Page 50: of Maritime Reporter Magazine (November 2025)

ENERGY ONBOARD | WASTE HEAT

Image courtesy of Orcan Energy

WASTE HEAT

AN UNDERUTILIZED RESOURCE

Fuel-agnostic and suitable for newbuilds and retro? t,

Organic Rankine Cycle waste heat recovery systems are making headway as an energy-ef? ciency measure.

By Wendy Laursen arket prospects are looking so good for waste temperature heat (below 100°C), which can be captured by heat recovery systems that Orcan Energy re- Organic Rankine Cycle (ORC) waste heat recovery systems. cently expanded its industry relationships by These systems use organic ? uids to drive turbines that convert partnering with Goltens on installations. low-temperature thermal energy into electricity. This offers

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Andreas Sichert, CEO of Orcan Energy, a simpler and more compact solution that the steam turbines said: “Waste heat recovery is one of the most powerful and un- used in other waste heat recovery systems. derutilized tools for improving energy ef? ciency. In shipping Jonah van Sluijs, Marine Sales and Business Development alone, over 100 TWhth of waste heat could be harnessed.” Manager at Orcan Energy, says retro? ts are gaining momen-

This is equivalent to the power consumed by more than 6.3 tum and newbuilds are increasingly being designed with million people. waste heat recovery in mind. Standardized interfaces and re-

Over half of the energy from fuel consumed by ships’ com- served space at the shipyard level make integration simpler bustion engines is lost as waste heat via exhaust gases or from day one. cooling circuits such as jacket cooling, scavenge air, or lubri- He highlights some of the company’s recent technology de- cation oil. Around 50% of this waste heat is available as low- velopments: 50 Maritime Reporter & Engineering News • November 2025

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