Steam generator systems - thermal oil

Relying on nearly 30 years of experience within the general boiler industry, Aalborg CSP A/S has developed a value-adding and innovative steam generator design that has a positive impact on levelised cost of energy (LCOE) .


Value-adding engineering design

The steam generators using thermal oil as heat transfer fluid (HTF) are all developed based on traditional boiler principles. They are therefore 100% welded Header-Coil type designed according to ASME and EN standards. This contributes to many operational benefits compared to the TEMA standard kettle- and shell & tube-type heat exchangers and has the potential to reduce LCOE by up to 5-10%.

  • Leakage-free design: By eliminating operational mistakes and risk for downtime, productivity and the general payback time of the plant is greatly improved. As a result of excellent performance track records, Aalborg CSP launched a 5-year guarantee against leakages for their thermal oil steam generation systems. 
  • Rapid ramp-up of 10 °C/min: The steam generation systems using thermal oil can allow a fast ramp-up every morning and at transient clouds. The rapid start ensures more than 30 minute extra energy production of a 9-hour daily operational time and increase daily revenue accordingly.

Constructability & easy installation

The general principle of constructability characterizes the design of our steam generators to minimize installation work on site and the economies associated with it. The thermal oil boiler systems are all developed to perfectly fit into the plant layout. They are prepared for direct mounting on site, and interconnection piping is also pre-fabricated to reduce the time spent on installation.

Fully optimized steam systems

Aalborg CSP places great emphasis on monitoring performance track records of its technologies in order to continuously optimise their effectiveness. Focusing on design excellence, the steam generators have undergone several optimisation practices since the first installation. The thermal oil steam generator system is the third, fully optimised edition of Aalborg CSP's steam generator technology and is characterised by increased efficiency and higher reliability.

Secured to be delivered

As a Danish company, Aalborg CSP A/S has the advantage of arranging loan guarantee through a Danish state owned export credit agency. The agency insures banks against the potential financial and political risks – thereby securing the loan and delivery of our thermal oil steam generation systems without financial obstacles.


Jens Taggart Pelle
Vice President of Technical Sales
Header-Coil heat exchangers /
CSP Power Plant technologies
Phone: +45 30 80 69 10