Re:Dutch brewery burns iron as a clean, recyclable fuel
by jillesvangurp on Thursday November 05, 2020 @07:32AM
(#24997667)
I was talking about the whole journey. You don't get anywhere in this world in less than a few days/weeks with a big oil tanker.
Re:Dutch brewery burns iron as a clean, recyclable fuel
by nkurz on Thursday November 05, 2020 @08:20AM
(#24997970)
> A typical oil tanker consumes a couple of hundreds of tons of bunker fuel per day to move a couple of thousands of tons of fuel around.
While it certainly makes sense to calculate for the entire journey, if you were talking about the "whole journey" why did you specify "per day"? It's hard to blame 'ximeng' for relying on your written comment rather than what you intended to say. :)
This article suggests at top speed Panamax tankers carry 1.5-2mn gallons of fuel while burning 63,000 gallons per day (i.e. around 3-4% of capacity) at top speed.
That is considerably less than the 10% (200 tons to move 2,000 tons) that you suggest.
Also the article notes that reducing speed by 10% can reduce fuel use by a third. The tankers travel at 19mph, significantly less than their top speed of 23-28mph so fuel consumption is likely closer to 1%.