About Rondane Teknologi AS

Experience into innovation

Rondane Teknologi AS is an innovative consulting company within LNG and ammonia solutions for the marine industry.

Its employee, Mr Jørn M. Jonas, has more than 30 years experience from the marine field, mostly within liquefied gas carriers and liquid gas fuel systems.


The present activity includes development and design of fuel and FSRU boil off (BOG) handling technology, LNG and ammonia fuel systems, commissioning/gassing-up, start-up of LNG fuel systems.

The latest innovation is a BOG liquefaction system based on cold heat recovery. Very low BOG condensation pressure enables the use of ejector for BOG suction from the tanks. The low pressure lift in the ejector gives high suction capacity ejector solutions.

Used on high pressure 2-stroke LNG or NH3 engine installations the system will give a unique simple and reliable BOG handling with all components located in the tank connection space (TCS). Additionally, the solution can be operated in a N2 separation mode where the condensate is subcooled and the N2 is separated from the fuel condensate. This is a particularly important feature for ammonia fuelled ships.

Used on FSRU the solution replaces the tradiditonal compressor based recondenser technology as a simple and reliable solution with a high capacity span.


                              Patent for the ejector BOG handling solution is granted