Classification society Lloyd’s Register (LR) recently released the Technical Report: NOx from marine diesel engines using biofuels document.
The technical update, which follows technical insights from the outcomes of early biofuel trials in marine diesel engines, consolidates client experience and industry feedback from sea trial findings on NOx emissions when using biofuels.
Summary of NOx emission findings
There are four key observations from the trials in which LR acted as an independent advisory body to assess the means of gathering data, carrying out analysis and supporting clients in the presentation of the final outcome of the trials to the flag administrations:
The general feedback from ships which have undertook onboard NOx measurements was that the process represented a substantial extra workload which is far removed from normal service.
The findings from such work are inevitably constrained by the realities of working with installed and in-service engines and their associated systems, together with the real-world difficulties of undertaking necessary measurements.
Therefore, many ships which initially seek to use biofuels to potentially reduce their greenhouse gas emissions are being restrained by the complexity of having to determine NOx emissions.
The following organisations have shared their insights:
Note: The Technical Report: NOx from marine diesel engines using biofuels document may be downloaded from this link: https://www.lr.org/en/resources/nox-from-marine-diesel-engines-using-biofuels/
Photo credit: Lloyd’s Register
Published: 5 April, 2022
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