °C), this is an ideal system compared to regular automatic expansion units.
An intelligent and user-friendly Siemens control system regulates the pressure of the nitrogen cushion in the heat storage tank and monitors the water content. This ensures optimal pressure regulation, safety, and protection for your heating system. All SOTEX Nitromat Pro nitrogen generators provide you with the desired information clearly displayed on a 7″ multi-color touchscreen. Naturally, we can also provide the desired information for application to your system via the Modbus TCP/IP communication module.
