The Importance of Accurate Energy Content Determination in Bio Bunker Fuels

One of the key changes in the 7th Edition of ISO 8217, issued last year, is the integration of drop-in biofuels from renewable sources into the marine fuel mix. Since biofuels have inherently lower calorific values than conventional marine fuels, their energy content varies based on the blend ratio.

The current ISO 8217 formula does not account for this variation, leading to an overestimation of energy content when FAME is present. To address this discrepancy, ISO 8217 recommends the ASTM D240 method for accurately determining the Net Specific Energy of biofuel blends (DF and RF grades).

Please find attached a bulletin which provides further information on this topic.

Download

Back