Combined Heat & Power

  • Home
  • About us
    • The company
    • The values we stand for
    • The team
  • Energy storage
  • Combined Heat & Power
  • Contact
Home ruttennes
FR EN

NES-Steam, a steam engine optimised for cogeneration

The NES-Steam, our latest innovation, offers significant advantages over traditional steam turbines, whose acquisition and maintenance costs often prove daunting for low- and medium-power installations. Aware of the constraints associated with these systems, our team has developed this steam engine specifically for cogeneration. The NES-Steam offers a solution perfectly suited to processes requiring high heat production and using steam as an energy carrier. The NES-Steam makes steam-based cogeneration easily accessible, even for smaller-scale installations.

An innovative solution

Both economical and robust, the NES-Steam converts the energy contained in saturated and pressurised steam into electrical energy. The expanded and partially condensed steam can then be used as a heat source for a specific industrial process, via a condenser acting as a heat exchanger.

Exploitation of saturated steam

In traditional steam turbines, it is crucial to limit condensation to prevent the risk of explosion. This is why superheated steam is generally used in such systems. 


One of the advantages of the NES-Steam is that it uses saturated steam with no significant loss of efficiency and no risk of explosion. This makes it possible to limit the temperature of the steam used, which represents considerable savings. In particular, it eliminates the need for a boiler superheater, simplifying the process and reducing associated costs.

No lubrication system

The high rotational speed of steam turbines requires a large and complex lubrication system, which necessitates meticulous and costly maintenance to keep performance at its peak.


In the case of the NES-Steam, rotational speeds are low enough to dispense with such a lubrication system. Moreover, the ingenious design of the steam engines does not require any type of lubrication, while guaranteeing long-lasting performance.

Low ancillary costs

Lengthy and frequent maintenance operations, installation of an explosion-proof building and losses of demineralised steam at the labyrinths are all additional costs that need to be taken into account in the economic calculation of a steam turbine.


The simple yet innovative design of the NES-Steam means that maintenance is greatly reduced. Furthermore, the fairing of the machine is sufficient to guarantee the safety of the entire system. Finally, the watertightness of the system ensures negligible steam losses in our solution. There are therefore very few additional costs associated with the installation of a NES-Steam.

3D model of the NES-Steam.50 prototype designed to deliver a power of 50 kW. 3D model of the NES-Steam.50 prototype designed to deliver a power of 50 kW.
Logo Rutten NES
Prototype of the NES-Steam.50 manufactured, assembled and connected to our steam boiler in our workshop in Herstal. Prototype of the NES-Steam.50 manufactured, assembled and connected to our steam boiler in our workshop in Herstal.
The prototype enables continuous improvement of the product through regular testing. The prototype enables continuous improvement of the product through regular testing.

Rutten - New Energy System S.A.

Parc industriel des Hauts-Sarts
1ère Avenue 123-125
B-4040 Herstal - Belgique

Phone +32 (0) 4 264 85 75

VAT BE0508.535.564

Rutten - New Energy System S.A.

Share on :
  • Logo Facebook
  • Logo Linkedin
  • Icone de mail
  • Share :
  • Icone de partage

Privacy policy

Website by Neodiensis

© 2025 - Rutten NES